relation: http://oar.icrisat.org/1065/
title: Assessment of the Economic Impact of Sorghum Variety S 35 in Chad
creator: Yapi, A M
creator: Dehala, G
creator: Ngawar, K
creator: Issaka, A
subject: Sorghum
subject: Agriculture-Farming, Production, Technology, Economics
description: The S 35 sorghum variety is a nonphotoperiod-sensitive, high-yielding, ear ly-matur ing, and drought -  tolerant pure line that originated from ICRISAT' s breeding program in India, and was later advanced  and promoted in Cameroon and Chad. Its int roduct ion into drought -prone areas of Chad has been  very successful wi t h a net present value of research investments estimated at US$ 15 mi l l ion, representing  an internal rate of return of 95%. Two crucial factors explain this apparent success: (1) germplasm  research spillovers from ICRISAT and Cameroon's breeding programs substantially reduced the t ime  lag in S 35 research and development in Chad; and (2) the FAO/UNDP-suppor ted seed project at  Gassi not only successfully mul t ipl ied S 35 seed on a large scale, but also dist r ibuted it to farmers by  adopt ing the 'mini-doses' approach and involving the Office national de developpement rural and  NGOs .  Since the recommended management practices for S 35 adopt ion are simple, relatively easy to implement  wi t h available fami ly labor and animal t ract ion, and are not capital intensive, the technology has  found favor wi t h many farmers. Between 1990 and 1995, the percentage of adopting farmers grew f rom  14% to 80%. In 1990, 7% of the total sorghum area (13 000 ha) was sown to the S 35 variety. By 1995,  the area under S 35 had increased to 27% (66 000 ha). A yield advantage of about 5 1 % over farmers'  local varieties is associated wi t h the adopt ion of S 35.  The three major constraints cited by farmers - susceptibility of the variety to bi r d attack, the high cost of  seed, and low soil fertility - should assist in the formulat ion of future research priorities.
publisher: International Crops Research Institute for the Semi-Arid Tropics
date: 1999
type: Monograph
type: NonPeerReviewed
format: application/pdf
language: en
identifier: http://oar.icrisat.org/1065/1/RA_00338.pdf
identifier:   Yapi, A M and Dehala, G and Ngawar, K and Issaka, A  (1999) Assessment of the Economic Impact of Sorghum Variety S 35 in Chad.  Documentation. International Crops Research Institute for the Semi-Arid Tropics, Patancheru, Hyderabad, Andhra Pradesh.     
relation: ISE 006