Damage assessment of the greenbug on grain sorghum

Teetes, G.L. and Johnson, J.W. (1973) Damage assessment of the greenbug on grain sorghum. Journal of Economic Entomology, 66 (5). pp. 1181-1186.

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Abstract

The density of populations of Schizaphis graminum (Rond.) in plots in a field of sorghum in Texas during 1971-72 was regulated by means of insecticide treatments so as to determine economic injury levels on this crop. As determined by data from tests designed specifically to calculate aphid numbers and plant-damage levels causing significant losses and from previous work, an average of about 1300-1500 aphids/plant at about the bloom stage of growth and an average leaf mortality of more than 3/plant resulted in economic loss

Item Type: Article
Author Affiliation: Texas Agricultural Experiment Station, Texas A&M University, Agricultural Research and Extension Center, Lubbock, Tex. 79401, USA
Subjects: Plant Protection
Divisions: Sorghum
Depositing User: Ms K Syamalamba
Date Deposited: 02 Jul 2012 10:49
Last Modified: 02 Jul 2012 10:50
URI: http://eprints.icrisat.ac.in/id/eprint/6447

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