Effect of Nitrogen and Phosphorus levels on Physiological, Biochemical parameters and Economics of Greengram in Eucalyptus tereticornis based Agrisilviculture system

A field experiment was conducted on sandy loam soil to study the response of various fertilizer levels on Vigna radiata (L.) in 5–6 year old Eucalyptus tereticornis sm. based agrisilviculture system. On the basis of average of two crop seasons, 32 and 24% less photosynthesis, 40 and 51% less transpiration, 33 and 31% less stomatal conductance at 40 days after sowing and at harvest, respectively, were recorded under eucalypts sown greengram than sole greengram. Poor yield attributes of greengram under eucalypts resulted in 53 and 50% reduction in grain and stover yield, respectively in greengram under Eucalyptus tereticornis as compared with sole greengram. Higher returns and cost/benefit ratio were recorded in agrisilviculture system than sole greengram.