2. Institutional Publications

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Author: search.filters.author.Pillai, G R

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    Effect of fractional application of lime on the growth and yield of rice (Oryzo saliva L.) in the acidic lateritic loam soil of Pattambi
    (Kerala Agricultural University, 1974) Gopalakrishnan, R; Pisharody, P N; Nair, R R; Pillai, G R
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    Effect of age of seedlings and nitrogen levels on annapurna rice
    (Kerala Agricultural University, 1975) Pillai, G R; Nair, R R; Pisharody, P N; Gopalakrishnan, R
    An investigation was undertaken to study the effect of age of seedlings and nitrogen levels on Annapurna rice at the Rice Research Station, Pattambi, during first and second crop seasons on 1969-70 and 1970-71. The results revealed that the optimum age of seedlings for transplanting was 15 days during first crop season and 20 days during second crop season. Response due to nitrogen was significant only up to 80 Kg N/ha.
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    Investigations on the competing ability of rice with weeds in the rainfed uplands
    (Kerala Agricultural University, 1975) Nair, K R; Pillai, G R; Pisharody, P N; Gopalakrishnan, R
    An investigation was conducted at the Rice Research Station Paltambi during the early kharif seasons of 1972 and 1973 to find out the period of weed competiiion that an upland rice crop could stand without adverse effect on yield, The results revealed that the weed competition was more critical during the early vegetative phase of the crop and that weed free conditions favoured higher grain production. The longest period of weed competition that the upland rice could tolerate was 30 days from sowing without adverse effect on, yield.
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    Response of upland rice to nitrogen as influenced by bulk density of soil
    (Kerala Agricultural University, 1976) Nair, R R; Pisharody, P N; Pillai, G R; Gopalakrishnan, R
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    Herbicidal control of weeds in pineapple variety kew
    (Kerala Agricultural University, 1976) Balakrishnan, S; Pillai, G R; Kannan, K; Gopalakrishnan, R
    A herbicidal trial on pineapple variety 'Kew' was undertaken at the Pineapple Research Centre, Kerala Agricultural University Vellanikkara during the years 1974-76 to test the efficacy of diuron and bromacil at different doses- The herbicides in general effectively controlled a broad spectrum of weeds. Among different dosages tried, diuron 3 kg per hectare was more effective and the treatment gave significantly increased yield without producing any harmful effects to fruit quality. From the point of economics also, diuron 3 kg per hectare was more economical.
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    Response of nendran banana to different levels of N, P and K
    (Kerala Agricultural University, 1977) Pillai, G R; Balakrishnan, S; Veeraraghavan, P G; Santhakumari, G; Gopalakrishnan, R
    Experiments were conducted to study the response of nendran banana to different levels of N, P and K at the Banana & Pineapple Research Station, Kannara for five consecutive seasons from 1963 — 64. The results revealed that the nutrients N and K exerted a significant positive influence on fruit number and bunch weight. The optimum dose of N and K2O corresponding to maximum yield of fruit has been worked out as 191, and 301 g per plant respectively. The economic optimum dose according to to the prevailing market rate has been worked out as 133 and 260 g of N and KSO respectively per plant per year.
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    Investigations on the effect of heavy manuring of rice seed beds
    (Kerala Agricultural University, 1977) Nair, R R; Pillai, G R; Pisharody, P N; Gopalakrishnan, R
    Two field experiments were conducted at the Rice Research Station, Pattambi on seed bed manuring using IRS and Jaya as test varieties. The first experiment (1969—70, 1970—71) aimed to study whether nitrogen application in the main field (0, 40, 80," 120 kg/ha) could be reduced by phosphate manuring (0, 30, 60, 90 kg/ha) of the seed bed. The results showed that response to nitrogen was independent of the dose of phosphours applied in the seed bed. The effect of nitrogen (0, 40, 80 kg/ha) phosphorus (0, 25, 50 kg/ha) and potash (0, 25, 50 kg/ha) individually and in factorial combinations, on the productivity of rice seedlings was investigated in tde second experiment (1970- 71, 1971—72). The results conclusivly proved that applied nutrients had no significant influence on grain yield.
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    Studies on the performance of some mutants of cavendish banana
    (Kerala Agricultural University, 1978) Mary George; Balakrishnan, S; Pillai, G R; Gopalakrishnan, R
    Three field experiments to assess the performance of four mutants of Cavendish banana (Giant governor, Robusta, Peddapacha arati and Monsmari) revealed that the cultivar 'Monsmari' was more productive than other cultivars tried, the next best being Giant Governor. The ripe fruits of Monsmari had high sugar content and lesser acidity compared to other varieties.
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    Effect of leaf area on tuber yield of irrigated tapioca
    (Kerala Agricultural University, 1982) Sushama, P K; Pillai, G R; George, T P; Jose Mathew
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    Performance of groundnut varieties in rice fallows under irrigated conditions
    (Kerala Agricultural University, 1982) Jose Mathew; Thomas, A I; Pillai, G R; Kuruvilla Varghese