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The influence of drought stress on the distribution of insects on four groundnut genotypes grown near Hyderabad, India

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Relation http://oar.icrisat.org/6631/
http://dx.doi.org/10.1017/S0007485300018721
 
Title The influence of drought stress on the distribution of insects on four groundnut genotypes grown near Hyderabad, India
 
Creator Wheatley, A R D
Wightman, J A
Williams, J H
Wheatley, S J
 
Subject Groundnut
Entomology
 
Description Four groundnut genotypes were grown in a randomized block design across a drought-stress gradient to determine the influence of this factor on insect distribution in the 1985-86 post-rainy season near Hyderabad, in peninsular India. The gelechiid leaf-miner Aproaerema modicella was most abundant on the most stressed plants. The cicadellid Empoasca kerri had the reverse distribution. The thrips Frankliniella schultzei and Scirtothrips dorsalis were at first densest where drought stress was least. Their distribution subsequently became reversed and, as the condition of their hosts worsened, they again became most abundant at the wetter end of the gradient. Bud necrosis disease caused most mortality where drought stress was highest. A subsidiary experiment indicated that the intensity of overhead irrigation did not influence the density of A. modicella. There were marked genotype effects: JL 24 carried the highest density of insects and was most susceptible to bud necrosis disease; NC Ac 343 had the lowest leaf-miner and cicadellid populations. M 13 and ICGS 11 had intermediate characteristics
 
Publisher CAB International Publishing
 
Date 1989
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/6631/1/BER_79_567-577_1989.pdf
Wheatley, A R D and Wightman, J A and Williams, J H and Wheatley, S J (1989) The influence of drought stress on the distribution of insects on four groundnut genotypes grown near Hyderabad, India. Bulletin of Entomological Research, 79 (4). pp. 567-577. ISSN 0007-4853