Comparative Influence of Green Manure (Trifolium Alexandrinum L.) and Conventional IPM on Population of Sucking Insect Pests of Cotton
Comparative Influence of Green Manure (Trifolium Alexandrinum L.) and Conventional IPM on Population of Sucking Insect Pests of Cotton
Jam Ghulam Mustafa Sahito1*, Tajwer Sultana Syed1, Ghulam Hussain Abro1 and Inayatullah Rajper2
ABSTRACT
Cotton crop is attacked by many insect pests and most of them have developed resistance against the synthetic pesticides. Therefore, this study was conducted to determine the influence of green manure (Trifolium alexandrinum L.) and conventional IPM on population of sucking insect pests of cotton during 2013. The population of sucking insect pests i.e., Bemesia tabaci, Amrasca biguttula biguttula and Scirtothrips dorsalis was recorded on weekly basis cotton grown with both green manure and IPM treatments. The green manure treatments suffered comparatively higher population of B. tabaci (0.83±0.09) and S. dorsalis (3.43±0.47) than IPM treatment with population of 0.46±0.05 whiteflies and 1.98±0.72 thrips, respectively. However, IPM cotton suffered higher A. biguttula biguttula population (1.01±0.10) than green manure treatment (0.49±0.07). Moreover, application of neem oil in green manure treatment and Spintoram in IPM treatment, lowered the population of sucking pests. Considering the results, further studies should be conducted with broader aspects and covering more green manure crops to evaluate their role in the pest management and fertility of the soil.
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