Climate change parameters such as increasing CO2 concentrations, rising temperatures, and shifting rainfall patterns can impact crop duration and productivity. Higher temperatures above optimum levels can reduce wheat, rice, and maize yields by 8-25% with each 1°C rise. Elevated CO2 can increase photosynthesis and yield for C3 crops like soybean but have less effect on C4 crops. Higher temperatures may shorten crop durations for wheat, rice, and maize according to studies from India and other countries. Rainfall changes can also significantly impact yields, as shown by a 70-90% increase in maize yields during wet years compared to dry years in one analysis.
Climate change and agriculture lecture by MUHAMMAD FAHAD ANSARI 12IEEM 14fahadansari131
This document discusses the impacts of climate change on agriculture. It begins by defining climate change and outlining some of the key drivers influencing agriculture, including population growth, urbanization, and globalization. It then examines how climate change is affecting global temperatures, greenhouse gas emissions, and precipitation patterns. The document outlines projections for increased global temperatures and impacts on agriculture in India like reduced wheat production. It discusses how different sectors contribute to climate change and strategies for agricultural adaptation.
CLIMATE CHANGE AND CROP WATER PRODUCTIVITY - IMPACT AND MITIGATIONDebjyoti Majumder
This document discusses the impacts of climate change on crop water productivity and mitigation strategies. It begins with definitions of climate change and the greenhouse effect. It then shows data on increasing greenhouse gas concentrations and rising global temperatures. Various impacts are described, such as effects on crop yields from increased temperature and CO2 levels. Strategies to improve water use efficiency and mitigate impacts are covered, such as mulching, land configuration, irrigation scheduling and precision land leveling. Overall, the document analyzes how climate change affects crop water productivity and different agricultural practices that can help address this.
Climate change and Agriculture: Impact Aadaptation and MitigationPragyaNaithani
Climate change refers to a statistically significant variation in either the mean state of the climate or in its Variability, persisting for an extended period (typically decades or longer). For the past some decades, the gaseous composition of earth’s atmosphere is undergoing a significant change, largely through increased emissions from energy, industry and agriculture sectors; widespread deforestation as well as fast changes in land use and land management practices. These anthropogenic activities are resulting in an increased emission of radiatively active gases, viz. carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O), popularly known as the ‘greenhouse gases’ (GHGs)
These GHGs trap the outgoing infrared radiations from the earth’s surface and thus raise the temperature of the atmosphere. The global mean annual temperature at the end of the 20th century, as a result of GHG accumulation in the atmosphere, has increased by 0.4–0.7 ºC above that recorded at the end of the 19th century. The past 50 years have shown an increasing trend in temperature @ 0.13 °C/decade, while the rise in temperature during the past one and half decades has been much higher. The Inter-Governmental Panel on Climate Change has projected the temperature increase to be between 1.1 °C and 6.4 °C by the end of the 21st Century (IPCC, 2007). The global warming is expected to lead to other regional and global changes in the climate-related parameters such as rainfall, soil moisture, and sea level. Snow cover is also reported to be gradually decreasing.
Therefore, concerted efforts are required for mitigation and adaptation to reduce the vulnerability of agriculture to the adverse impacts of climate change and making it more resilient.
The adaptive capacity of poor farmers is limited because of subsistence agriculture and low level of formal education. Therefore, simple, economically viable and culturally acceptable adaptation strategies have to be developed and implemented. Furthermore, the transfer of knowledge as well as access to social, economic, institutional, and technical resources need to be provided and integrated within the existing resources of farmers.
Economic perspectives on the impact of climate change on agricultureharrison manyumwa
The world's climate is changing, and the growing evidence is that the major drivers are anthropogenic, i.e. caused by humans. While humans are contributing to the changing climates the impacts of climate change on other humans range from minor to severe depending on the region one is located. As such, climate change has been viewed as a problem with a negative exernality. The diverse distributionl impacts have resulted in "winners" and "losers". But what is the way forward. I argue that "winners" should support and help the "losers" regain a normal life, by helping them to be resilient. Enjoy.
Global climate change is a change in the long-term weather patterns that characterize the regions of the world. The term "weather" refers to the short-term (daily) changes in temperature, wind, and/or precipitation of a region. In the long
run, the climatic change could affect agriculture in several ways such as quantity and quality of crops in terms of productivity, growth rates, photosynthesis and transpiration rates, moisture availability etc. Climate change is likely to directly impact food production across the globe. Increase in the mean seasonal
temperature can reduce the duration of many crops and hence reduce the yield. In areas where temperatures are already close to the physiological maxima for crops, warming will impact yields more immediately (IPCC, 2007). Drivers of climate
change through alterations in atmospheric composition can also influence food production directly by its impacts on plant physiology. The consequences of agriculture’s contribution to climate change, and of climate change’s negative impact on agriculture, are severe which is projected to have a great impact on food production and may threaten the food security and hence, require special agricultural measures to combat with.
Impact of climate change on agriculture & allied sectorsPradipa Chinnasamy
Climate change will significantly impact agriculture and food security in India. Rising temperatures, changing rainfall patterns, and more frequent extreme weather events will affect crop yields, livestock, and fisheries. Higher temperatures can reduce yields of major crops like rice, wheat and soybean. Pests, diseases and weeds will also spread to new areas, posing additional threats. Livestock will face heat stress and lower milk production. Fisheries may see increased catches but ocean acidification could damage shells of shellfish. To ensure food security, India needs strategies like switching crops, establishing food reserves, and developing climate-resilient varieties.
Impact and effect of climate change on agricultureDevegowda S R
1) A study analyzed the awareness and perceptions of 150 farmers in Bijapur, India on the impacts of climate change on agriculture. The results showed that 40% of farmers had high awareness of changes in precipitation patterns, while 58% had high awareness of temperature increases.
2) The majority of farmers perceived negative effects of climate change on soil fertility, crops grown, cropping patterns, use of chemical fertilizers, pest infestation, and grain yield. Nearly all farmers observed effects on timing of operations and increased pesticide use.
3) Regarding livestock, the vast majority (over 90%) of farmers perceived negative effects on the type and number of livestock reared as well as reduced milk yields from climate
Climate change and agriculture lecture by MUHAMMAD FAHAD ANSARI 12IEEM 14fahadansari131
This document discusses the impacts of climate change on agriculture. It begins by defining climate change and outlining some of the key drivers influencing agriculture, including population growth, urbanization, and globalization. It then examines how climate change is affecting global temperatures, greenhouse gas emissions, and precipitation patterns. The document outlines projections for increased global temperatures and impacts on agriculture in India like reduced wheat production. It discusses how different sectors contribute to climate change and strategies for agricultural adaptation.
