Integrated Management of Major Field Pests of Cowpea In Eastern Uganda

This study, which was done on-farm and in phases, aimed at developing a farmer and environmentally friendly management package against major cowpea pests. The pests considered were Aphis craccivora, Megalurothrips sjostedti, Maruca vitrata and pod sucking bugs. One trial examined the potential of intercropping in the management of the major field pests of cowpea. Another trial studied the effect of seed dressing and host resistance on cowpea field pest infestation. The best treatments from these two trials were combined (integrated pest management) and tested together with a minimum foliar insecticide application. Intercropping cowpea and sorghum combined with carbofuran "seed dressing" and minimal insecticide spray application (spraying once at budding, flowering and at podding) increased grain yields (ca 1350 kg ha-1) markedly compared to the unsprayed plots (ca 200 kg ha-1), those receiving foliar insecticide spray (ca 1000 kg ha-1) or carbofuran seed dressing only (ca 400 kg ha-1).Cette \ue9tude, qui a \ue9t\ue9 conduite en mili\ue8u r\ue9el et en phases, visait au d\ue9veloppement des packets de gestion contre les principaux pestes du ni\ue9be qui sont acceptables par les \ue9cologies et les agriculteurs. Les pestes consid\ue9r\ue9s \ue9taient Aphis craccivora, Megalurothrips sjostedti, Maruca vitrata et les punaises suceuses de gousses. Un essai examinait le potential d\u2019association dans le controle de principaux pestes de champs du ni\ue9b\ue9. Un autre essai a \ue9tudi\ue9 l\u2019effet du traitement de semence et de la r\ue9sistance de l\u2019hote sur l\u2019infestation de peste de champ du ni\ue9b\ue9. Les meilleurs traitements de deux essais ont \ue9t\ue9 combin\ue9s (gestion int\ue9gr\ue9e de peste) et test\ue9s ensemble avec l\u2019application minimale d\u2019insecticide foliaire. L\u2019association du ni\ue9b\ue9 avec le sorgho combin\ue9e avec le traitement de semences au carbofuran et l\u2019application de la pulv\ue9risation minimale d\u2019insecticide (pulv\ue9risation une fois au bourgeonnement, \ue0 la floraison et \ue0 la formation des gousses) a augment\ue9 le rendements en grains (ca 1350 kg ha-1) remarquablement compar\ue9 aux parcelles non pulv\ue9ris\ue9es (ca 200 kg ha-1), \ue0 celles recevant la pulverisation d\u2019insecticide foliaire (ca 1000 kg ha-1) ou le traitement des semences au carbofuran seul (ca 400 kg ha-1)