TY - JFULL AU - Hirich A. and Rami A. and Laajaj K. and Choukr-Allah R. and Jacobsen S-E. and El youssfi L. and El Omari H. PY - 2012/2/ TI - Sweet Corn Water Productivity under Several Deficit Irrigation Regimes Applied during Vegetative Growth Stage using Treated Wastewater as Water Irrigation Source T2 - International Journal of Agricultural and Biosystems Engineering SP - 42 EP - 50 VL - 6 SN - 1307-6892 UR - https://publications.waset.org/pdf/2347 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 61, 2012 N2 - Yield and Crop Water Productivity are crucial issues in sustainable agriculture, especially in high-demand resource crops such as sweet corn. This study was conducted to investigate agronomic responses such as plant growth, yield and soil parameters (EC and Nitrate accumulation) to several deficit irrigation treatments (100, 75, 50, 25 and 0% of ETm) applied during vegetative growth stage, rainfed treatment was also tested. The finding of this research indicates that under deficit irrigation during vegetative growth stage applying 75% of ETm lead to increasing of 19.4% in terms of fresh ear yield, 9.4% in terms of dry grain yield, 10.5% in terms of number of ears per plant, 11.5% for the 1000 grains weight and 19% in terms of crop water productivity compared with fully irrigated treatment. While those parameters in addition to root, shoot and plant height has been affected by deficit irrigation during vegetative growth stage when increasing water stress degree more than 50% of ETm. ER -