Browsing by Author "Ramachandran Nair, V"
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ArticleItem Open Access Effect of growth regulators on the yield of tomatoes(Kerala Agricultural University, 1974) Manikantan Nair, P; Mohanakumaran, N; Ramachandran Nair, V; KAUArticleItem Open Access Effect of growth regulators on the yield of tomatoes(Kerala Agricultural University, 1974) Manikantan Nair, P; Mohanakumaran, N; Ramachandran Nair, V; KAUArticleItem Open Access Efficiency of potassium schoenite as a source of potassium to rice(Kerala Agricultural University, 1979) Alexander, V T; Ramachandran Nair, V; Ravindran Nair, K K; KAUThesisItem Open Access Fertilizer management in rice variety cheradi(Department of Agronomy, College of Agriculture, Vellayani, 1986) Vaijayanthi, C P; KAU; Ramachandran Nair, VTo evolve a suitable fertilizer management schedule for rice variety Cheradi, an experiment was conducted at State Seed Farm, Kottarakka, Quilon District during the second crop season of 1984-85. The treatment consisted of four graded levels of fertilizers (40: 20: 20, 50:25:25, 60:30:30 and 70:35:35 kg NPK/ha) and four times of application of nitrogen. The experiment thrice in a Factorial Randomised Block Design. Growth characters such as plant height, number of tillers/m2, LAI, CGR and dry matter production were the highest at the level of 70: 35: 35 kg NPK/ha. Interaction between levels of fertilizers and time of application of nitrogen influenced the LAI at active tillering stage. The LAI was the highest when 70 kg nitrogen was given 50% as basal, 25% each at active tillering and panicle initiation stages.ThesisItem Open Access Nitrogen management in rice variety Lekshmi (Kayamkulam-I)(Department of Agronomy, College of Agriculture, Vellayani, 1985) Surendran, K; KAU; Ramachandran Nair, VTo evolve a suitable nitrogen management schedule for rice variety Lakshmi an experiment was conducted in a cultivator's field at Attingal, Trivandrum, during the grand mundekan (ragi) season of 1983-34. The treatment a consisted of four graded levels of nitrogen ranging from 20 to 80 kg/ha and four times of application with one control. The experiment was replicated thrice in a Factorial Randomised Block Design. Growth characters such as plant height, tillering, leaf area index, crop growth rate end dry matter production were the highest at 80 kg IT/ha* Height, leaf area index end dry matter yield were the highest with three splits, but tiller production and crop growth rate were the highest with two splits of nitrogen. Application of 80 kg H/ha gave the highest number of panicles, where as number of filled grains aid spikelsts were maximum with 40 kg nitrogen. The highest weight of thousand grains and panicles on! the lowest percentage of unfilled grains were observed with 60 kg nitrogen. Grain end straw yields wore tho highest with 60 end 80 kg E/ha respectively. Application, of nitrogen, at 50,25 and 23 per-cant at transplanting, active tillering end panicle initiation stages respectively produced the highest grain and straw yields Application of 80 kg N/ha in equal splits at active tillering end penicle initiation at age a recorded maximum grain protein content Nitrogen use efficiency was the highest with 20 kg nitrogen and it gradually decreased with increased rates Nitrogen phosphorus and potassium apt eke increased with incremental doses of nitrogen at all growth stages. Three split application recorded the highest nitrogen end potassium uptake at active tillering end panicle initiation Three split application of 60 kg N/ha as 50%, 25%and 25% at transplanting active tillering and panicle initiation stages respectively recorded the highest not return and cost benefit ratio.ArticleItem Open Access Performance of cowpea varieties under varying levels of phosphorus in red-loam soils(Kerala Agricultural University, 1976) Mohamed Kunju, U; Ramachandran Nair, V; Manikantan Nair, P; Sadanandan, N; KAUArticleItem Open Access Performance of ginger varieties in Vellayani, Kerala(Kerala Agricultural University, 1976) Ramachandran Nair, V; Sasidhar, V K; Sadanandan, N; KAUArticleItem Open Access Performance of ginger varieties in Vellayani, Kerala(Kerala Agricultural University, 1976) Ramachandran Nair, V; Sasidhar, V K; Sadanandan, N; KAUArticleItem Open Access Rainfall distribution pattern at Vellayani(Kerala Agricultural University, 1975) Ramachandran Nair, V; Mohamed Kunju, U; KAU