CLIMATE CHANGE AND CROP WATER PRODUCTIVITY - IMPACT AND MITIGATIONDebjyoti Majumder
This document discusses the impacts of climate change on crop water productivity and mitigation strategies. It begins with definitions of climate change and the greenhouse effect. It then shows data on increasing greenhouse gas concentrations and rising global temperatures. Various impacts are described, such as effects on crop yields from increased temperature and CO2 levels. Strategies to improve water use efficiency and mitigate impacts are covered, such as mulching, land configuration, irrigation scheduling and precision land leveling. Overall, the document analyzes how climate change affects crop water productivity and different agricultural practices that can help address this.
Climate change and Agriculture: Impact Aadaptation and MitigationPragyaNaithani
Climate change refers to a statistically significant variation in either the mean state of the climate or in its Variability, persisting for an extended period (typically decades or longer). For the past some decades, the gaseous composition of earth’s atmosphere is undergoing a significant change, largely through increased emissions from energy, industry and agriculture sectors; widespread deforestation as well as fast changes in land use and land management practices. These anthropogenic activities are resulting in an increased emission of radiatively active gases, viz. carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O), popularly known as the ‘greenhouse gases’ (GHGs)
These GHGs trap the outgoing infrared radiations from the earth’s surface and thus raise the temperature of the atmosphere. The global mean annual temperature at the end of the 20th century, as a result of GHG accumulation in the atmosphere, has increased by 0.4–0.7 ºC above that recorded at the end of the 19th century. The past 50 years have shown an increasing trend in temperature @ 0.13 °C/decade, while the rise in temperature during the past one and half decades has been much higher. The Inter-Governmental Panel on Climate Change has projected the temperature increase to be between 1.1 °C and 6.4 °C by the end of the 21st Century (IPCC, 2007). The global warming is expected to lead to other regional and global changes in the climate-related parameters such as rainfall, soil moisture, and sea level. Snow cover is also reported to be gradually decreasing.
Therefore, concerted efforts are required for mitigation and adaptation to reduce the vulnerability of agriculture to the adverse impacts of climate change and making it more resilient.
The adaptive capacity of poor farmers is limited because of subsistence agriculture and low level of formal education. Therefore, simple, economically viable and culturally acceptable adaptation strategies have to be developed and implemented. Furthermore, the transfer of knowledge as well as access to social, economic, institutional, and technical resources need to be provided and integrated within the existing resources of farmers.
Economic perspectives on the impact of climate change on agricultureharrison manyumwa
The world's climate is changing, and the growing evidence is that the major drivers are anthropogenic, i.e. caused by humans. While humans are contributing to the changing climates the impacts of climate change on other humans range from minor to severe depending on the region one is located. As such, climate change has been viewed as a problem with a negative exernality. The diverse distributionl impacts have resulted in "winners" and "losers". But what is the way forward. I argue that "winners" should support and help the "losers" regain a normal life, by helping them to be resilient. Enjoy.
Global climate change is a change in the long-term weather patterns that characterize the regions of the world. The term "weather" refers to the short-term (daily) changes in temperature, wind, and/or precipitation of a region. In the long
run, the climatic change could affect agriculture in several ways such as quantity and quality of crops in terms of productivity, growth rates, photosynthesis and transpiration rates, moisture availability etc. Climate change is likely to directly impact food production across the globe. Increase in the mean seasonal
temperature can reduce the duration of many crops and hence reduce the yield. In areas where temperatures are already close to the physiological maxima for crops, warming will impact yields more immediately (IPCC, 2007). Drivers of climate
change through alterations in atmospheric composition can also influence food production directly by its impacts on plant physiology. The consequences of agriculture’s contribution to climate change, and of climate change’s negative impact on agriculture, are severe which is projected to have a great impact on food production and may threaten the food security and hence, require special agricultural measures to combat with.
Impact of climate change on agriculture & allied sectorsPradipa Chinnasamy
Climate change will significantly impact agriculture and food security in India. Rising temperatures, changing rainfall patterns, and more frequent extreme weather events will affect crop yields, livestock, and fisheries. Higher temperatures can reduce yields of major crops like rice, wheat and soybean. Pests, diseases and weeds will also spread to new areas, posing additional threats. Livestock will face heat stress and lower milk production. Fisheries may see increased catches but ocean acidification could damage shells of shellfish. To ensure food security, India needs strategies like switching crops, establishing food reserves, and developing climate-resilient varieties.
Impact and effect of climate change on agricultureDevegowda S R
1) A study analyzed the awareness and perceptions of 150 farmers in Bijapur, India on the impacts of climate change on agriculture. The results showed that 40% of farmers had high awareness of changes in precipitation patterns, while 58% had high awareness of temperature increases.
2) The majority of farmers perceived negative effects of climate change on soil fertility, crops grown, cropping patterns, use of chemical fertilizers, pest infestation, and grain yield. Nearly all farmers observed effects on timing of operations and increased pesticide use.
3) Regarding livestock, the vast majority (over 90%) of farmers perceived negative effects on the type and number of livestock reared as well as reduced milk yields from climate
Climate change poses serious threats to Indian agriculture that could undermine food security. Studies project cereal production may decrease 10-40% by 2100 due to increased temperatures, with wheat facing greater losses. Every 1°C rise in temperature could reduce wheat production by 4-5 million tons. Adaptation strategies like new crop varieties, water management, and insurance can help minimize impacts but require significant research and policy support. Immediate action is needed on low-cost adaptation options while determining costs and policies for long-term mitigation through practices like agroforestry and soil carbon sequestration. Failure to act risks substantial economic and social damages from climate impacts on India's agricultural sector and food system.
Climate change, its impact on agriculture and mitigation strategiesVasu Dev Meena
This document summarizes the impacts of climate change on agriculture in India and strategies to mitigate these impacts. It notes that agriculture is highly vulnerable to climate change due to factors like rainfall dependency and degradation of soils. Key impacts include reduced yields of crops like sorghum, maize and groundnut due to increased temperatures and changed rainfall patterns. Adaptation strategies discussed include using drought and heat tolerant crop varieties, conservation agriculture techniques like mulching, and watershed management.
Impact of climatic change on agricultureShashi Singh
Climate change is caused by both natural and human factors such as greenhouse gas emissions and fossil fuel burning. It is leading to rises in global temperature, changes in precipitation patterns, more extreme weather events. These changes are negatively impacting agriculture through reduced crop yields, shifts in suitable farming areas, and increased pest and disease pressures. While some factors like carbon dioxide fertilization may slightly increase yields, the overall impacts of climate change on global agriculture are expected to be severely damaging to food production and security.
