An Ecologically Sustainable Approach to Agricultural Production Intensification: The Save and Grow Vision
نویسندگان
چکیده
The root cause of agricultural land degradation and decreasing productivity – as seen in terms of loss of soil health -is our low soil-carbon farming paradigm of intensive tillage which disrupts and debilitates many important soil-mediated ecosystem functions. For the most part agricultural soils in tillage-based farming without organic surface residue protection are becoming de-structured and compacted, exposed to increased runoff and erosion, and soil life and biodiversity is deprived of habitat and starved of organic matter, leading to decrease in soil‟s biological recuperating capacity. . Conservation Agriculture (CA) is a cropping system based on no or minimum mechanical soil disturbance, permanent organic mulch soil cover, and crop diversification. It is an effective solution to stopping agricultural land degradation, for rehabilitation, and for sustainable crop production intensification. CA is now adopted by large and small farmers on some 125 million hectares across all continents and is spreading at an annual rate of about 7 million hectares. Advantages offered by CA to farmers include better livelihood and income, decrease in financial risks, and climate change adaptability and mitigation. For the small manual farmer, CA offers ultimately up to 50% labour saving, less drudgery, stable yields, and improved food security. To the mechanised farmers CA offers lower fuel use and less machinery and maintenance costs, and reduced inputs and cost of production (including labour when CA involves the use of integrated weed management. In pro-poor development programmes involving resource-poor small-scale farmers, every effort should be made to help producers adopt CA production systems. This is because CA produces more from less, can be adopted and practiced by smallholder poor farmers, builds on the farmer‟s own natural resource base, does not entirely depend on purchased derived inputs, and is relatively less costly in the early stages of production intensification.
منابع مشابه
An ecologically sustainable approach to agricultural production intensification: Global perspectives and developments
The root cause of agricultural land degradation and decreasing productivity–as seen in terms of loss of soil health–is our low soilcarbon farming paradigm of intensive tillage which disrupts and debilitates many important soilmediated ecosystem functions. For the most part agricultural soils in tillagebased farming without organic surface residue protection are becoming destructured and com...
متن کاملINVITED REVIEW Sustainable intensification in agricultural systems
†Background Agricultural systems are amended ecosystems with a variety of properties. Modern agroecosystems have tended towards high through-flow systems, with energy supplied by fossil fuels directed out of the system (either deliberately for harvests or accidentally through side effects). In the coming decades, resource constraints over water, soil, biodiversity and land will affect agricultu...
متن کاملGMOs: A Good but Battered Means for Sustainable Production Intensification
FAO promotes Sustainable Production Intensification (SPI), which consists of a technology menu for optimizing crop production per unit area, taking into consideration the range of sustainability aspects including potential and/or real social, political, economic and environmental impacts. The author suggests that Genetically Modified Organism (GMO) cropping is not only well aligned to SPI but a...
متن کاملSmallholder Farms and the Potential for Sustainable Intensification
The sustainable intensification of African agriculture is gaining momentum with the compelling need to increase food and agricultural production. In Southern Africa, smallholder farming systems are predominately maize-based and subject to erratic climatic conditions. Farmer crop and soil management decisions are influenced by a plethora of complex factors such as market access resource availabi...
متن کاملAgricultural intensification and ecosystem properties.
Expansion and intensification of cultivation are among the predominant global changes of this century. Intensification of agriculture by use of high-yielding crop varieties, fertilization,irrigation, and pesticides has contributed substantially to the tremendous increases in food production over the past 50 years. Land conversion and intensification,however, also alter the biotic interactions a...
متن کامل