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African Crop Science Journal
African Crop Science Society
ISSN: 1021-9730 EISSN: 1021-9730
Vol. 5, No. 4, 1997, pp. 385-393
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Bioline Code: cs97044
Full paper language: English
Document type: Research Article
Document available free of charge
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African Crop Science Journal, Vol. 5, No. 4, 1997, pp. 385-393
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Kalule, T.; Ogenga-Latigo, M.W. & Okoth, V.A.O.
Résumé
La distribution et les degets causes par les insectes terebrants
(stemborers) des tiges du mais, Chillo partellus (Swinhoe),
Busseola fusca (Fuller), Eldama Saccharina Walker, et
Sesamia calamistis Hampson, ont ete etudies dans deux endroits en
Ouganda. La composition specifique des insectes terebrants a ete influencee
par la phenologie de la culture. La distribution des larves des insectes
terebrants dans la plantes s'est revelee semblable dans les deux sites.
Deux a trois semaines apres l'emergence de la plante (WAE), 100% des larves
retrouvees provenaient de la cheminee de la plante avec une proportion
decroissant avec l'elongation de la tige. Busseola fusca et Chilo
partellus etaient plus agressives comme l'indiquaient l'etendue de la
feuille et la blessure de la tige. Sesamia calamistis attaquait
surtout les epis du mais. Cette relation phenologique de la variation dans
l'incidence des insectes terebrants sur les tiges et les degets causee a la
phenologie de la culture est cruciale dans les strategies combinees du
controle des pestes.
Mots Clés
Busseola fusca, Chilo partellus, Sesamia calamistis, Eldama saccharina, phenologie de la culture,tunnel de la tige, Zea mays
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en |
Seasonal fluctuations and damage of lepidopteran stemborers of maize in a major agroecozone of Uganda
Kalule, T.; Ogenga-Latigo, M.W. & Okoth, V.A.O.
Abstract
The distribution and damage of stemborers of maize, Chilo partellus
(Swinhoe), Busseola fusca (Fuller), Eldana saccharina Walker,
and Sesamia calamistis Hampson, were studied in two locations in
Uganda. The species composition of the stemborers was influenced by crop
phenology. Distribution of stem borer larvae in the plant was similar at
both locations. At 2-3 weeks after plant emergence (WAE), 100% of larvae
recovered was from the funnel of the plant with the proportion decreasing
as the stem elongated. Busseola fusca and Chilo partellus
were more injurious as indicated by the extent of leaf and stem injury.
Sesamia calamistis predominantly attacked the maize ears. This
phenological relationship of variation in stemborer incidence and damage to
crop phenology is crucial in devising management strategies of the
pests.
Keywords
Busseola fusca, Chilo partellus, Sesamia calamistis, Eldana saccharina, crop phenology, stem tunnelling, Zea mays
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© Copyright 1997 - African Crop Science Society
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