This document summarizes Shantappa Duttarganvi's upcoming seminar on the impact of climate change on sustainable rice production and productivity. The seminar will cover an introduction to climate change and global warming, the impacts of climate change on rice including reduced yields from increased temperatures, and strategies for mitigation such as developing heat tolerant rice varieties and improved water management. The conclusion and future work sections will summarize the key points and outline plans for additional research.
Climate change is negatively impacting agriculture in India. Rising temperatures are shortening crop growing periods and reducing yields of wheat, rice, maize, and other crops. Higher temperatures combined with increased CO2 levels can decrease crop nutrition. Climate change is also worsening soil health, affecting livestock and fish production, and increasing pest and disease pressures. Projections indicate continued temperature rises and more extreme weather, posing severe threats to Indian agriculture and food security over the coming decades.
Climate change and its effect on field cropsNagarjun009
Climate change is causing rising global temperatures due to increased greenhouse gases. This is impacting field crops through higher temperatures and altered rainfall patterns. Studies project declines in yields of rice by 0.75 tons/hectare, and wheat, cotton, sorghum and groundnuts by 14-60% under climate change. Adaptation strategies like improved varieties and water management can reduce these impacts. Mitigation involves practices to reduce greenhouse emissions from agriculture through methods like efficient fertilizer use, rice cultivation techniques, and afforestation. Further research is needed to develop technologies that minimize agricultural greenhouse gas emissions.
CHALLENGES FACED BY FARMERS DUE TO ENVIRONMENTAL CHANGESEaseMyTrip.com
Climate change poses serious threats to global food production and agriculture. It affects agriculture through direct impacts on crop yields and indirect impacts like changing rainfall patterns. Farmers in developing countries are particularly vulnerable due to low coping abilities. In India, unpredictable monsoons and increased instances of unseasonal heavy rainfall and hailstorms have damaged crops and reduced yields. Soil quality is also degraded by climate change through impacts like increased temperatures, changing moisture levels, and erosion from extreme weather. The Indian government has launched insurance and irrigation schemes to provide relief to farmers and boost water conservation in response to climate impacts on agriculture.
Presentation by Mr. Eric Yao, co-ordinator of The Africa Centre, Dublin, and a farmer in Ghana, on the effects that a changing climate has had on his business.
Climate change effect on agricultural sectorAtif Nawaz
Climate change effect badly all kinds of species from last decade. and its going to very keen issue.
its a responsibility of all humanity to care about all issues regarding to climate change.
Economic impacts of climate change in the philippine agriculture sectorCIFOR-ICRAF
Presentation by Mark W. Rosegrant, Nicostrato Perez, Angga Pradesha, Timothy S. Thomas and Mercedita A. Sombilla at “Up and down the scales of time and place: Integrating global trends and local decisions to make the world more food-secure by 2050” Discussion Forum on the first day of the Global Landscapes Forum 2015, in Paris, France alongside COP21. For more information go to: www.landscapes.org.
The document discusses the impacts of climate change including increasing global temperatures, changes in precipitation patterns, and consequences for agriculture, forests, water resources, coastal areas, and human health. Key points mentioned are that temperatures could rise 1.4 to 5.8 degrees Celsius by 2100, precipitation trends have varied by region from 1900 to 2000, and climate change is exacerbating issues like water scarcity, declining crop yields, reduced forest health, and increased risk of diseases. Specific impacts discussed for India include changing rainfall patterns, more frequent droughts, and effects on rural livelihoods that depend on natural resources. Adaptation strategies proposed include changing cropping patterns, using resilient seeds, and diversifying livelihoods.
climate change now a days a big issue and weeds also in agriculture production system , climate change bring some positive and negative changes in the behavior of weeds.
This document discusses the effects of climate change on agriculture. It begins with an introduction on global warming and how increased greenhouse gases are causing temperatures to rise. It then looks at how climate change has historically affected agriculture, both positively and negatively. The document predicts that rising temperatures will reduce crop yields through heat stress and changing growing seasons. However, it also notes that some regions may experience increased yields. It concludes by considering policy options to help agriculture adapt to climate change, such as developing hardier crops and more sustainable water use.
Climate change impact and adaptation in wheatICARDA
8 May 2019. Cairo. ICARDA Workshop on Modeling Climate Change Impacts in Agriculture.
Climate change impact and adaptation in wheat. Presentation by by Prof. Senthold Asseng, Professor at the Agricultural and Biological Engineering Department of the University of Florida.
The Chinese Academy of Agricultural Sciences (CAAS) and the International Food Policy Research Institute (IFPRI) jointly hosted the International Conference on Climate Change and Food Security (ICCCFS) November 6-8, 2011 in Beijing, China. This conference provided a forum for leading international scientists and young researchers to present their latest research findings, exchange their research ideas, and share their experiences in the field of climate change and food security. The event included technical sessions, poster sessions, and social events. The conference results and recommendations were presented at the global climate talks in Durban, South Africa during an official side event on December 1.
THEME – 3 Wheat Improvement for the Changing Climate: Adaptation to Heat Stre...ICARDA
Climate change is increasing heat stress and reducing wheat yields. Breeding heat tolerant varieties and improving crop management can help wheat adapt. The document outlines strategies for wheat improvement under heat stress including broadening genetic diversity from wild relatives, evaluating germplasm across temperature gradients, identifying stress tolerant traits, and collaboratively selecting and sharing promising lines. Precision phenotyping platforms are proposed to improve data collection and sharing to support breeding for heat tolerance.
Climate change poses serious threats to Indian agriculture that could undermine food security. Studies project cereal production may decrease 10-40% by 2100 due to increased temperatures, with wheat facing greater losses. Every 1°C rise in temperature could reduce wheat production by 4-5 million tons. Adaptation strategies like new crop varieties, water management, and insurance can help minimize impacts but require significant research and policy support. Immediate action is needed on low-cost adaptation options while determining costs and policies for long-term mitigation through practices like agroforestry and soil carbon sequestration. Failure to act risks substantial economic and social damages from climate impacts on India's agricultural sector and food system.
Climate change, its impact on agriculture and mitigation strategiesVasu Dev Meena
This document summarizes the impacts of climate change on agriculture in India and strategies to mitigate these impacts. It notes that agriculture is highly vulnerable to climate change due to factors like rainfall dependency and degradation of soils. Key impacts include reduced yields of crops like sorghum, maize and groundnut due to increased temperatures and changed rainfall patterns. Adaptation strategies discussed include using drought and heat tolerant crop varieties, conservation agriculture techniques like mulching, and watershed management.
