Appraisal of different doses of nitrogen fertilizer on growth and yield of eggplant (Solanum melongena L.)

Abstract

Nitrogenous fertilizer could improve the growth, yield and yield contributing characters of eggplant. The present investigation was aimed to find out the effects of different doses of nitrogen fertilizer on growth and yield of eggplant (Solanum melongena L.) which was conducted at Noakhali Science and Technology University during November, 2018 to March, 2019. The experiment comprises on eggplant local variety named ‘Tal begun’. There were four treatments of urea viz., 0, 12, 21 and 30 g urea pot-1 and the experiment were laid out in completely randomized design (CRD) with three replications. Different parameters were undertaken for the study like plant height (cm), number of leaves per plant, number of branches per plant, number of flowers per plant, number of fruits per plant, individual fruit weight (g). The variety showed significant variation for different doses. Among all treatments, 30 g urea pot-1 showed highest vegetative characteristics such as plant height (49.67 cm), number of leaves per plant (32.67), number of branches per plant (7.33) at 60 DAT and lowest vegetative characteristics was found from 0 g urea pot-1. On the other hand, the application of 21 g urea pot-1 showed medium vegetative characteristics and highest reproductive characteristics such as number of flowers per plant (6.67), number of fruits per plant (6.67), individual fruit weight (138.67 g). Therefore, the results showed that, nitrogen fertilizer strongly influenced vegetative and reproductive characteristics of eggplant. The findings of this study suggested that 21 g urea pot-1 performed the best and it will be suitable for eggplant production.