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Yield loss caused by Coryna hermanniae Fabricius (Coleoptera: Meloidae) on pearl millet in Nigeria

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Relation http://oar.icrisat.org/1685/
 
Title Yield loss caused by Coryna hermanniae Fabricius (Coleoptera: Meloidae) on pearl millet in Nigeria
 
Creator Ajayi, O
Ajiboye, T O
Abubakar, B
 
Subject Millets
 
Description In 1997, field trials were conducted in Nigeria to determine pearl millet grain yield losses caused by C. hermanniae under free-choice and no-choice conditions. Head cages were used to artifically infest panicles with 5, 10, 15, 20, 25 or 30 C. hermanniae adults per panicle for 3 weeks from the beginning of flowering. Panicle weight at maturity declined from 43 g/25 cm panicle length in the control by 14.9% with 5 beetles per panicle to a decrease of 63% with 30 beetles per panicle. Grain yield decreased from 30 g/25 cm panicle length by 75% with 30 beetles per panicle. Yield loss on naturally infested panicles was calculated to be 19%. These results support the hypothesis that C. hermanniae is a potentially serious pest of pearl millet in West Africa.
 
Date 1998
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/1685/1/ISMN39_145-147_1998.pdf
Ajayi, O and Ajiboye, T O and Abubakar, B (1998) Yield loss caused by Coryna hermanniae Fabricius (Coleoptera: Meloidae) on pearl millet in Nigeria. International Sorghum and Millets Newsletter, 39. pp. 145-147.