Impact of climatic change on agricultureShashi Singh
Climate change is caused by both natural and human factors such as greenhouse gas emissions and fossil fuel burning. It is leading to rises in global temperature, changes in precipitation patterns, more extreme weather events. These changes are negatively impacting agriculture through reduced crop yields, shifts in suitable farming areas, and increased pest and disease pressures. While some factors like carbon dioxide fertilization may slightly increase yields, the overall impacts of climate change on global agriculture are expected to be severely damaging to food production and security.
This document summarizes Shantappa Duttarganvi's upcoming seminar on the impact of climate change on sustainable rice production and productivity. The seminar will cover an introduction to climate change and global warming, the impacts of climate change on rice including reduced yields from increased temperatures, and strategies for mitigation such as developing heat tolerant rice varieties and improved water management. The conclusion and future work sections will summarize the key points and outline plans for additional research.
Climate change is negatively impacting agriculture in India. Rising temperatures are shortening crop growing periods and reducing yields of wheat, rice, maize, and other crops. Higher temperatures combined with increased CO2 levels can decrease crop nutrition. Climate change is also worsening soil health, affecting livestock and fish production, and increasing pest and disease pressures. Projections indicate continued temperature rises and more extreme weather, posing severe threats to Indian agriculture and food security over the coming decades.
Climate change and its effect on field cropsNagarjun009
Climate change is causing rising global temperatures due to increased greenhouse gases. This is impacting field crops through higher temperatures and altered rainfall patterns. Studies project declines in yields of rice by 0.75 tons/hectare, and wheat, cotton, sorghum and groundnuts by 14-60% under climate change. Adaptation strategies like improved varieties and water management can reduce these impacts. Mitigation involves practices to reduce greenhouse emissions from agriculture through methods like efficient fertilizer use, rice cultivation techniques, and afforestation. Further research is needed to develop technologies that minimize agricultural greenhouse gas emissions.
CHALLENGES FACED BY FARMERS DUE TO ENVIRONMENTAL CHANGESEaseMyTrip.com
Climate change poses serious threats to global food production and agriculture. It affects agriculture through direct impacts on crop yields and indirect impacts like changing rainfall patterns. Farmers in developing countries are particularly vulnerable due to low coping abilities. In India, unpredictable monsoons and increased instances of unseasonal heavy rainfall and hailstorms have damaged crops and reduced yields. Soil quality is also degraded by climate change through impacts like increased temperatures, changing moisture levels, and erosion from extreme weather. The Indian government has launched insurance and irrigation schemes to provide relief to farmers and boost water conservation in response to climate impacts on agriculture.
Presentation by Mr. Eric Yao, co-ordinator of The Africa Centre, Dublin, and a farmer in Ghana, on the effects that a changing climate has had on his business.
Climate change effect on agricultural sectorAtif Nawaz
Climate change effect badly all kinds of species from last decade. and its going to very keen issue.
its a responsibility of all humanity to care about all issues regarding to climate change.
Economic impacts of climate change in the philippine agriculture sectorCIFOR-ICRAF
Presentation by Mark W. Rosegrant, Nicostrato Perez, Angga Pradesha, Timothy S. Thomas and Mercedita A. Sombilla at “Up and down the scales of time and place: Integrating global trends and local decisions to make the world more food-secure by 2050” Discussion Forum on the first day of the Global Landscapes Forum 2015, in Paris, France alongside COP21. For more information go to: www.landscapes.org.
The document discusses the impacts of climate change including increasing global temperatures, changes in precipitation patterns, and consequences for agriculture, forests, water resources, coastal areas, and human health. Key points mentioned are that temperatures could rise 1.4 to 5.8 degrees Celsius by 2100, precipitation trends have varied by region from 1900 to 2000, and climate change is exacerbating issues like water scarcity, declining crop yields, reduced forest health, and increased risk of diseases. Specific impacts discussed for India include changing rainfall patterns, more frequent droughts, and effects on rural livelihoods that depend on natural resources. Adaptation strategies proposed include changing cropping patterns, using resilient seeds, and diversifying livelihoods.
climate change now a days a big issue and weeds also in agriculture production system , climate change bring some positive and negative changes in the behavior of weeds.
This document discusses the effects of climate change on agriculture. It begins with an introduction on global warming and how increased greenhouse gases are causing temperatures to rise. It then looks at how climate change has historically affected agriculture, both positively and negatively. The document predicts that rising temperatures will reduce crop yields through heat stress and changing growing seasons. However, it also notes that some regions may experience increased yields. It concludes by considering policy options to help agriculture adapt to climate change, such as developing hardier crops and more sustainable water use.
Climate change impact and adaptation in wheatICARDA
8 May 2019. Cairo. ICARDA Workshop on Modeling Climate Change Impacts in Agriculture.
Climate change impact and adaptation in wheat. Presentation by by Prof. Senthold Asseng, Professor at the Agricultural and Biological Engineering Department of the University of Florida.
The Chinese Academy of Agricultural Sciences (CAAS) and the International Food Policy Research Institute (IFPRI) jointly hosted the International Conference on Climate Change and Food Security (ICCCFS) November 6-8, 2011 in Beijing, China. This conference provided a forum for leading international scientists and young researchers to present their latest research findings, exchange their research ideas, and share their experiences in the field of climate change and food security. The event included technical sessions, poster sessions, and social events. The conference results and recommendations were presented at the global climate talks in Durban, South Africa during an official side event on December 1.
THEME – 3 Wheat Improvement for the Changing Climate: Adaptation to Heat Stre...ICARDA
Climate change is increasing heat stress and reducing wheat yields. Breeding heat tolerant varieties and improving crop management can help wheat adapt. The document outlines strategies for wheat improvement under heat stress including broadening genetic diversity from wild relatives, evaluating germplasm across temperature gradients, identifying stress tolerant traits, and collaboratively selecting and sharing promising lines. Precision phenotyping platforms are proposed to improve data collection and sharing to support breeding for heat tolerance.
This document discusses challenges to rice production from climate change and strategies for mitigation through plant breeding. It outlines various climate change stressors like increased temperatures, drought, flooding, and salinity that negatively impact rice yields. Plant breeding programs have developed stress-tolerant rice varieties that show yield advantages under abiotic stresses. For example, submergence-tolerant varieties have 1-3.5 ton/ha higher yields during floods. The document also discusses challenges like diseases, insects, and methane emissions from rice cultivation that breeding aims to address to help ensure food security under climate change.
