Thesiss

Although the main limitation of crop production in the arid and semiarid regions of Morocco is lack of sufficient rainfall, phosphorus (P) nutrient deficiencies also are major obstacle to maximum crop production. Fertilizer management is an important step in sustainability of cr…

Phosphorus fertilizer recommendations for wheat in Morocco are based on the climatic regions disregarding soil P fertility. An improved fertilizer program must be based upon the soil test level. This research was conducted in order to select the best P soil test and calibrate it…