Original Articles

Damage caused by Chilo partellus (Swinhoe) (Lepidoptera: Pyralidae) to various cultivars of grain sorghum, Sorghum bicolor (L.) Moench

Published in: South African Journal of Plant and Soil
Volume 7, issue 3, 1990, pages: 192–196
DOI: 10.1080/02571862.1990.10634566
Author(s): J. van den BergSummer Grain Centre, Republic of South Africa, J., B.J. van RensburgSummer Grain Centre, Republic of South Africa, K.L. PringleDepartment of Entomology and Nematology, Republic of South Africa

Abstract

Grain sorghum cultivars differed significantly in yield response to natural Chilo partellus infestations over a period two seasons. These differences were ascribed to cultivar characteristics of which differences in length of growing season requirements were the most important. Differences in plant height and main stem circumference had a significant but less pronounced effect while peduncle length had no apparent effect. Cultivars exhibited significant differences in yield loss compensation by means of tillering and had different levels of dead heart and internal damage. The incidence of broken panicles did not have a significant effect on yield loss.

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