Presentation delivered by Dr. Graham Farquhar (The Australian National University, Australia) at Borlaug Summit on Wheat for Food Security. March 25 - 28, 2014, Ciudad Obregon, Mexico.
http://www.borlaug100.org
Climate change impacts on agriculture in VietnamTingju Zhu
Climate change is already impacting Vietnam and will have serious consequences for its agriculture sector according to this report. The report summarizes that Vietnam is among the countries most vulnerable to climate change due to its location and long coastline. It finds that higher temperatures and changes in precipitation patterns are projected to reduce rice and crop yields. Additionally, sea level rise is expected to inundate over 400,000 hectares of land in the Mekong Delta and displace millions of tons of annual rice production by 2050. The report evaluates potential adaptation options for Vietnam's agriculture sector such as irrigation expansion, research and development, and shifting planting dates, but notes these may not fully address the threats from climate change.
Effect of high temperature on rice growth, yield & grain qualitySunil Kumar
Rice is an important global crop but climate change poses threats to rice production. High temperatures can reduce rice yields by damaging growth and development at different stages. Temperatures above 35°C can cause spikelet sterility by inhibiting pollen development and viability. While some heat tolerance exists between varieties, mitigation strategies are needed like using heat tolerant varieties, adjusting planting times, and agronomic practices to avoid peak stress periods and maintain yields under climate change.
impact of climate change in rainfed agricultureAnkush Singh
This document summarizes a master's seminar on the impact of climate change on rainfed agriculture. It discusses how climate change affects agricultural production through higher temperatures and changing precipitation patterns. Key impacts include reduced soil productivity, increased water demand and pest populations, and decreased crop yields. The document also outlines strategies for agricultural adaptation, including developing resistant crop varieties, improved water and land management, and crop diversification. Overall, the seminar evaluated how climate change threatens rainfed agriculture systems and policies needed to help farmers adapt.
The document discusses the threats of global warming on Indian farmers. It provides scientific evidence that greenhouse gas concentrations have increased significantly since the pre-industrial era due to human activities. India has experienced several extreme weather events in recent years, like floods and droughts, that have severely impacted agriculture. Global warming is expected to reduce crop yields through rising temperatures, changing rainfall patterns, and more frequent extreme events. The document outlines various impacts of climate change on agricultural resources and production in India. It presents case studies on crop damage from cyclones and strategies that can help mitigate the effects of global warming.
This document discusses the effects of global warming on agriculture production and adaptation strategies. It begins with an introduction to global warming, greenhouse gases, and the causes of global warming from both natural and human factors. It then examines the impacts of rising temperatures on crop yields for various crops in India. The document outlines some adaptation and mitigation strategies farmers can adopt, such as using drought-resistant crop varieties, conservation tillage practices, and crop diversification. It concludes that global warming poses risks to Indian agriculture but that proactive adaptation can help minimize negative impacts.
Kulbhooshan saini International Science Congress-2014kulbhooshan saini
This document discusses the impacts of climate change factors like temperature and rainfall on the production of sorghum and pearl millet crops in Alwar district, India. It analyzes crop production and climatic data from 2001-2010 and finds relationships between temperature, rainfall and crop productivity. Generally, higher temperatures reduced yields while higher rainfall enhanced production. The study aims to help assess climate change impacts and support adaptation strategies to sustain crop yields.
The document discusses the potential impacts of climate change on agriculture and agricultural biodiversity. It states that climate change is increasing global temperatures and altering precipitation patterns, which can negatively impact crop yields. Some crops may benefit from higher CO2 levels but increased heat and drought in certain regions are expected to reduce yields. The document also notes that climate change may alter competitive relationships between crops and weeds. Genetic resources will be important for developing new crop varieties that can adapt to changing conditions.
Role of conservation agriculture under climate change scenariojinendra birla
This document discusses the role of conservation agriculture in addressing climate change. It begins with background on climate change trends in India, such as increasing temperatures, changes in rainfall patterns, and effects on agriculture. Conservation agriculture is introduced as a way to adapt to and mitigate climate change impacts through practices like zero tillage, crop residue management, and moisture conservation. Specific management techniques under conservation agriculture are then reviewed, including their effects on crop yields, water use efficiency, economics and soil organic carbon. The document concludes that conservation agriculture can both help farmers adapt to climate changes while also reducing greenhouse gas emissions.
its ppt presented for climate smart agriculture at africa center of excellence and didn't published any where , the ppt useful fo every one working on climate modeling and metrologists as well as this document is important for the student working on climate change and wants to improve their educational knowledge
The presentation was part of the Food Security in India: the Interactions of Climate Change, Economics, Politics and Trade workshop, organized by IFPRI-CUTS on March 11 in New Delhi, India. The project seeks to explore a model for analyzing food security in India through the interactions of climate change, economics, politics and trade.
Drought stress Effects and Breeding StrategiesDr. Nimit Kumar
The document discusses the effects of drought stress on plants and breeding strategies to improve drought tolerance. It describes how drought stress reduces growth, photosynthesis, protein content, and nitrogen, phosphorus and potassium uptake in plants. Drought stress also decreases chlorophyll content, total soluble sugars and carbohydrates. The document outlines different strategies plants use to cope with drought, including drought escape, dehydration avoidance, and dehydration tolerance. It emphasizes that drought stress is a major abiotic stress that reduces crop yields worldwide and discusses approaches plant breeders use to develop drought tolerant crop varieties.
Impact of Climate Change on AgricultureDevegowda S R
Climate change is causing rising global temperatures and changes in precipitation patterns. This is impacting agriculture in India in several ways:
1) Cereal production is projected to decrease by 10-40% by 2100 due to rising temperatures, with wheat production decreasing by 4-5 million tons for every 1C rise in temperature.
2) Increased droughts and floods will make agricultural production more variable from year to year.
3) Rising sea levels could cause loss of land for agriculture and flooding in coastal areas.
CSA Symposium - Dr. Cicero Lallo - Day 2 Session 1BACDI/VOCA
The Potential for Developing an Heat Stress Early Warning System for Livestock in Jamaica- The Thermal Heat Index (THI) as a Response to Climate Change
By M. Maniruzzaman, J.C. Bisawas, M.A.I. Khan, G.W. Sarker, S.S. Haque, J.K. Biswas, M.H. Sarker, M.A. Rashid, N.U. Sekhar, A. Nemes, S. Xenarios, J. Deelstra
Revitalizing the Ganges Coastal Zone Conference
21-23 October 2014, Dhaka, Bangladesh
http://waterandfood.org/ganges-conference/
Climate change and its Impact on Insect Pestpushpaento
This document discusses the impacts of climate change on insect pests. It begins with an introduction to the topic and an overview of the presentation. It then discusses the causes and trends of climate change, including increasing carbon dioxide and temperature. It explains how these changes affect host plants and insects. Specifically, it provides examples of how elevated CO2 and temperature can increase insect consumption and development time while decreasing growth rates. The document also discusses the effects on insect-plant interactions and potential impacts on agriculture and insect pest management. In conclusion, the document analyzes in depth how climate change is altering the relationships between insects and their plant hosts.
