Response of old and new cowpea varieties to insecticide spray regimes in the Sudan savanna of Nigeria
Insect pests are major constraint to cowpea production in northern Nigeria causing yield losses up to 70%. Several cowpea varieties have been developed and delivered to farmers by IITA over the past four decades. These varieties have varying degrees of resistance to insect pest attacks. A field stud...
| Autores principales: | , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Informa UK Limited
2013
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/79816 |
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