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Item Evaluation of different methods for reducing percolation loss of water in rice fields(Kerala Agricultural University, 1983) George, T P; Balakumaran, K N; Jose Mathew; Sushama, P K; Pillai, G R; Kuruvilla VargheseAfield experiment was conducted in a sandy loam soil of the Agronomic Research Station, Chalakudy for five years (1974-'80 to study the efficiency of puddling with different implements (power tiller, country plough and wetland puddler), soil dressing with lateritic,loam and sub-soil compaction at 30 cm depth in reducing percolation loss in rice fields. The study showed that these methods neither effectively reduced the water loss nor influenced the grain yield.Item Response of winter rice to different water regimes and nitrogen levels(Kerala Agricultural University, 1990) Jose Mathew; Kuruvilla Varghese; Pillai, G R; Santhakumari, GA sutudy was conducted at the Agrnomic Research Station, Chalakudy for three consecutive winter (second crop) seasons from 1983-84 to 1985-86 to study the effect of different water regimes and nitrogen levels on the growhth and yield of short duration rice variety Triveni. Four water regimes (continuous submergence of 5±2 cm and 7