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2. Effect of Climate Change
Parameters on Crop Duration and
Productivity
SANJU, H.R.
PALB 1173
3. o Introduction
• Climate change
• Parameters of climate change
o Climate change parameters on crop duration
o Climate change parameters on crop productivity
o Conclusion
o Future line of work
Sequence of presentation
4. 4
“Climate change refers to a statistically significant
variation in either the mean state of the climate or in its
variability, persisting for an extended period (typically
decades or longer)”
“Climate change refers to general shifts in
climate, including
temperature, precipitation, winds, and other
Factors”
CLIMATE CHANGE…
5. Two main causes for climate change
Natural Anthropogenic
• Natural fluctuations in
the intensity of solar
radiation
• Volcanic eruptions
• Short term cycles viz.
ENSO
•Burning of fossil fuel emits
CO2
•Methane emission from
agriculture, land fills and
industry
•Nitrous oxide emission from
agriculture and industrial
sector
•Release of CO2 due change in
land use and land cover.
6. Fig 1 : Major contribution of greenhouse gases to climatic
change over next 100 years based on 1990 global emission.
CO2
CH4
CFC
N2O
65%
CO217%
CH4
12%
CFC
8%
N2O
Aggarwal, et. al., (1993)
7.
8. 1.High CO2 in the atmosphere
2. Increase in Temperature
Maximum and minimum temperature
3.Variation in rainfall pattern
No. of rainy days/ shift in season
Amount and distribution
4.Solar radiation
Day length
5.Drought
6.Floods
Major Parameters of Climate change
9. Fig 2: Estimates of Future Levels of CO2
Year CO2, ppm
2000 369
2010-2015 388-398
2050/2060 463-623
2100 478-1099
IPCC, 2001
0
100
200
300
400
500
600
1950 1990 2025 2050
CO2 in ppm
10. Fig 3: Effect of rise in CO2 on C3 & C4 plants
•Photosynthesis increase (60-80%)
•Stomatal conductance decreases
•Transpiration reduces
•WUE increasers (70%)
11. Crop Leaf
photosynthesis
Grain yield Stomatal
conductance
Per cent change
Maize 3 4 -34
Rice 36 30 -31
Wheat 35 31 -38
Sorghum 9 0.8 -37
Cotton 33 44 -36
Groundnut 27 30 -28
Soybean 35 34 -40
USDA Hatfield et al.,2011
Table 1: Response of plant physiological variables to doubling of CO2
(660 ppm) concentrations
12. CO2
concentrati
on (ppm)
Leaves dry
wt
(g/plant)
No. of
seeds
Seeds
/plant
Seed wt
(g/plant)
280 3.30 27.7 55.1 9.25
330 5.09 36.3 84.3 14.86
660 5.43 50.2 106.7 17.85
USDA Allen et al., 1991
Table 2: Effect of CO2 levels on soybean growth
13. Crops
Pod/ seed yield (g/plant)
% yield increase350 µ mol mol-1 700 µ mol mol-1
Groundnut (C3) 9.06 13.29 46.7
Sorghum (C4) 25.78 27.37 6.2
U.K. Clifford et al., 1993
Table 3: Yield of groundnut and sorghum grown in controlled
environment (glass house) at ambient and enriched carbon dioxide
levels.
14. 0
5
10
15
20
25
Photosynthesis(umol/m2
/s)
Pusa Basm ati-1 Pusa 677 Pusa Basm ati-1 Pusa 677
Ambient Elevated
FACE OTC
0
5 0
1 0 0
1 5 0
2 0 0
2 5 0
3 0 0
3 5 0
4 0 0
4 5 0
Grainyield(g/m
2
)
P u s a Ba s m a t i- 1 P u s a 6 7 7 P u s a Ba s m a t i- 1 P u s a 6 7 7
Amb ie n t E le v ate d
Fig.4 :Effect of elevated CO2 on the grain yield and Photosynthesis in
rice cultivars under FACE and OTC Aggarwal et al., 2002
16. (IPCC 2007)
Fig 5 : changes in temperature, sea level and snow cover due to climate
change from 1850-2000
17. Fig 6: Temperature change from 1990-2100
IPCC., 2012
Increase average global surface temperature 1.8-4.0oC
18. Table 4: Expected changes in temperature and rainfall in India
Year Season Increase in
temperature (0C)
Change in rainfall
(%)
Lowest Highest Lowest Highest
2020s Rabi 1.08 1.54 -1.95 4.36
Kharif 0.87 1.12 1.81 5.10
2050s Rabi 2.54 3.18 -9.22 3.82
Kharif 1.81 2.37 7.18 10.52
2080s Rabi 4.14 6.31 -24.83 -4.50
Kharif 2.91 4.62 10.10 15.18
Lal et al., 2001
19. States Temperature
(oC)
Rainfall
MADHYA PRADESH varying trends Declining trend
GUJARATH 0.2-0.5 Varying trends
CHATTISGARH 1.0 Declining trends
MAHARASTHRA 1.0 More rains in May, June and July
KARNATAKA 0.5 Shift in peak rainfall month from
September to October. Lower rainfall
in July & Higher in August.
ORISSA 1.0 Frequent and intense cyclones and
delayed monsoon
ANDHRA PRADESH 1.0 Intense rainfall away from coasts
KERALA 0.8 Decline in June-July, marginal
increase in August-September
TAMIL NADU 1.0-1.5 Declining trend
Anon., 2008
Table 5: Temperature and rainfall trends over different states of India
20. Fig 7 : Rainfall shift in Eastern dry zone of Karnataka
Karnataka Rajegowda et al., 2008
21. AUGUST 27, 2008Anantapur district in
Andhra Pradesh received 110 mm rain fall in a single day ( average
rainfall in entire August is 89 mm) and destroyed entire groundnut.
June 28, 2008 Mahasamund district in Chattisgarh, received 183 mm rainfall
that day was more than the 150.5 mm rainfall usually received in the month of
June and it was followed by 16 days dry spell.
July 26, 2005 a record breaking 944 mm rainfall flooded Mumbai and
ruined farmers in adjoining Raigarh and Ratnagiri districts. Mumbai usually gets
600 mm rain over June and July. Paddy and Sugarcane on 90 thousand ha were
destroyed.
