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It describes how farmers in Africa are successfully adopting Conservation Agriculture as an alternative to the unsustainable conventional farming practices and as a solution to loss of agricultural productivity, soil erosion and land degradation, climate change challenges and ever-increasing food insecurity.
Conservation Agriculture (CA) aims to concurrently promote agricultural productivity, local livelihoods, climate resilience and other environmental objectives. We review the emerging evidence base in Eastern and Southern Africa to address whether CA is climate smart and why adoption rates by smallholders remain generally very low.
Specific practices of conservation agriculture (CA) in sub-Saharan Africa are diverse and vary according to local farming conditions. However, despite more than two decades of investment in its development and dissemination, adoption of CA is low.
Common farming practices in sub-Saharan Africa (SSA) such as intensive and repeated tillage, complete crop residue removal, and biomass burning create risks of soil degradation. To reduce these risks, conservation agriculture (CA) uses minimal soil disturbance, crop residue retention, and crop rotation in order to reduce soil erosion, improve ...
Conservation agriculture is claimed to be a panacea for the problems of poor agricultural productivity and soil degradation in sub-Saharan Africa (SSA). It is actively promoted by international research and development organisations, with such strong advocacy that critical debate is stifled.
The agricultural sector in Africa has been impacted by flooding, droughts, soil erosion, land degradation and deforestation, leading to human migration within Africa and to out migration from Africa. Agriculture is not only impacted upon by climate change but also contributes to global warming.
This chapter (i) defines conservation agriculture (CA); (ii) describes the global and regional level environment for CA; (iii) shows where CA is practiced in Africa; (iv) identifies the key stakeholders in the evolution of CA in Africa; and (v) presents an overview of the New Partnership for Africa's Development (NEPAD) and the Comprehensive ...
In the short term, conservation agriculture does not overcome problems of poor crop productivity and food insecurity of smallholder farmers in sub-Saharan Africa.
Similar wheat yields in conservation agriculture and conventional agriculture under warming. Experimental warming was imposed using infrared heaters to plots used for wheat and maize cultivation ...
Farmer adoption of conservation agriculture practices covers more than 627,000 hectares in Malawi, Zambia and Zimbabwe, with yield benefits of 30% to 50% (up to 140%) under drought conditions.