Agro ecology Concept

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Concept of Agro ecosystem
Difference between manipulated Agroecology and Natural Ecology
Sustainable Agriculture
Biodiversification and Agroecology
Sustainable Agroecosystems
Agroecology and the Design of Sustainable Agroecosystems

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Agro ecology Concept

  1. 1. AN APPROACH FOR SUSTAINABLE NATURAL RESOURSE MANAGEMENT
  2. 2. OutlineDefinitions Concept of Agro ecosystem Difference between manipulated Agroecology and Natural Ecology Sustainable Agriculture Biodiversification and Agroecology Sustainable Agroecosystems Agroecology and the Design of Sustainable Agroecosystems
  3. 3. Ecology The study of interactions between organisms and their environment. Agroecology It is the study of ecological processes that operate in agricultural production systems OR An ecological approach to agriculture that views agricultural areas as ecosystems and is concerned with the ecological impact of agricultural practices.
  4. 4. Ecosystem An ecosystem is a community of living organisms in combination with the nonliving components of their environment, interacting as a system. Components of an Ecosystem ABIOTIC COMPONENTS BIOTIC COMPONENTS Sunlight Primary producers Temperature Herbivores Precipitation Carnivores Water or moisture Omnivores Soil or water chemistry (e.g., P, NH4+) Detritivores etc. etc.
  5. 5. Biotic components of an ecosystem
  6. 6. Concept of Agroecosystem Agriculture + ecosystem = Agroecosystem Agroecosystem A spatially and functionally coherent unit of agricultural activity which includes the living and nonliving components involved in that unit as well as their interactions.
  7. 7. Concept of Agroecosystem Agroecosystems can be manipulated to improve production and to produce more sustainably, with fewer negative environmental or social impacts and fewer external inputs.
  8. 8. Difference between manipulated Agroecology and Natural Ecology Five ways difference: Monoculture Crops generally planted in rows Simplification of biodiversity (i.e. the degree of variation of life) Plough which exposes soil to erosion Use of genetically modified organisms and artificially selected crops
  9. 9. Semi-domesticated ecosystems that fall on a gradient between ecosystems that have experienced minimal human impact, and those under maximum human control. Examples - Integrated pest management aims to control problematic pests through introduction of other species, not application of pesticides or herbicides to kill that pest. Method of intercropping. Elimination of unsustainable practices such as increasingly intensified pesticide use.
  10. 10. SUSTAINABLE AGRICULTURE The efficient production of safe, high quality agricultural products, in a way that protects and improves: the natural environment the social and economic conditions of farmers their employees and local communities safeguards the health and welfare of all farmed species
  11. 11. SUSTAINABLE AGRICULTURE
  12. 12. SUSTAINABLE AGRICULTURE A whole-system approach to food, feed, and fiber production that balances environmental soundness, social equity, and economic viability among all sectors of the public, including international and intergenerational people.
  13. 13. Biodiversification And Agroecology Objective of Agroecology is to provide balanced environments, sustained yields, biologically mediated soil fertility and natural pest regulation through the design of diversified Agroecosystem and the use of low-input technologies. By designing farming systems that mimic nature, optimal use can be made of sunlight, soil nutrients and rainfall. The optimal behavior of Agroecosystems depends on the level of interactions between the various biotic and abiotic components and keeping synergies among them is the key word.
  14. 14. SUSTAINABLE AGROECOSYSTEMS Maintain theirnatural resources Rely on minimum artificial inputs from outside the farm system Manage pests and diseases through internal regulating mechanisms Recover from the disturbances caused by cultivation and harvest
  15. 15. Agroecology and the Design of Sustainable Agroecosystems Combining the different components of the farm system, i.e. plants, animals, soil, water, climate and people, so that they balance each other and have the greatest possible synergetic effects. Reducing the use of off-farm, external and non- renewable inputs. Relying mainly on resources within the agroecosystems by replacing external inputs . Improving the match between cropping patterns and the productive potential and environmental constraints of climate and landscape.
  16. 16. Agroecology provides the knowledge and methodology necessary for developing an agriculture that is on the one hand environmentally sound and on the other hand highly productive, socially equitable and economically viable. Agroecological design is to integrate components so that overall biological efficiency is improved, biodiversity is preserved, and the agroecosystems productivity and its self-regulating capacity is maintained.
  17. 17. QUESTIONS?

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