2. Institutional Publications
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Item Crude protein content of guinea grass and component crops under different spacings(Kerala Agricultural University, 1979) Krishna Raj, P; Sadanandan, N; Nair, K P M; Sasidhar, V KItem Note on the effect of various herbicides on the yield and yield attributing characters of two high yielding varieties of rice(Kerala Agricultural University, 1978) Ravindran, C S; Nair, K P M; Sasidhar, V KItem Performance of sunflower varieties under graded doses of nitrogen in redloam soils of Kerala(Kerala Agricultural University, 1978) Salam, M A; Sadanandan, N; Nair, K P M; Mohamed Kunju, UAn experiment using three varieties of sunflower and three levels of nitrogen was conducted at the College of Agriculture, Vellayani during 1974 in order to assess the performance of sunflower varieties under different levels of nitrogen. The varieties tried were EC.68413, EC. 6841 4 and Sunrise selection. The levels of nitrogen were 40 kg, 90 kg and 120 kg per hectare. The results indicated that there was no significant difference among the varieties in plant height, total dry matter production, leaf area index net assimilation rate, lodging, head diameter, number of seeds per head, percentage of filled grains per head, 1000 seed weight and yield of seeds. But, there was significant difference in the yield of atover and oil and protein contents of seeds among them. The effects of incremental doses of nitrogen were significant in head diameter and yield of seeds. Maximum yield of 1887.1 kg seeds per hectare was obtained at 80 kg nitrogen per hectare.Item Effect of different plant densities on sunflower varieties in red loam soils(Kerala Agricultural University, 1978) Salam, M A; Sadanandan, N; Nair, K P M; Mohamed Kunju, UAn experiment was conducted at the College of Agriculture, Vellayani to study the effect of different spacings on the yield of sunflower varieties. The results revealed that closer spacing decreased the head diameter and number of seeds per head, but significantly increased the total yield of seed. Closer spacing of 30x20 cm gave a maximum yield of 2163.1 kg seeds per hectare. The varieties did not show any difference in yield potential.Item Economics of inter cropping in guinea grass (Panicum maximum J.)(Kerala Agricultural University, 1979) Krishnaraj, P; Sadanandan, N; Nair, K P M; Sasidhar, V KItem Studies on the yield and quality of guinea grass (Panicum Maximum, J) as affected by different spacings with and without legumes as intercrops(Kerala Agricultural University, 1979) Krishna Raj, P; Sadanandan, N; Nair, K P M; Sasidhar, V KItem Critical periods of weed competition in a short duration rice variety 'triveni'(Kerala Agricultural University, 1980) Abraham varughese; Nair, K P MIn studies on the critical periods of crop-weed competition a in short duration rice variety 'Triveni,' carried out at the College of Agriculture, Vellayani, during the second crop season of 1976-77, it was found that the critical period of crop-weed competition lies between 21 and 40 days after transplanting. During i his period, the weed emergence and dry matter accumulation were maximum. At least a weed free condition of 21 -30 days in the critical period of 21-40 days, is essential to obtain good yields.Item Effect of graded levels of phosphorus and potassium on nodulation of two varieties of groundnut (Arachis hypogaea L.)(Kerala Agricultural University, 1980) Purushothaman Nair, N; Sadanandan, N; Nair, K P M; Mohamed Kunju, UItem Optimum and economic levels of phosphorus and potassium fertilisation for groundnut (Arachis Hypogaea L.)(Kerala Agricultural University, 1981) Purushothaman, N; Sadanandan, N; Sasidhar, V K; Nair, K P MItem Effect of different planting methods and seed sizes on the growth and yield of colocasia (Colocasia Esculenta (L.) Schott)(Kerala Agricultural University, 1981) Kamalam Joseph; Mohammed Kunju, U; Nair, K P MA field experiment was conducted during 1978-79 at the Agricultural College Farm, Vellayani, Kerala, to study the effect of different methods of planting (pit, ridge and furrow) and sizes of planting materials (small cormels of 15-25 g, size, medium cormels of 35-45 g size, large cornrts of 55-65 g size and corms of 60-70 g size) on the growth and yield of colocasia (Colocasia escufenta (L.) Schott. Among the different methods of planting, furrow method hastened germination and increased the plant height, leaf area, LAI, average weight of corm and total tuber yield. Among the different sizes of planting material, larger size' groups hastened germination and increased the plant height. Average corm weight and total tuber yield were the maximum in the case of medium sized cormels.