Effect of N P K on growth and yield of mango (Mangifera indica L.)

The present investigation was carried out at Fruit Research Station Kuthulia Rewa (M.P.) during the years 2002–09. The treatments comprised of three doses of nitrogen (0, 100, 200g/plant per year), phosphorus (0, 50, 100g/plant/year) and potash (0, 100, 200g/plant/year) on twenty four years old plant of mango variety Langra. All the treatments were replicated three times in randomised block design. Experimental findings revealed that the growth parameters differed significantly. Maximum tree height (7.43m), canopy (6.33m), and spread N-S (11.55m), E-W (11.80m) were recorded in the treatment in which nitrogen phosphorus and no potash were applied (200g N,100g P,0 K) followed by N2P2K2(200 gN:100gP:200gK) while minimum in control. 0n the basis of cumulative yield (2003–09) maximum yield of 52.67kg/tree was recorded in the treatment N2P1K1 (200N:50P:100K) which was significantly superior to other treatments. This is followed by the treatment N2P2K1 (200N:100P:100K) which gave yield of 51.01 kg/plant which was at par with N2P1K1 (100N:50P:100K). Minimum yield (17.02kg/treatments) was noted in control (N0P0K0). Maximum benefit cost ratio (B:C) was observed in N2P1K1 (200N:50P:100K) of 3.26 followed by N2P2K1 (200N:100P:100K) of 3.15.