2. Institutional Publications
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Item 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, RAn 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.Item Estimation of loss of major plant nutrients in percolation in rice fields(Kerala Agricultural University, 1976) Nair, R R; Pisharody, P N; Gopalakrishnan, RIn an investigation conducted at the Rice Research Station, Pattambi, it was found that appreciable amounts of nitrogen, phosphorus and potash moved out of the root zone of rice plants in percolating water. The magnitudes of loss of these nutrients through percolation during the autumn and winter seasons of 1973-74 are reported in this paper.Item Influence of applied nitrogen on grain yield, protein content and milling outturn in transplanted rice(Kerala Agricultural University, 1976) Pisharody, P N; Nair, R R; Gopalakrishnan, RIn an investigation conducted at the Rice Research Station, Pattambi using the early duration strain Thriveni as test variety, it was found th it application of a portion of nitrogen as top dressing at panicle initiation and booting stages increased grain yield, protein content and recovery of head rice. Protein content of grain and head rice recovery were observed to be closely related. Higher the protein content, greater was the recovery of head rice. On equal nitrogen basis, sulphur coated urea applied at planting was as effective as split application but significantly superior to ordinary urea when applied entirely at planting.Item New pre-emergence chemicals for weed control in flooded rice(Kerala Agricultural University, 1978) Nair, R R; Kuriakose, T F; Saifuddin, NItem Slow release nitrogen fertilizers for transplanted rice(Kerala Agricultural University, 1977) Nair, R R; Tomy, P J