2. Institutional Publications
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Item Studies on the rate and time of top dressing nitrogen for rice 'var. Jaya(Kerala Agricultural University, 1972) Paul Mathew, M; Sadanandan, NItem Protein content of grain as affected by the application of urea and neam coated urea to rice variety – triveni(Kerala Agricultural University, 1974) Abraham, C; Sadanandan, N; Sasidhar, V KItem Effect of different levels of nitrogen and phosphorus on the uptake of phosphorus by rice variety - triveni(Kerala Agricultural University, 1974) Alexander, K M; Sadanandan, N; Sasidhar, V KA field experiment was undertaken during the third crop season of 1971 to study the effect of different levels of nitrogen and phosphorus on the uptake of phosphorus by the rice variety 'Triveni'. It was found that with increasing levels of nitrogen, the total uptake of phosphorus increased during all the growth stages of the crop. Similarly nitrogen phosphorus interaction significantly increased the phosphorus uptake at harvest. Different levels of phosphorus had no significant effect on the uptake of phosphorus during any of the growth stages of the crop.Item Studies on the comparative performance of granular weedicides on rice(Kerala Agricultural University, 1975) Vikraman Nair, R; Sadanandan, NThe field experiment was conducted in the farm attached to the Agricultural College, Vellayani frr a period of two seasons to evaluate the performance of three granular weedicides on the lethality of weeds of rice and on the growth and yield of rice. There was no effect on the growth and yield of rice or on number and dry weight of weeds. The differences between unweeded control and continuously hand weeded treatment also remained nonsignificant both in terms of rice yield and weed growth. This points to the fact that continuous water logging itself was effective in keeping down weed growth and in preventing the consequent effect on rice yield. There was no apparent toxicity of the chemicals on the existing weed species of the area.Item Effect of multiple cropping on the organic carbon status of upland alluvial soils(Kerala Agricultural University, 1975) Sadanandan, N; Mahapatra, I CA field experiment at (he Central Rice Research Institute. Cultack. Orissa State on multiple cropping conducted during the years 1967.68 and 1968-69 showed that there was a decrease in organic carbon content of soil in all cropping patterns after each cycle, the maximum decrease being noticed in continuous cultivation of rice, i. e. rice-rice cropping pattern. Among individual crops there was an increase in organic carbon content after potato and maize crops, whereas, there was a decrease after dalua and kharif rice crops.Item Effect of split application of potassium on the yield and yield attributing characters of rice variety 'triveni'(Kerala Agricultural University, 1976) Sadanandan, N; Sasidhar, V KAn experiment was conducted at the Agricultural College and Research Institute, Vellayani, Kerala to study the effect of split application of potash on the yield of rice veriety 'Triveni' during the first and second crop seasons of 1972. It was found that there was no advantage by split dose application of potassium for the short duration variety of rice 'Triveni'. A single basal dose application of 20 kg K,O per hectare will be sufficient to get high yields.Item Studies on the effect of urea and neem cake coated urea on the nitrogen uptake of rice variety - triveni(Kerala Agricultural University, 1976) Abraham, C; Sadanandan, N; Sasidhar, V KAn experiment to study the effect of urea and neem cake coated urea on the nitrogen uptake of rice variety 'Triveni' was conducted at the College of Agriculture, Vel!aya»i, Kerala during viruppu season of 1973. From the study it was found that nitrogen uptake was increased with stages of the plant. At all stages, higher levels of nitrogen increased the nitrogen uptake by the plants. At maximum tillering, panicle initiation and flowering stages, the methods of application did not influence nitrogen uptake. At harvest, the total nitrogen uptake was significantly influenced by methods of application. The split application and complete basal application of neem cake coated urea were significantly superior to application of complete basal urea.Item Studies on the response of rice variety triveni to phosphorus application(Kerala Agricultural University, 1976) Sadanandan, N; Sasidhar, V KItem Effect of zinc in combination with nitrogen on the yield and yield attributes of rice var. triveni(Kerala Agricultural University, 1977) Kabeerathumma, S; Sasidhar, V K; Sadanandan, N; Koshy, M MItem Protein content of paddy grains as influenced by slow release nitrogen fertilisers(Kerala Agricultural University, 1977) Oommen, M; Sadanandan, N; Mohamed Kunju, U