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Evaluation of yield stability of cowpea under sole and intercrop management in Nigeria

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Title Evaluation of yield stability of cowpea under sole and intercrop management in Nigeria
 
Creator Blade, S.
Mather, D.
Singh, B.
Smith, D.
 
Subject COWPEAS
INTERCROPPING
YIELDS
 
Description Nine cowpea (Vigna unguiculata (L.) Walp.) breeding lines were grown in 13 experiments under sole crop and intercrop management, with and without insecticide application, in Nigeria. Cowpea was intercropped with cassava (Manihot esculenta Cranz), maize (Zea mays L.) and maize-cassava in the forest zone and with sorghum (Sorghum bicolor Moench.) and millet (Pennisetum glaucum (L.) R.Br.) in the savanna zone. Line by cropping system interactions were significant in 5 of 13 experiments and line by insecticide treatment interactions were significant in 2 of 13 experiments. Cowpea yield was severely depressed in intercropped plots and in plots to which no insecticide was applied. Among-environment variation in cowpea yield was greater when no insecticide was applied. Within each management treatment, the yield performance and stability of the cowpea lines was examined. Stability was assessed both by examining among-environment coefficients of variation and by regression analysis. Several of the breeding lines evaluated appeared promising under different levels of management and in a diversity of environments.
Peer Review
 
Date 2018-12-19T07:01:31Z
2018-12-19T07:01:31Z
1992
 
Type Journal Article
 
Identifier Blade, S., Mather, D., Singh, B. & Smith, D. (1992). Evaluation of yield stability of cowpea under sole and intercrop management in Nigeria. Euphytica, 61(3), 193-201.
0014-2336
https://hdl.handle.net/10568/98692
 
Language en