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ThesisItem Open Access Study of microclimate in Pearl millet genotype under different growing environments(CCSHAU Hisar, 2022-07-26) Harshana; Anil KumarField experiment entitled “Study of microclimate in pearl millet genotype under different growing environments” was conducted during kharif season (2020 and 2021) at research farm, Department of Agricultural Meteorology, CCS HAU, Hisar which is located at 29° 10´ N latitude, 75° 46´ E longitude with 215.2 m altitude. The experiment was carried in a factorial RBD design that comprised of three sowing dates viz. D1 – 2nd fortnight of June; D2 – 1st fortnight of July and D3 – 2nd fortnight of July; and three different genotypes viz. V1 (GHB 558), V2 (HHB 67 improved) and V3 (HHB 272) during crop season 2020 and 2021, respectively with four replications. Crop growth and development i.e. the phonological phases, plant height, no. of tillers/ plant, leaf area index, CCI and dry matter accumulation were higher in D1 and V1 under different growing environments and genotypes. Among all the treatments, D1 recorded higher grain (3726 and 3576 kg/ha ) and biological yields (13863 and 13442 kg/ha) ) during crop season 2020 and 2021, respectively. The higher grain and biological yields were recorded during crop season 2020 as compared to crop season 2021. The highest grain and biological (3767 and 13444 kg/ha during crop season 2020) and (3642 and 13043 kg/ha during crop season 2021) were recorded in V1, respectively. Maximum soil moisture content was recorded in early sown crop during both the crop seasons. 2021 crop seasons had high soil moisture content as compared to crop season 2020. Among different growing environments, morning soil temperature was observed significantly higher in D1 at 5 and 10 cm depth and lower was in D3 at 5 cm depth during both the crop seasons. Among different growing environments, the higher chlorophyll content value was significantly observed in D1 as compare to other sowing dates, highest intercepted PAR were observed in D1 sown crop at various growth intervals during both crop seasons. Among genotypes during both crop seasons crop at various growth intervals, V1 (GHB 558) received higher intercepted PAR. All the agrometeorological indices were consumed more by D1 at different phenophases among different growing environments during both the crop seasons. Among genotypes, the indices were consumed highest by V1 (GHB 558). Among micrometeorological studies, the absorbed PAR was higher in D1 and was maximum in V1 (GHB 558) under varying growing pearl millet genotypes during both crop seasons. The net radiation was higher at anthesis stage. The higher canopy temperature Tc was observed late sown crop during two years study. The temperature profiles were lapse within the canopy throughout the day. The relative humidity profiles were lapse throughout the day inside the crop canopy but profiles were near iso-humic in the morning at 9:00 hours at different crop growth stages during both crop seasons.
