Assessment of the economic impact of sorghum variety S 35 in Chad
1999
Yapi, A.M. | Dehala, G. | Ngawara, K. | Issaka, A.
The S 35 sorghum variety is a nonphotoperiod-sensitive, high-yielding, early-maturing, and drought-tolerant pure line that originated from ICRISAT, India and was later promoted in Cameroon and Chad. Its introduction into drought-prone areas of Chad was sucessful with a net present value of research investments estimated at US$ 15 million, representing an internal rate of return of 95 percent. Its success was due to (1) germplasm research spillovers from ICRISAT and Cameroon's breeding programs; and (2) the FAO/UNDP-supported seed project at Gassi which multiplied S 35 seed on a large scale and distributed it to farmers by adopting the 'mini-doses' approach. Between 1990 and 1995, the percentage of adopting farmers grew from 14 percent to 80 percent. By 1995, the area under S 35 had increased to 27 percent (66 000 ha). A yield advantage of about 51 percent over farmers' local varieties is associated with the adoption of S 35
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