Kingdom of Saudi Arabia - Hakma Research Station, Wadi Jizan agricultural development project. Annual report of experimental work, season 1974-75

agronomia agronomie agronomy arachide arroz cacahuete control de enfermedades control de insectos coton cotton disease control ensayos de variedades ferme pilote fertilisation fertilizer application fincas experimentales fruit crops frutales groundnuts hortalizas (plantas) insect control irrigation mais maize oilseeds pilot farms remolacha azucarera rice riego riz semillas oleaginosas soja sorghum soybeans sugarbeet variedades varieties variety trials vegetable crops