2. Institutional Publications
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Item Relative susceptibility of some rice varieties to infestation by rice leaf roller(Kerala Agricultural University, 1979) Balakrishna Pillai, K; Nair, N R; Thomas, M JItem Tolerance of some rice varieties to whorl maggot damage(Kerala Agricultural University, 1979) Balakrishna Pillai, K; Nair, N R; Thomas, M JItem Influence of climatic factors on populations of the brown plant hopper in Kuttanad, Kerala(Kerala Agricultural University, 1980) Nair, K P V; Mammen, K V; Pillai, K B; Nair, S SStudies carried out at the Rice Research Station, Moncompu, Kerala, during 1974-76 showed that in the Kuttanad rice tract, brown plant hopper Nilaparvata /ugens (Stal.) is present in the field throughout the year with a major population peak during January to March for themain crop (winter crop) and a minor peak during August to September for the second crop {autumn crop). Correlation studies revealed that the hopper population was significantly influenced by climatic factors. Rainfall in association with relative humidity and and maximum temperature played a decisive role in regulating the population of the insect.Item New records of plant parasitic nematodes from Kerala(Kerala Agricultural University, 1981) Venkitesan, T S; Charles, J S; Sheela, M S