EFFECT OF POTASSIUM AND PHOSPHORUS ON GROWTH AND YIELD OF OKRA IN ROOFTOP AND FIELD

Abstract

An experiment was conducted at two locations, the roof of the Biotechnology Department and Agroforestry research farm of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during April 2021 to September 2021 to study the effect of potassium and phosphorus on the growth and yield of okra on rooftop and field. The experiment was conducted in RCBD design with three replications. The MSTAT-C computer package was used for processing and analysis of data. The mean differences were adjusted by Duncan’s Multiple Range Test at 5% level of significance. Three levels of Potassium K 0 : 0 kg K 2 O ha -1 , K 1 : 50 kg K 2 O ha -1 , K 2 : 80 kg K 2 and three levels of phosphorous P 0 : 0 kg P 2 O 5 ha -1 , P 1 : 80 kg P 2 O 5 ha -1 , P 2 O ha : 120 kg P 2 were used as treatments in this experiment. The results showed that application of different levels of potassium plus phosphorus, significantly influenced the growth and yield of okra. In both locations, the maximum mean values were recorded from K 2 O ha -1 with 120 kg P 2 O 5 ha -1 ) treatments whereas the minimum were recorded from K 0 (control). Based on the present results, it can be suggested that the combined use of 80 kg K 2 O ha -1 with 120 kg P 2 O 5 ha -1 increased plant growth and yield of okra in both the locations.