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  1. No Access

    Article

    Effect of thuricide on rice stem borers

    The effect of thuricide, a commercial preparation ofBacillus thuringiensis Berliner var.Kurstaki was studied on different stages of rice stem borersScirpophaga incertulas, Sesamia inferens andChilo auricilius. It...

    P Nayak, P S Rao, S Y Padmanabhan in Proceedings of the Indian Academy of Scien… (1978)

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    Article

    The relation between certain host characters and bacterial blight incidence in rice

    Amongst the different morphological features of rice varieties studied, no correlation was obtained between disease development and narrow or broad leaves, thick and thin leaves, pale and dark green leaves. Ho...

    A. Premalatha Dath, S. Y. Padmanabhan… in Proceedings / Indian Academy of Sciences (1977)

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    Article

    Physiologic specialisation inPiricularia Oryzae Cav.

    The existence of physiologic races inPiricularia oryzae Cav., the causal fungus of blast disease, has been established in India. Sixteen races and three biotypes were distinguished out of 19 isolates tested. Thre...

    S. Y. Padmanabhan, N. K. Chakrabarti… in Proceedings / Indian Academy of Sciences (1967)

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    Article

    Studies on forecasting outbreaks of blast disease of rice

    An account is given of the incidence of blast disease of rice in correlation with some meteorological factors. The results show that forecasting of blast outbreak in India can be attempted on the basis of mini...

    S. Y. Padmanabhan in Proceedings / Indian Academy of Sciences (1965)

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    Article

    Studies on the host range ofPiricularia oryzae Cav. causing blast disease of rice

    The grassesPanicum repens, Brachiaria mutica, Leersia hexandra, Digitaria sanguinalis orDigitaria setigera do not seem to serve as collateral hosts forPiricularia oryzae Cav. pathogen of blast disease of rice. Th...

    J. Veeraraghavan, S. Y. Padmanabhan in Proceedings / Indian Academy of Sciences (1965)

  6. No Access

    Article

    Breeding rice varieties resistant to blast disease caused byPiricularia oryzae Cav.

    1. Screening tests were carried out with 490 early duration varieties to isolate varieties resistant to blast disease of rice.

    S. Y. Padmanabhan, D. Ganguly, G. H. Chandwani in Proceedings / Indian Academy of Sciences (1964)

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    Article

    Breeding rice varieties resistant to blast disease caused byPiricularia oryzæ Cav.

    S. Y. Padmanabhan, D. Ganguly in Proceedings / Indian Academy of Sciences (1959)

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    Article

    The present position and control of rice diseases in India

    The diseases of rice are estimated to cause annually about 10 per cent. loss in rice production. The more important diseases are “blast,” “helminthosporiose,” “stem rot” and “foot rot”. Of these “foot rot” can...

    S. Y. Padmanabhan in Proceedings / Indian Academy of Sciences (1959)

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    Article

    The relation between loss in viability and seed-borne micro-flora in rice

    The changes taking place on the population of fungi internally borne in rice seeds during storage over relative humidity levels of approximately 10, 25, 50, 75, 90 and 100% were studied. Over 10, 25, and 50% r...

    S. Y. Padmanabhan in Proceedings / Indian Academy of Sciences (1957)

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    Article

    Relation between the age of rice plant and its susceptibility to Helminthosporium and blast diseases

    The susceptibility of rice plants of different ages toHelminthosporium disease was studied by conducting artificial infection tests on three different dates during the season. Three varieties, 2 susceptible and a...

    S. Y. Padmanabhan, D. Ganguly in Proceedings / Indian Academy of Sciences (1954)

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    Article

    Fusarium sp. parasitic onEpipyrops, a lepidopterous parasite of the sugarcanePyrilla

    1. A species ofFusarium was found parasitising pupae ofEpipyrops which in its larval stage is a parasite onPyril...

    S. Y. Padmanabhan in Proceedings / Indian Academy of Sciences (1947)