Bana, O.P.S.Jayaswal, Sanjay Kumar2019-11-242019-11-242005-08http://krishikosh.egranth.ac.in/handle/1/5810136046A field experiment was conducted during the rabi season of 2004-05 at AICRC on agroforestry site, Horticulture Research Centre, G.B. Pant University of Agriculture and Technology, Pantnagar to study the production potential of different crops under varying density of poplar in agrisilvicultural system. The soil of experimental site was clay loam (0-15cm) in texture, having range of organic carbon (0.42-0.62%), available nitrogen (192.2-265.8 kg/ha), available phosphorus (20.4-34.6 kg/ha), available potash (102.9-158.4 kg/ha) and soil pH (7.86-6.90). Treatments consisted of four tree spacings (control, 5m×8m, 5m×4m and 5m×2m)/densities (0, 250, 500 and 1000 trees/ha) as main plot and four pulse crops (pea, lentil, fababean and chickpea) as subplot. The experiment was laid out in Spilt Plot Design with four replication. Observations were recorded on growth and development at periodical intervals, yield and yield attributes and protein content in grains. The results indicated that growth and biomass parameters showed wide variations due to tree spacings, pulse crops and their interaction. Although, the maximum germination per cent, plant population, plant height, number of nodules and dry weight, number of primary branches and dry matter accumulation were recorded under control (sole crop) with varying degree of reductions under increase tree densities. The mean crop growth rate, leaf area index, and relative leaf growth rate were recorded to be better in sole crop, but the mean relative crop growth rate, net assimilation rate (during 60-80 days period) and protein content in grains had been better under poplar trees. The maximum biological, straw and grain yield of pulse crops recorded under control (sole crop), which decreased under various tree spacing/densities with varying magnitudes among crops. The grain yield of pulse crops was maximum under control, which decreased significantly with decreased tree spacings from control to 5m×8m/5m×4m and then to 5m×2m in pea and fababean from control to either 5m×8m, 5m×4m or 5m×2m in lentil and from control to either 5m×8m or 5m×4m then to 5m×2m in chickpea. Thus, it may be concluded that based on the relative losses in corps, chickpea and lentil may be preferred for inter planting with poplars. The reduction in yields under trees may be well compensated through volume increment in poplar trees.ennullThesis