Effect of nitrogen, phosphorus and potassium on growth and flowering of cymbidium

The experiment was conducted to optimize the nitrogen, phosphorus and potassium requirement of Cymbidium hybrid “Show Girl Cook's Bridge” grown in the polyhouse. The treatments consisted of spraying of four combinations of N:P:K (5:5:5, 10:5:5, 15:5:5 and 20:5:5) each at three concentrations (0.1%, 0.2% and 0.3%) and a control (distilled water). The results shows that application of 10 N : 5 P: 5 K at 0.1 % concentration as foliar spray at fortnightly intervals produced maximum length (51.96 cm) and number of leaves (6.69). While number of shoot increased to a maximum of 3.00 in 20N: 5 P:5 K at 0.2 concentration, number of pseudo bulb/clump was maximum (6.00) in 20 N: 5 P: 5 K at 0.3% concentration. Spraying 20 N: 5 P: 5 K at 0.3% concentration resulted in early flowering having two numbers of spike / pseudobulb with a length of 45.00 cm and 5.50 numbers of flower/ spike.