Influence of Nitrogen and Phosphorus on the Growth and Yield of Fine Aromatic Rice (cv. Binadhan-13)

Abstract

Nitrogen and phosphorus are the essential nutrients involved in various physiological processes and affect the grain yield of rice. An experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh to find out how nitrogen and phosphorus affect the growth and productivity of fine aromatic rice. The experiment consisted of five levels of nitrogen viz. 0, 25, 50, 75 and 100 kg N ha-1 with four levels of phosphorus viz. 0, 15, 30, and 45 kg P2O5 ha-1. The experiment was set up using a randomized complete block design with three replications. According to the findings, the level of nitrogen, phosphorus and their interactions had a big impact on the yield and growth of aromatic rice. At harvest, the highest grain yield (4.15 t ha-1) was found in 75 kg N ha-1 which was identical with 100 kg N ha-1 while the lowest one was found in control (0 kg N ha-1). In case of phosphorus, 30 kg P2O5 ha-1 produced the maximum grain yield (3.73 t ha-1) compared to other treatments and the lowest grain yield was discovered in control (0 kg P2O5 ha-1). In interaction, the highest plant height (150 cm), number of effective tillers hill-1 (7.33), panicle length (24.00 cm), grains panicle-1 (136.9) and grain yield (4.37 t ha-1) were recorded in 75 kg N ha-1 × 45 kg P2O5 ha-1. Application of 75 kg N ha-1 along with 45 kg P2O5 ha-1 appears to be a promising combination for growing aromatic fine rice (cv. Binadhan-13).