2. Institutional Publications

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Author: search.filters.author.Mammen, K VSubject: search.filters.subject.rice-pest

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    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 S
    Studies 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.