This chapter focuses on the assessment of the performance of maize and wheat crop improvement in East and Southern Africa. Information on cultivar output and adoption in countries in East and Southern Africa is also presented.
Maize (Zea mays L.) productivity in the sub‐Saharan Africa is constrained by biotic and abiotic stresses that reduce yield. In the region, one of the most serious abiotic factor is frequent intermittent droughts, which has been attributed to climate change. The purpose of this paper was to use on‐farm demonstration studies and farmer field days to demonstrate new drought mitigation technology and provide information on how small farmers can reduce yield losses. A total of 4814 demonstration plots of 39 DroughtTEGO maize hybrids and 19 commercial check hybrids were established in 17 counties across the low‐to‐mid‐altitude maize‐growing agroecologies of Kenya between 2015 and 2017. A total of 246 field‐day workshops were conducted. Combined analyses across years and locations showed that top five DroughtTEGO hybrids increased maize yields 33 to 54% (5.5–6.3 Mg ha−1) relative to conventional hybrids. The highest yield advantage of DroughtTEGO hybrids over commercial checks was observed in the drier lower eastern region in Kenya. Farmers particularly women, preferred the DroughtTEGO hybrids because of the stay‐green character, whiteness of flour (milling quality), root lodging resistance, drought‐tolerance and shelling percentage. Results from this study suggested that smallholder farmers can reduce the impact of drought by seeding drought‐tolerant maize hybrids.
Core Ideas
High yields and farmer‐preferred traits determine adoption of new varieties.
Conducting on‐farm demonstrations can overcome adoption barriers.
Planting of drought‐tolerant hybrids mitigates drought stress for smallholder‐farmers.
to address the impact of drought occasioned by climate change. To determine the level of adoption and use of DroughtTEGO ® maize hybrids in Kenya, a survey was conducted involving 642 farming households from six counties. The results indicated a high rate of awareness of at least one of the DroughtTEGO ® varieties (61%). The adoption rate stood at 26% with WE1101 maize hybrid being the most widely known and adopted due to its availability and high yields. Expected adoption was calculated at 89% with about 65% new farmers adopting the DroughtTEGO ® hybrids. Lack of full information on the productivity, non-availability of the seed when required and the varieties being expensive compared to other locally available varieties were found to be key barriers to its adoption. The econometric results reveal statistical differences between the variables that influence awareness and adoption of DroughtTEGO ® hybrid seed. Variables that determined adoption included age of the household head, fellow farmers and demonstration sites as the primary main source of seed information. Other variables were record-keeping, women's control of household resources, perception of food security, price, and location. Well-thought-out strategies that target these variables can be effective in attracting new adopters. Thus, the study recommends, promotional messages and extension approaches appropriate to both the young and the aged, better seed pricing strategies, women's control of household resources to be encouraged, and specific locations with low probability of adoption should be given priority. Steps could include the promotion of the varieties through on-farm demonstrations with wider coverage, strengthening of the extension service and allocation of resources for extension activities in Kenya. Other broad recommendations that emanated from the study included timely availability and delivery of quality DroughtTEGO ® seed and availability of credit facilities. It is important to investigate the case of adopters who discontinued using these varieties.
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