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Samaru Journal Of Agricultural Education

Year: 2018|   Volume No: 8|   ISSN: 0794 – 7860|   Page No: 


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Title:  EVALUATION OF SOME COWPEA VARIETIES FOR RESISTANCE TO THE POD BORER (MARUCA VITRATA (G.)FAB. (LEPIDOPTERA: PYRALIDAE) IN ZARIA, KADUNA STATE

1NURADEEN*,M.,2ADAMU, R. S.,2BAMAIYI, L. J., 2USMAN, M. S. AND 3UMAR, U. U

1SCHOOL OF AGRICULTURAL TECHNOLOGY, NUHU BAMALLI POLYTECHNIC, SAMARU KATAF CAMPUS 2DEPARTMENT OF CROP PROTECTION, INSTITUTE FOR AGRICULTURAL RESEARCH, AHMADU BELLO UNIVERSITY, ZARIA

3DEPARTMENT OF BIOLOGICAL SCIENCE, KADUNA STATE UNIVERSITY, KADUNA 

ABSTRACT

Maruca vitrata is a serious pest damaging the reproductive parts of legumes by feeding from inside a webbed mass of leaves, buds and pods causing maximum reduction in grain yield. Trial was carried out in the field during 2014 cropping season at Samaru, Zaria to evaluate some cowpea varieties for resistance to legume pod borer. Twelve cowpea varieties were sown to evaluate for resistance to M. vitrata using three sowing dates at two weeks interval. The experiment was laid out in Randomized Complete Block Design (RCBD) replicated three times. No insecticides were applied as the study was under natural infestation condition. Based on the percentage pod damage, damage score for each variety were given resistance rating 1-5. The results showed that the first sowing date (early August) were less infested by M. vitrata and differed significantly (p<0.05) from those sown in early September. All the varieties sown early August to late August had less Maruca infestation and produced higher grain yields than those sown early September. Wild cowpea (Vigna dekendtiana) was highly resistant and differed significantly (P<0.05) from the cultivated varieties, SAMPEA 1, SAMPEA 4, SAMPEA 6, SAMPEA 9 and SAMPEA 10 were the most susceptible varieties with higher pod and seed damage and low grain yields. SAMPEA 7, SAMPEA 8, SAMPEA 11, SAMPEA 12, SAMPEA 14, and SAMPEA 15 were moderately resistant. Therefore, highly resistant and moderately resistant varieties can be utilized by farmers and in breeding programmes for the management of pod borer as a component of IPM. 

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