Maximizing crop water productivity from the water unit

Abstract

Egypt is currently suffering from the vast increase in population that is increasing water consumption whether for domestic use or by other sectors especially, the agricultural one. Therefore, the main objective is study the effect of the spraying antitranspirat compounds (Na2CO3 MgCO3 and K2SO3 ) at different rates (0, 2, 4; 6%) under water stress conditions (60; 80% from ETo) on peanut yield crop and yield quality. The experiment was conducted under drip irrigation system in the sandy soils of the experimental Farm of the National Research Centre, El-Nubaria, El-Behera governorate. Resulted data indicated that the highest values were observed after spraying K2SiO3 at 6 % and values increased with increasing rates from 0 to 6%. While the lowest values were recorded at control (Na2CO3). MgCO3 and K2SiO3 have a positive effect on oil %, Na2CO3 for protein and K2SiO3 for NPK content. Water crop productivity(CWP) increased in the current experiments in the following order of 60>80 % ETo despite the reduction in crop yield. CWP values under 80 % water stress were lower than 60 %. Treatment 60 % water stress was superior and scored 17 % more than 80 % water stress.