GROWTH AND YIELD OF BRINJAL AS INFLUENCED BY DIFFERENT LEVELS OF POTASSIUM

Abstract

A field experiment was conducted at horticulture farm of Sher-e- bangla Agricultural University, Dhaka during the period from March to July 2022 to investigate the growth and yield of brinjal as influenced by varieties and potassium. The experiment consisted of two factors and followed by randomized complete block design (RCBD) with three replications. Factor A: three brinjal varieties viz. V 1 (BARI hybrid begun-4), V 2 (BARI begun-8) and V 3 (BARI begun-10) and factor B: four levels of potassium (K) viz. K 0 (0 kg K ha- 1 ), K 1 (95 kg K ha -1 ), K 2 (115 kg K ha -1 ) and K 3 (135 kg K ha ). In case of variety, significant variation was found for different parameters. The tallest plant (83.19 cm), maximum number of leaves per plant (35.18), highest number of fruits per plant (31.88), single fruit weight (58.18 g) and the highest yield (45.13 t ha ) was achieved from the variety V 1 . On the other hand, the different levels of potassium showed significant differences among them. The treatment K 3 provided the highest plant height (84.66 cm), number of leaves per plant (36.87), number of fruits per plant (29.93), single fruit weight (55.46 g) and the highest yield (39.96 t ha -1 ). Combined effect of variety and potassium also showed significant difference among the treatments. The treatment combination of V 1 K 3 performed the highest plant height (93.72 cm), number of leaves per plant (38.12) whereas V 1 K 2 gave the highest number of fruits per plant (37.30), single fruit weight (66.05 g) and the highest yield (54.67 t ha -1 ). Regarding economic analysis, V 1 K 2 also gave the highest gross return (Tk. 1093400.00), net return (Tk. 773330.00) and BCR (3.42). So the treatment combination of V 1 K 2 may be considered as a suitable combination for growth, yield and economic return of brinjal production and this treatment combination might be recommended at farmers level for better achievement .