Group Presentation in Climate change in Agriculture

1. SAM HIGGINBOTTOM UNIVERSITY OF AGRICULTURE, TECHNOLOGY
& SCIENCES NAINI, PRAYAGRAJ, UTTARPRADESH, 211007, INDIA.
Course: Agrometrology & Crop Weathering
Course Code: ENVS-716
GROUP PROJECT
Topic: Global Warming and Climate Change impact on agriculture and
environment and measures to reduce it.
PRESENTED TO PRESENTED BY
Ms. Shraddha Rawat Mutyalu Sheshu (20MSASSAC029)
Associate Professor Yogita Sharma (20MSASSAC032)
Department of Agrometrology
DEPARTMENT OF SOIL SCIENCE AND AGRICULTURE CHEMISTRY
NAINI AGRICULTURE INSTITUTE

2. What is Global Warming
Global warming is the long-
term heating of
Earth's climate system
observed since the pre-
industrial period (between
1850 and 1900) due to
human activities, primarily
fossil fuel burning, which
increases heat-trapping
greenhouse gas levels in
Earth's atmosphere

3. Global waring Effect on Agriculture
Climate change can affect
agriculture in a variety of ways.
Beyond a certain range of
temperatures, warming tends to
reduce yields because crops speed
through their develop- ment,
producing less grain in the process.
And higher tem- peratures also
interfere with the ability of plants to
get and use moisture.

5. What is Climate
Change
Climate change refers to a statistically variation in either the mean state of
the climate or on its variability, persisting for an extended period (typically
decades or longer).
Climate change may be due to natural internal processes or external factors
such as persistent changes to the atmosphere or changes in land use.
Article 1 of the United Nations Framework Convention on Climate change
defines “climate change” as “a change of climate which is attributed directly
or indirectly to human activity that alters the composition of the global
atmosphere and which in addition to natural climate variability observed over
comparable time periods”

6. Impact of Climate Change in Agriculture
• Agriculture is not only sensitive to climate change but also one of the
major drivers for climate change.
• The Climate sensitivity of agriculture is uncertain, there is a regional
variation in rainfall, temperature, crops and cropping systems, soils and
management practices
• The crop losses may increase if the predicated climate change increases
the climate variability
• The tropics are more dependent on agriculture as 75 percent of the world
population lives in tropics and two thirds of these peoples main
occupation is agriculture.
• With low levels of technology, wide range of pests, diseases and weeds,
land degradation, unequal land distribution

8. Major Projections of Climate Change
• The global average surface warming (surface air temperature change) will
increase by 1.1 to 6.4 C.
• The sea level will rise between 18 and 59 cm.
• It is very likely that hot extremes, heat waves and heavy precipitation events
will continue to become more frequent.
• It is very likely that there will be more precipitation at higher latitudes and it
is likely that there will be less precipitation in most subtropical land areas.
• It is likely that tropical cyclones will become more intense, with larger peak
wind speeds and heavier precipitation associated with ongoing increases of
tropical sea surface temperatures.

9. PROJECTED CHANGES
• Warmer Temperatures
• Drier of wetter
Conditions
• Increased Frequency in
Higher temperatures
• Enhanced atmospheric
CO2
• Changing Market
Conditions
Positive Impacts
Possibility of Growing
New Crops
Increased Productivity
from warmer temperature
Increased Productivity
from Enhanced CO2
Longer Growing Season
Accelerated Maturation
Areas
Decreased Moisture Stress
Negative Impacts
Increased Insect
infestations
Increased Moisture Stress
& droughts
Decreased Herbicides &
pesticide Efficiency
Crop damage from
Extreme Heat
Increased Soil Erosion
Planning Problems due to
less reliable forecasts
Increased Weed Growth &
disease outbreak
Projected Changes and
Positive and Negative impacts
of Climate change on Crops

10. Projected Impact in Asia
• Asia-Pacific region may experience the worst effect o rice
and wheat yield worldwide and decreased yields could
threaten the food security of 1.6 billion people in south
Asia
• The crop model indicates that in south Asia, average yields
in 2050 for crops will decline from 2000 levels by 50
percent for wheat. 17 percent for rice and about 6 percent
for maize because of climate change.
• In east Asia and the pacific, yields in 2050 for crops will
decline from 2000 levels by 20 percent for rice, 13 percent
for soybean, 16 percent for wheat and 4 percent for maize
because of climate change .
Potential Impact of Climate Change on
Wheat Production in India

14. THANKS