September 2, 2006 Barmer district of Rajasthan received 577 mm of rains
over 3 days. This was more than twice the average rainfall in a year. Farmers
lost crops worth Rs. 1, 300 Crores and 75, 000 farm animals.
RAIN SHOCKED INDIAN FARMERS
22. Crops Minimum (o C) Maximum(o C) Optimum (o C)
wheat 3-4.5 30-32 25
Barley 3-4.5 38-40 20
Oat 4-5 30 25
Maize 8-10 40-44 32-35
Sorghum 8-10 40 32-35
Rice 10-12 36-38 30-32
Tobacco 13-14 35 28
Table 6 : Cardinal temperature points for different crops
24. Table 7: Wheat crop response to variations in temperature
Temp
Change
(ºC)
Yield and yield attributes
Crop
duration
(Days)
Maximum
LAI
Grains
Per ear
Grain
yield
(q/ha)
Straw
yield
(t/ha)
+2.0 %
D
E
V
I
A
T
I
O
N
-7.7 -23.9 -4.1 -12.2 -21.6
+1.5 -5.6 -17.6 -3.0 -7.2 -17.7
+1.0 -3.5 -12.1 -0.3 -4.9 -11.5
+0.5 -0.7 -6.8 -0.2 -0.2 -6.0
Normal 143 3.8 24.12 50.43 8.83
-0.5 +3.5 +16.6 -1.0 +5.9 +10.9
-1.0 +6.3 +23.4 -1.7 +9.4 +15.2
-1.5 +7.7 +26.3 -0.4 +7.0 +20.5
-2.0 +11.2 +37.8 -1.7 +7.7 +27.1
Punjab Mavi et al. 1993
25. Table 8 : Change in temperature effect on Growing degree days in wheat
Turkey Anon., 2000
26. Table 9 : Change in maturity date under two climatic change scenarios
( +1ºC and +2ºC)
Turkey Anon., 2000
27. Fig 8 : Date of maturity and the expected wheat yields
under two climatic change scenarios ( +1ºC and +2ºC)
Turkey Anon., 2000
28. IARI, New Delhi Sinha and Swaminathan, 1991
Fig.9 : Effect of mean temperature on duration and yield of rice variety
IR 36 at different locations
29. Impact of climate change on maize duration and yield
T1 No climate change
T2 Uniform increase in maximum temperature alone by 10 C
T3 Uniform increase in minimum temperature alone by 10 C
T4 Uniform increase in both maximum and minimum temperature
by 10 C
T5 Increase in CO2 level alone to 450 ppm
T6 Increase in CO2 level alone to 450 ppm + Uniform increase in both
maximum and minimum temperature by 10 C
T7 Increase in precipitation by 10%
T8 Increase in CO2 level alone to 450 ppm + Uniform increase in both
maximum and minimum temperature by 10 C + Increase in
precipitation by 10%
T.N Geethalakshmi and Dheebakaran., 2008
30. Fig 10: Impact of Climate change on duration of Maize
T.N Geethalakshmi and Dheebakaran.,2008
Good year- 553.2mm Rainfall
Bad year - 117.7mm Rainfall
Normal year – 352.8 mm rainfall
31. Table 10 :Effect of climate change on maize yield
Climate
change
scenario
GOOD YEAR BAD YEAR NORMAL YEAR
Maize
yield
%deviati
on
Maize
yield
%deviati
on
Maize
yield
%deviati
on
T1 2132 0 267 0 601 0
T2 2265 6.2 236 -11.7 581 -3.2
T3 2189 2.7 290 8.6 673 12.1
T4 2192 2.8 254 -5.6 652 8.5
T5 2144 0.6 275 2.9 618 2.9
T6 2215 3.9 268 0.5 671 11.7
T7 2367 11.0 376 40.5 1026 70.8
T8 2528 18.6 359 34.3 1143 90.3
T.N Geethalakshmi and Dheebakaran., 2008
32. LOCATION Year Duration Days to
anthesis
Economic
yield kg/ha
COIMBATORE 2000 116 94 4876
2020 113 92 4403
2050 110 90 3652
2080 109 90 3361
MADHURAI 2000 114 92 5117
2020 111 89 4752
2050 107 87 4305
2080 106 86 3386
SALEM 2000 116 93 4592
2020 112 92 3850
2050 111 90 2997
2080 108 88 2764
Table 11: Impact of climate change on duration, days to anthesis and
economic yield of Rice in different locations
T.N. Srivani, et.al.,2007
33. Table 12: Rice crop response to variations in temperature
Temp
Change
(ºC)
%
D
E
V
I
A
T
I
O
N
Yield and yield attributes
Crop
duration
(Days)
Maximum
LAI
Grains
Per ear
Grain
yield
(q/ha)
Straw
yield
(t/ha)
+2.0 -3.3 -3.9 -12.4 -8.4 -6.4
+1.5 -2.6 -3.9 -8.3 -8.2 -1.7
+1.0 -2.0 -2.4 -6.1 -4.9 -1.2
+0.5 -1.3 -1.1 -2.4 -3.2 -0.7
Normal 153 6.2 494 61.4 4.94
-0.5 0.0 +0.2 +1.4 +3.0 +4.2
-1.0 +1.3 +0.5 +3.4 +2.7 +2.0
-1.5 +2.0 +1.1 +3.9 +4.6 +3.5
-2.0 +13.1 +13.6 +12.6 +21.7 +15.1
Ludiyana Mathauda et al., 2000
34. Fig. 11: Trends in maximum and minimum temperatures and radiation
from 1979 to 2003
Philippines Peng et al ., 2006
35. Fig.12 : The relationship between rice yield attributed and growing season
mean maximum temperature, minimum temperature
Philippines Peng et al ., 2006
36. Location year Grain
yield
(g/m2)
Percentage
of ripened
grain (%)
1000
grain
Dry
weight
Temperature
during GFP
( 0 C)
Masture 1999 599.2 77.9 19.1 26.9
MastureH 1999 411.5 55.4 18.5 28.1
Masture 2000 591.2 83.4 20.1 27.8
MastureH 2000 427.6 60.7 19.0 29.3
Akana 1999 668.9 87.5 20.6 23.1
Takatuki 2000 574.3 60.7 20.4 26.6
LSD
(0.05)
75.5 14.1 0.9
Table 13: Grain yield, yield components of rice cultivar Koshikari and mean
temperature during the grain-filling in different location
Japan Kobata and Uemuki, 2004
37. Crops Temperature rise
1oC 2 oC 3oC
per cent reduction in yield
Wheat 8.1 18.7 25.7
Rice 5.4 7.4 25.1
Maize 10.4 14.6 21.4
Groundnut 8.7 23.2 36.2
Ludiyana Hundal and Kaur, 1996
Table 14: Effect of increased temperature on productivity of crops in
Punjab
38. Table 15 : Response of simulated grain yield of irrigated wheat to changes in
temperature and CO2 in north India. (Aggarwal, et al., 2002).
