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Subject: Agricultural Meteorology × Author: Harmanpreet × End date: 2023 × Start date: 2023 ×
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    Quantification of crop bio-physical parameters in rice (Oryza sativa L.) varieties under different establishment methods using CROPWAT model
    (Punjab Agricultural University, 2023) Harmanpreet; Som Pal Singh
    A field experiment was conducted at the Research Farm, Department of Climate Change and Agricultural Meteorology, PAU, Ludhiana and Rice Section of Department of Plant Breeding &Genetics during kharif 2022. Three rice varieties (PR 121, PR 126, PR 128) of different age seedlings (20 days,30 days and 40 days) were transplanted on different establishment methods-flat and ridge transplanting method. The experiment was laid out in factorial Split Plot Design. The results indicated that PAR interception was higher in ridge planting method as compared to flat method of transplanting with 30 days old age seedlings. The grain yield was recorded highest in ridge (73.8 q/ha) as compared to the flat method (71.0 q/ha). In the case of varieties, the highest grain yield was recorded in PR 126 (77.0 q/ha) followed by PR 128 (73.4 q/ha) and PR 121 (66.9 q/ha). In the case of 30 days old age seedlings transplanted (74.2 q/ha) were recorded as highest followed by 20 days old age seedlings (73.9 q/ha) and then 40 days old age seedlings (69.1q/ha). Total water productivity was recorded higher in ridge method of transplanting (0.42 kg/m3) as compared to flat method of planting (0.37 kg/m 3 ). In case of genotype, total water productivity recorded higher in PR 126 (0.46 kg/m3) followed by PR 128(0.38 kg/m3) and PR 121 (0.34 kg/m3) and in case of old age seedlings,30 days old age seedlings recorded highest water productivity (0.41 kg/m3) followed by 20 days and 40 days old age seedlings.