Effect of N and P on growth and flowering of tuberose (Polianthes Tuberosa L.)

Abstract

In an experiment to standardize the requirement of N and P for optimum growth and yield of flowers and bulbs of tuberose cv. Double, the treatment 30 : 30 : 15 g nVJ of NPK recorded maximum vegetative growth of the plants. The yield of loose flowers was also high with the same fertilizer treatment, though higher doses of P gave the highest yield, the yield of both the treatments being on par. Taking into account the use of minimum inputs to achieve maximum yield, 30 : 30 : 15 g m"~ of NPK was found to be the best. However, for cut flower purpose a dose of 15 : 90 : 15 g m~~ of NPK was found suitable. The yield of bulbs was maximum in case of the treatment 30 : 60 : 15 g rrr of NPK. A significant positive correlation was recorded between single flower weight and yield of loose flowers.