IBADAN and MEXICO CITY, Feb 17 2021 (IPS) - 17 February – African smallholder farmers have no choice but to adapt to climate change: 2020 was the second hottest year on record, while prolonged droughts and explosive floods are directly threatening the livelihoods of millions. By the 2030s, lack of rainfall and rising temperatures could render 40 percent of Africa’s maize-growing area unsuitable for climate-vulnerable varieties grown by farmers, while maize remains the preferred and affordable staple food for millions of Africans who survive on less than a few dollars of income a day.
Farmers across the continent understand that the climate crisis is affecting their harvests and their “daily bread”. In sub-Saharan Africa, growing numbers of people are chronically undernourished, with over 21 percent of the population suffering from severe food insecurity.

The global battle against climate change and all its interconnected impacts requires a multisectoral approach to formulate comprehensive responses. For farmers in sub-Saharan Africa, especially smallholders, this involves producing improved crop varieties that are not only high-yielding but also tolerant to drought and heat, resistant to diseases and insect pests, and can contribute to minimizing the risk of farming under rainfed conditions.
CGIAR, a global partnership involving numerous organizations engaged in food systems transformation, has been at the forefront of technological innovation and deployment for many decades. The International Maize and Wheat Improvement Center (CIMMYT) and the International Institute of Tropical Agriculture (IITA) are the two CGIAR research centers undertaking innovative maize research and development work in the stress-prone environments of Africa.

Successful development of improved climate-adaptive maize varieties for sub-Saharan Africa has been spearheaded by these two CGIAR centers that implemented joint projects such as the Drought Tolerant Maize for Africa (DTMA) and Stress Tolerant Maize for Africa (STMA) in partnership with an array of national and private sector partners in the major maize-producing countries in Eastern, Southern, and West Africa. Under the 10-year DTMA initiative, about 160 affordable and scalable maize varieties were released.
High-yielding, multiple stress-tolerant, maize varieties using CIMMYT/IITA maize germplasm released after 2007 (the year the DTMA project was started) are estimated to be grown on 5 million hectares in 2020 in sub-Saharan Africa. The adoption of drought-tolerant (DT) maize varieties helped lift millions of people above the poverty line across the continent. For example, in drought-prone southern Zimbabwe, farmers using DT varieties in dry years were able to harvest up to 600 kilograms more maize per hectare—enough for nine months for an average family of six—than farmers who sowed conventional varieties.

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