Agronomy of irrigated groundnuts (Arachis hypogaea) [Sowing dates and cultivars; watering intervals and levels of phosphorus; fertilizer in-puts; physiological basis of variation in yield; weed control, Sudan]

arachis hypogaea arrosage control de malezas cultivar cultivars engrais ensemencement fertilizers fisiologia fosforo lutte anti-mauvaise herbe phosphore phosphorus physiologie physiology regadura rendement rendimiento siembra sowing watering weed control yields