Browsing by Author "Thomas, B"
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Item Chemical control of the rice leaf roller Cnaphalocrocis Medinalis Guen(Kerala Agricultural University, 1977) Thomas, B; Karunakaran, KA field trial was conducted in the Rice Research Station, Pattambi for four consecutive seasons in 1974-75 and 1975-76 with a view to study the relative efficiency of ten insecticides against the Rice Leaf roller Cnaphalocrocis medinahs. Leptophos, monocrotophos, ethyl parathion, quinalphos and dicrotophos applied at 0.25 kg a.i/ha and carbaryl applied at 0.5 kg a.i/ha were highly effective in checking the pest incidence.Item Effect of planting seasons and the associated weather conditions on the incidence of the rice stem borer Tryporyza incertulas (Walker)(Kerala Agricultural University, 1972) Abraham, C C; Thomas, B; Karunakaran, K; Gopalakrishnan, RItem Occurrence of ‘tungro' virus disease of rice in Kerala(Kerala Agricultural University, 1973) Gopalakrishnan, R; Thomas, B; Shanmugham, S NItem Relative efficiency of some plant products in controlling infestation by the Angoumois grain moth Sitotroga cerealella Olivier (Gelechiidae: Lepidoptera) infesting stored paddy in Kerala(Kerala Agricultural University, 1972) Abraham, C C; Thomas, B; Karunakaran, K; Gopalakrishnan, RItem Studies on the rice swarming caterpillar , Spodoptera mauritia boisduval in Kerala(Division of entomology ,Agricultural college and research institute ,Vellayani., 1967) Thomas, B; M R G K Nair