Tewari, Salil K.Soman, Divya2019-02-092019-02-092018-05http://krishikosh.egranth.ac.in/handle/1/5810094274The field experiment was carried out in Agroforestry Research Centre of G.B. Pant University of Agriculture and Technology, Pantnagar, Udham Singh Nagar, Uttarakhand during the rabi season for 2016-17 to study the yield and yield attributes of wheat and barley under poplar based agroforestry system. Eight different treatments in poplar (poplars of different planting stocks) were arranged in randomized block design with three replications. Wheat and barley crops were sown under poplar plantation and in open field. Growth parameters and yield attributes of wheat and barley significantly reduced in treatments of agroforestry system except T1 and T2 than the open system. Poplars of normal ETP origin and 2 years ETP origin outperformed the other treatments. Among different treatments of agroforestry biological yield was found highest in T1 plot (9101.67 kg/ha for wheat and 11907 kg/ha for barley), grain yield was found highest in T1 plot (3715 kg/ha for wheat and 3711.67 kg/ha for barley), straw yield was found highest in T1 plot (5386.67 kg/ha for wheat and 8196 kg/ha for barley). The average tree growth parameters viz., tree height, diameter at breast height and volume showed an increased trend during the period of study. Among different planting stocks T1 (1 year old ETP), T2 (2 years old ETP) and T7 (Cutting from ETP) were found at par with each other and significantly higher growth for height. Diameter and volume growth showed non-significant differences among the different planting stocks. Different soil parameters such as soil EC, organic carbon, available soil nitrogen, phosphorus and potassium was higher under poplar based agroforestry system as compared to open farming system. Soil pH did not show significant difference among two farming systems. Thus, the study indicated that poplars of normal ETP and 2 years ETP origin should be incorporated in agroforestry system to improve the productivity and growth of crops under agroforestry.ennullThesis