39. Fig 13 :Impact of climate change on wheat yield in north India
• Grain yields of wheat decrease
by 17% with a 2o C increase in
temperature.
• Increase in CO2 to 550 ppm
nullify the effect of 2o C rise in
temperature.
Aggarwarl, et al., 2002
350
450
550
650
750
0 1 2 3 4 5
Increase in temperature, C
CO2,ppm
20%
10% 0%
-10%
-20%
-30%
-40%
2070
2010
Increase in temperature (o C)
IncreaseinCO2(ppm)
40. Parameter Control UV-B at 0.56 Wm-2
Plant height (cm) 71 48
Pod number/plant 120 85
Yield /plant (g) 24 19
Germany Giller, 1991
Table 16: UV- B radiations on soybean plant growth
and yield
41. Table 17: Effect of high temperature on productivity of
different crops
Wheat yield q/ha
Season 2001-02 2002-03 2003-04 2004-05
productivity 17.38 14.02 13.67 20.12
% decrease
over 2001-02
- -19.3 -21.3 +10.01
Rapeseed and Mustard yield kg/ha
productivity 884 540 360 470
% decrease
over 2001-02
- -38.9 -59.3 -8.24
H.P Rajendra prasad and Ranbir Rana ., 2006
42. Table 18: Temperature during March at Dhaulakuan and
Akrot
0
5
10
15
20
25
30
>28 >30 >32
2002
2003
2004
0
10
20
30
40
>28 >30 >32
2002
2003
2004
d
a
y
s
Temperature (ºC) Temperature (ºC)
H.P Rajendra prasad and Ranbir Rana ., 2006
43. Solar radiation (MJ m-
2 day-1)
Simulated grain yield
kg/ha
% change from base
yield (3837 kg/ha)
3 5387 40
2 5111 33
1 4523 18
-1 3156 -18
-2 2503 -35
-3 1903 -50
Anand, Gujarat Pandey et al., 2007
Table 19 : Simulated wheat yield due to effect of solar radiation
44. Fig: Cumulative Effect of Temperature and Solar Radiation on
Wheat Yield
Pakisthan Mukhta and Fayyaz-ul (2011)
45. Table 20: Effect of temperature during active tillering period on tiller
production
Planting
dates
Daily means of
temperature
(ºC)
Daily mean
Sunshine hours
Tiller production m-2
V1 V2 V3
13-07-1994 27.1 3.7 658 600 578
27-07-1994 25.8 4.3 533 484 480
13-08-1994 25.8 3.6 529 489 484
11-01-1995 24.1 10.4 471 453 489
25-01-1995 26.6 10.8 582 524 507
04-02-1995 27.4 10.4 658 609 573
10-07-1995 26.5 5.0 560 533 556
25-07-1995 27.4 6.0 689 649 550
12-08-1995 26.1 4.0 578 529 529
Hyderabad Lalitha et.al., 1999
46. Change in CO2 level , temp (ºC) and Solar
radiation (MJ m-2 day-1)
Simulated grain yield
kg/ha
% change from base
yield (3837 kg/ha)
440 ppm
3 4369 14
2 4699 22
1 4726 23
-1 4550 19
-2 4255 11
-3 3776 -2
660 ppm
3 5781 51
2 6332 65
1 6541 70
-1 6229 62
-2 5950 55
-3 5537 42
Table 21: Simulated wheat yield due interaction effect of temperature, solar
radiation and CO2 concentration
Anand, Gujarat Pandey et al., 2007
47. Table 22 : Change in Total Crop Duration due to Rise in Temperature
IARI Tripathy, et.al.,2010
48. Figure .14 : Yield Reduction in Different Cereal Crops with Temperature Rise
IARI Tripathy, et.al.,2010
49. IARI Tripathy et al.,2010
Fig. 15 . Changes in Grain Yield of Different Cereal Crops to Temperature
Changes and Doubled Atmospheric CO2Conditions
50. Table 23: Interactive effects of CO2 and temperature on yield
of maize and wheat
crop CO 2 ppm
Yield kg/ha
Existing Existing +3
ºC
% Deviation
(+3 ºC)
Maize 350 3700 2337 -36.8
700 4314 3713 -13.8
wheat 350 3916 3339 -14.7
700 6131 5206 -15.08
Punjab kaur et al., 2012
51. Fig 16: Annual rainfall of Karnataka state and
Tumkur district.
Panduranga et al., 2006Bangalore
52. Fig 17 : Productivity of various crops during the
period 1955 to 2000
Panduranga et al., 2006Bangalore
53. Table 24 : Impact of drought on productivity of pearl millet
Station
Pearl millet yield in kg ha-1
% Decrease in
yield
Good monsoon
year (1983)
Mean of 3
drought years
1984-1987
Barmer 285 65 77
Jalore 468 105 77
Jodhpur 337 79 77
Nagpur 721 265 63
Pali 553 248 55
Jodhpur Singh et al., 1999
54. • Rise in CO2 level from 280-660 ppm has increased the grain yield (50-70 g m-
2) of rice and seed weight (17.85 g plant-1) of soybean and about 46.7 per cent
pod yield of groundnut.
• Increase in temperature 2.0 0C over normal decreases the Crop duration
(3 & 7.7days), Grain yield (8.5& 12.2 q ha-1) in case of rice and wheat,
respectively and also increase in solar radiation from 1-3 MJ m-2 day-1 resulted
in increased yield of wheat from 18-40 %.
• Both maximum and minimum temperature has negative impact on yield , Grain
yield of rice declined by 10% for every 1ºC increase in minimum temperature
and decrease in wheat grain yield (21.3%), rapeseed pod yield (59.3%) at
maximum temperature in march.
• Increase in the yield of maize and wheat due to interaction effect of temperature
& CO2 was observed, but beneficial only at one unit increase in temperature and
radiation at all levels of CO2.
Conclusions
55. • Research needs to find out appropriate management practices
to sustain the present level yield in changed climate
conditions.
• Evolving efficient and soil management practices in addition
to identification or breeding of crops and varieties with higher
water use efficiency, dry matter conversion ratio, positive
response to temperature extremes and elevated CO2 .
Future line of work