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Permanent URI for this collectionhttp://localhost:4000/handle/123456789/1975
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Item On increasing the efficiency of superphosphate in slightly acid submerged soils(Kerala Agricultural University, 1979) Kabeerathumma, S; Padmaja, P; Koshy, M MItem Effect of increasing levels of nitrogen on growth pattern, yield components and yield of high yielding dwarf indica rice -Ratna(Kerala Agricultural University, 1976) Padmaja, PItem Note on the run off losses of major plant nutrients in water-logged rice soils(Kerala Agricultural University, 1978) Padmaja, P; Koshy, M MItem Efficiency of primed rock phosphate for grain production in rice(Kerala Agricultural University, 1982) Madhusoodhanan Nair, K; Padmaja, PPotted plant studies were conducted in five major rice soils of Kerala namely karappadom, laterite, kayal, coastal sandy and kole soils to evaluate the efficiency of primed rock phosphate in moist aerobic soil with superphospate applied at flooding. Fractionation studies on the fate of applied phosphate revealed that priming of rock phosphate in moist aerobic soil resulted insubstantial conversion of phosphate to iron phosphate and aluminium phosphate and these products increased availability of phosphorus to rice on submergence. Primed rock phosphate was found to be as efficient as superphosphate in karappadom, kayal and coastal sandy soil in yield and uptake of phosphorus. But in laterite soil it was found to be significantly superior to superphosphate.Item Residual effect of primed rockphosphate on succeeding pulse crop(Kerala Agricultural University, 1985) Madhusoodhanan Nair, K; Padmaja, PItem Kinetics of available silica of submerged acid soils(Kerala Agricultural University, 1987) Kabeerathumma, S; Padmaja, P; Patnaik, SItem Time of application of potassium on nitrogen utilization and yield of dwarf indica rice varieties(Kerala Agricultural University, 1987) Shehana, R S; Padmaja, PA pot culture trial was conducted using the soil belonging to the order Entisols collected from Pattambi and Trivandrum districts of Kerala. Skipping basal application of muriate of potash along with urea and application of potassic fertilizer at maximum tillering and reproductive stages enhanced grain yield for the medium duration variety Jaya by increasing number of earheads, thousand grain weight and increasing the percentage of fertile grains per panicle. Skipping of potassic fertilizers as basal dose increased soil availability of NHJon nitrogen, the most important from of nitrogen utilized by submerged rice. Initial growth stage was considered as one of the most efficient periods of utilization of nitrogen by rice. For a short duration variety like Triveni 1 7.5 kg K20/ha was found sufficient for obtaining maximum yield. A small basal dose of potassic fertilizers was found required for short duration varieties for obtaining maximum yield.Item Phosphorus fixing capacity of major rice soils of Kerala(Kerala Agricultural University, 1983) Madhusoodhanan Nair, K; Padmaja, PItem Low cost technology for the collection of vermiwash in homesteads(Kerala Agricultural University, 1998) Padmaja, P; Ushakumari, K; Prabhakumari, PItem Efficiency of vermicompost on growth and yield of summer crop Okra (Abelmoschus esculentus moench)(Kerala Agricultural University, 1999) Ushakumari, K; Prabhakumari, P; Padmaja, P