Four Seasons of Learning and Engaging Smallholder Farmers - icrisat
Four Seasons of Learning and Engaging Smallholder Farmers - icrisat
Four Seasons of Learning and Engaging Smallholder Farmers - icrisat
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Testing existing cowpea varieties <strong>and</strong> lines for their drought tolerance<br />
Several cowpea breeding lines on the shelves at NARS <strong>and</strong> IITA breeding nurseries were selected <strong>and</strong><br />
tested for their drought tolerance on-station. Those with enhanced levels <strong>of</strong> drought tolerance were<br />
further selected for testing on farmers’ fields in the five target countries.<br />
Cowpea lines evaluated for drought in farmers’ fields<br />
Table 1 shows the number <strong>of</strong> elite cowpea lines tested in the different countries. There were however 16<br />
common elite lines (IT00K-1263, IT99K-1122, IT96D-610, IT98K-491-4, IT89KD-288, IT98K-311-8-2,<br />
IT98K-166-4, IT99K-216-24-2, IT99K-7-21-2-2, IT98K-412-13, IT97K-390-2, IT98K-628,<br />
IT97K-819-118, IT99-529-1, IT97K-1069-6 <strong>and</strong> IT98K-128-3) tested in all countries. These 16 lines<br />
were from the early maturing, dual purpose, Striga-resistant <strong>and</strong> medium maturing breeding nurseries<br />
at IITA.<br />
Table 5-3: Number <strong>of</strong> improved cowpea breeding lines tested across countries<br />
In country developed breeding lines IITA developed lines Total<br />
Mali - IER 5 43 48<br />
Mozambique - IIAM 16 - 16<br />
Niger - INRAN 11 25 36<br />
Nigeria - IAR 48 20 68<br />
Tanzania - ARI 16 4 20<br />
IITA - Kano - 78 1 78<br />
The listed 16 breeding lines were tested in Mozambique <strong>and</strong> Tanzania in the cropping season <strong>of</strong><br />
2007-2008. The protocol for carrying out the trails was agreed at the project’s launching meeting in<br />
Arusha <strong>and</strong> fine tuned during annual sub-regional meetings held each year.<br />
Protocol for evaluating the breeding lines under terminal drought (agreed on by all)<br />
• Scientist managed<br />
• <strong>Farmers</strong> to visit sites in order to select preferred lines by them<br />
• Large plot sizes 20 x 20 meters<br />
• Two dates <strong>of</strong> planting to enable plants in the second planting experience terminal drought<br />
• Plant protection practices as done on-station<br />
• Spacing between <strong>and</strong> within rows<br />
• L<strong>and</strong> preparation<br />
• Data to be collected<br />
• Names/identities <strong>of</strong> existing lines to be included in each country<br />
After three years <strong>of</strong> evaluations involving farmers’ participation, the cowpea line IT98K-499-35<br />
was selected by farmers in Nigeria <strong>and</strong> Mali for its drought tolerance <strong>and</strong> Striga resistance in Mali.<br />
Cowpea line IT98K-499-38 was selected in Niger for its good performance.<br />
In East Africa, the cowpea lines IT00K-1263 <strong>and</strong> IT98K-1122 were selected by farmers in Tanzania<br />
for their drought tolerance <strong>and</strong> earliness (IT98K-1122) while IT00K-1263 was the preferred line by<br />
farmers in Mozambique.<br />
Progress <strong>of</strong> Phase 1<br />
91