Some factors affecting soil water requirements of corn and soybean in the Delta soils [Egypt]

agua de riego contenido de humedad contenido proteico cultivo intercalado culture intercalaire eau d'irrigation fertilizantes nitrogenados intercropping irrigation water moisture content necesidades de agua nitrogen fertilizers paille paja peso poids production de semences protein content rendement rendimiento seed production soja soybeans straw teneur en eau water requirements weight yields zea mays