Southwestern corn borer: influence of planting dates and times of infestation on damage to corn, pearl millet, and sorghum

Starks, K.J. and Burton, R.L. and Wilson, R.L. and Davis, F.M. (1982) Southwestern corn borer: influence of planting dates and times of infestation on damage to corn, pearl millet, and sorghum. Journal of Economic Entomology, 75 (1). pp. 57-60.

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Abstract

Field plots of maize, pearl millet (Pennisetum americanum) and sorghum in Oklahoma were infested by hand with egg-masses of Diatraea grandiosella Dyar to study the effects of infestation time and planting date. The different food-plants reacted similarly, but maize had the greatest amount of damage and millet had the least. Plants infested 2 weeks after anthesis had the least stalk tunnelling, but maize with the earliest infestation time had fewer ears tunnelled. Late plantings of maize and male fertile sorghum had more damage than earlier plantings. The intermediate planting of millet had the least tunnelling. Late-planted maize yielded the least. Conversely, millet and sorghum had heavier losses when planted earlier. Male sterile sorghum (no pollen) had a higher percentage of tunnelled plants and slightly longer tunnels, but fewer heads tunnelled, when compared with male fertile sorghum

Item Type: Article
Author Affiliation: Department of Entomology, Oklahoma State University, Stillwater, OK 74078, USA
Subjects: Plant Protection
Divisions: Millet
Depositing User: Mr B Krishnamurthy
Date Deposited: 03 May 2012 14:20
Last Modified: 03 May 2012 14:20
URI: http://eprints.icrisat.ac.in/id/eprint/5058

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