Scheduling Irrigation for Wheat Crop in Light Soils of Rajasthan

Abstract

Experiment was conducted on wheat crop in Iysimeters to determine water requirement and scheduling of irrigation. It was found that yield of wheat per unit area per unit water was better when Irrigated at 40 per cent available soil moisture than tbat of when irrigation at 30 per cent available soil moisture. Total evapotranspiration in the season when irrigated at 40 per cent available soil moisture was 366 mm and in all 11 Irrigation (372 mm) were needed including pre-sowing irrigation. More water was needed during irrigation and growth, flowering and milk stage. Each irrigation of 32 mm depth should be applied after 60 mm of cumulative pan evaporation for growth stages of germination, tillering dough and maturity. In all others it should be applied at 40 mm of cumulative pan evaporation.