Application of different N, P, K, levels on growth and yield of green gram (Vigna radiate L.) under Jatropha (Jatropha curcas) based agroforestry system

A field experiment was conducted at the Forest Nursery, college of forestry, SHUATS, Allahabad, India during the kharif 2017-18 to evaluate the “application of different N, P, K levels on growth and yield of green gram (Vigna radiata L.) under jatropha (Jatropha curcas) based agroforestry system”. The experiment consisted of 9 treatments ie., 3 levels of nitrogen (50%,75% and 100%), 4 levels of Phosphorous (25%, 50%, 75% and 100%) and 4 levels of potassium (25%, 50%, 75% and 100%), laid out in Randomized Block Design and replicated thrice. The study revealed that the treatment T1:100% Nitrogen + 100% Phosphorous + 100% potassium gave higher growth parameters viz., plant height (46.42), number of primary branches (12.50), number of secondary branches (9.40 ), number of trifoliate leaves plant-1(11.16) and number of root nodules plant-1 (14.46) and higher yield attributes viz., number of pods plant-1 (14.76), number of grains pod-1 (10.80), grain yield(7.48 q ha-1), stover yield (16.63 q ha-1) and consequently, harvest index (45.30).