Granular systemic insecticides for control of green peach aphid (Myzus persicae) and their effect on yield and quality of tobacco grown in riverside lankas |
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| Authors: | J A V Prasadarao A Hanumantharao D Subbarao G Ramaprasad |
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| Institution: | Indian Council of Agricultural Research , Central Tobacco Research Institute , Rajahmundry, 533 105, India |
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| Abstract: | Abstract Flue‐cured Virginia (f.c.v.) tobacco grown on deltaic islands or lankas in the Godavari river in Andhra Pradesh, India is subject to heavy infestations of green peach aphid, Myzus persicae Sulz. The relative efficacy of granular formulations of the systemic insecticides phorate, disulfoton, carbofuran, aldicarb and terbufos in controlling the aphid, and their effect on the yield and quality of lanka tobacco have been studied. Aldicarb granules at 1 g/plant and disulfoton at 2 g/plant were found to be the most effective in controlling the aphid, and also resulted in higher yields of green leaf, cured leaf and total bright leaf equivalent (an index of visual quality). Terbufos at 2 g/plant also gave good yields, but was slightly less effective in controlling aphid infestations. Carbofuran at 3 g/plant was the least effective. The chemical quality of f.c.v. tobacco was not affected by the application of granular insecticides to the soil. |
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