Comparison of Micrometeorological Parameters in Wheat Crop under Open and Poplar Plantation

Abstract

The present study was conducted at the Research Farms, Department of Climate Change and Agricultural Meteorology and Department of Forestry and Natural Resources, Punjab Agricultural University, Ludhiana, during the rabi season of 2021-22. The experiments were conducted under split plot design with 3 replications having three dates of sowing (20th October, 5th November and 20th November) and 2 disease inoculation levels (Inoculated and un-inoculated)in main plots with three varieties (HD 2967, PBW 725 and HD 3087) in sub plots. The experiments were conducted under open conditions and under poplar plantation. The micrometeorological parameters like photosynthetically active radiation (PAR), canopy temperature and relative humidity within crop were observed at periodic intervals under both growing environments. Among micrometeorological parameters, Incident PAR (1280 Watt/ m2 in open and 910 Watt/ m2 under poplar plantation) and temperature inside the canopy (25.8ºC in open and 24.6ºC under poplar plantation) was maximum in 20thNovember sowing. While, relative humidity (56.3% in open and 59.0 % under poplar plantation) was maximum in 20th October sown crop. The grain yield was maximum (38.3 q/ha) in 20th October sowing followed by 5th November (37.0 q/ha) and 20th November (33.5 q/ha) sown crop under open conditions. Whereas, under poplar plantation, grain yield was comparatively lesser than open conditions. The grain yield was maximum (27.6 q/ha) in 20th October sowing followed by 5th November (26.0 q/ha) and 20th November (21.4 q/ha) sown crop under poplar plantation. Among different varieties, PBW 725 gave higher grain yield under open and poplar plantation conditions.