Response of N, P and K by Acacia nilotica Seedlings

Greenhouse experiments were carried out to see the response of N, P and K by A. nilotica seedlings grown on sandy loam New Forest soils. Treatments consisted of 0,50, 100, 150 and 200 ppm N (100 ppm P₂,O₅, and 50 ppm K O as basal dose); 0,50,100 and 150 ppm P₂,O₅, (100 ppm N and 50 ppm K₂O as basal dose); 0, 25, 50 and 75 ppm K₂O (100 ppm each of N and P₂O₅, as basal dose) and factorial combinations of 0 and 100 ppm N, 0 and 100 ppm P₂O₅, and 0 and 50 ppm K₂O. A. nilotica seedlings responded to N applied alone or in combination with P and K. Application of P and K applied alone or in combination decreased the growth, yield and fertilizer use efficiency in Ihe absence of N. The best treatment of 100 ppm N, 100 ppm P₂O₅, and 25 ppm K₂O was observed.