Browsing by Author "Thomas Varghese, P"

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Effect of different levels of nitrogen and phosphorus on the uptake of nitrogen and phosphorus at various stages of growth of sunflower variety peredovik
(Kerala Agricultural University, 1976) Thomas Varghese, P; Sadanandan, N; Vikraman Nair, R
An experiment was conducted at the College of Agriculture, Vellayani to study the effect of graded doses of nitrogen and phosphorus on the uptake of nitrogen and phosphorus at three growth stages of sunflower viz 20th day after planting, flowering and harvest. The effect of nitrogen up to 90 kg/ha resulted in significant linear increase in nitrogen uptake at all the stages except on the 20th day after planting. Phosphorus at 90 kg level showed significance in enhanced nitrogen uptake at the 20th day of planting but not later. While for the phosphorus uptake, significant effect was noticed due to increased levels of application of nitrogen at all the three stages, levels of applied phosphorus did not bring about significant changes in the uptake of this nutrient Increase in uptake of these nutrients showed a linear relationship with the magnitude of growth of the plants.
Effect of nutrition as Influenced by irrigation on growth and yield of oil palm (Elaeis guineensis Jacq)
(Department of Agronomy, College of Agriculture, Vellayani, 1994) Thomas Varghese, P; Sreedharan, C
Study on leaf area index and net assimilation rate of sunflower (Helianthusannuus L.) variety peredovik as affected by graded doses of nitrogen and phosphorus
(Kerala Agricultural University, 1976) Thomas Varghese, P; Sadanandan, N; Vikraman Nair, R
Study on the yield and yield attributes of sunflower variety 'peredovik' as affected by graded doses of nitrogen and phosphorus
(Kerala Agricultural University, 1976) Thomas Varghese, P; Sadanandan, N; Vikraman Nair, R
A field experiment was conducted during the year 1973 to study the effect of graded doses of nitrogen and phosphorus on yield of seeds and oil content of sunflower variety 'Peredovik'. Nitrogen application up to 90 kg/ ha helped in increasing the total yield of seeds but reduced the percentage of oil. Phosphorus application was found to have no significant influence.