Author(s):

Ravikant Chandrvavanshi, Dr. G Kar, Dr. HV Puranik and Parshottam Kumar Sinha

Abstract: Crop water requirements of short duration rice crop in of Khurda district of Bhubaneswar computed with CROPWAT 8.0 using the meteorological parameters. This paper estimated the crop reference and actual evapotranspiration (ETO and Etc) respectively and the irrigation water requirement of rice (Oryza sativa L.). The six crop growth stages (nursery, land preparation, initial, development, mid-season, late season) and three decades (I, II, III) were considered for this crop. Crops was planted during 2016 kharif season. The study shows that crop water requirement for entire crop growth period for Kandagiri variety at Deras farm is 419.2 mm. The crop water requirement was partially met from effective rainfall (304.3 mm) and the remaining amount of water was given to crop through ground water source. The gross irrigation demand was 787.9 mm and total net irrigation was 551.6mm during crop growth period. During initial stage of crop, irrigation requirement comes around 278.8 mm for nursery and land preparation. The effective rainfall from nursery operation (July 1 decade) to initial stage (August 3 decade) was only 124.7 mm. The difference between irrigation water requirement amount and effective rainfall was about 154.7 mm which was supplied through ground water.

Pages: 540-542  |  1273 Views  358 Downloads

Download (524KB)