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Item Screening rice types for salinity tolerance(Kerala Agricultural University, 1979) Tajuddin, E; Chandrasekaran, SItem Effect of graded doses of nitrogen on the growth, yield and nitrogen uptake of soyabean under rhizobium inoculated and non-inoculated conditions(Kerala Agricultural University, 1974) Vikraman Nair, R; Tajuddin, EItem Effect of bore well saline waters on three rice types(Kerala Agricultural University, 1979) Tajuddin, E; Chandrasekaran, SEffect of three bore well saline waters of EC 1500, 2000 and 2500 micromhos per cm were compared with rain water (Control) on the performance of three short duration photoinsensitive rice types viz., ADT-31, Ac-1 and Ac-2 in a pot culture experiment with alluvial clay soil of the Annamalai University Experimental Farm. With water of EC 1500 micromhos per cm, Ac-1 and Ac-2 gave significantly higher grain yield than ADT-31 . With water of EC 2000 micromhos per cm, ADT-31 failed to survive while the types Ac-1 and Ac-2 survived to maturity and yielded even with water of EC 2500 micromhos per cm. Of the two types Ac-1 and Ac-2, the former was superior. By the use of saline water, hazard on plant was found to be mainly due to build-up of soil salinity but not due to that of ESP. With the introduction of a plant type Ac-1, scope on the efficient use of bore well saline water is indicated.Item Effect of potassium and rhizobial inoculation on growth, yield and quality of soybean in the sandy clay loam soils of Kerala(Kerala Agricultural University, 1982) Reena Grittle Pinhero; Tajuddin, E; Abdul Salam, M; Vikraman Nair, RAn experiment wasconducted at the Instructional Farm attached to the College of Horticulture, Vellanikkara to study the effect of potassium and rhizobiai inoculation on growth, yield and quality of soybean. The study revealed that applied potassium and rhizobiai culture inoculation did not significantly influence growth characters, yield components, seed yield and stoveryield. Protein content and oil content were significantly influenced by levels of potassium and inoculation. The highest oil content was recorded by 120 kg K20/ha and the highest protein content was obtained without application of potassium. Inoculation increased the protein content and decreased the oil content of seeds. Studies on residual effects of treatments during 2nd crop season revealed that there was no marked variation in seed yield.Item Estimation of leaf area in pumpkin from leaf diameter(Kerala Agricultural University, 1985) Radha Lakshmanan; Tajuddin, EItem Effect of applied potassium and rhizobial inoculation on nodulation and uptake of fertilizer nutrients by soybean(Kerala Agricultural University, 1983) Reena Grittle Pinhero; Tajuddin, E; Abdul Salam, M; Vikraman Nair, RItem Effect of continuous application of fertilizer nutrients on the long term productivity of a rice cropping system(Kerala Agricultural University, 1990) Tajuddin, E; Abdul Salam, M; Shahul Hameed, S M; Yageen Thomas; Devandesan, SField experiments conducted for a period of seven years to study the effect of continuous application of fertilizer nutrients on the long term productivity of a rice based cropping system revealed that nitrogen application increased grain yield in all the seasons for a period of seven years. Both the physical and economic optimum dose of N decreased @ 4.06 and 3.7% per season, respectively. Nitrogen application @ zero and 120 kg/ha per season continuously over a period of five years, decreased the grain yield @ 1.47 and 1.28 g/ha/year, respectively. But application of N @ 40 kg/ha during the same period increased grain yield 6 1.22 q/ha/year. The productivity of plots applied with N @ 80 kg/ha remained stable. The study clearly revealed the possibility of skipping P for four years and K for seven years in soils containing medium amounts of these nutrients. Application of N at optimum dose is important to maintain the long term productivity of a rice based cropping system involving rice-rice-fallow.Item Studies on foliar and soil application of fertilizers on cashew (Anacardium occidentale)(Kerala Agricultural University, 1972) Sundaresan Nair, P; George, C M; Tajuddin, EItem Effect of lime and magnesium on the yield and quality of groundnut in the acid soils of Kerala(Kerala Agricultural University, 1970) Tajuddin, E