1. Effect of Spacing on the Performance of T. Aman Rice Cv. Superamandhan

Abstract

The selection of appropriate plant spacing may contribute to the yield potential of a rice cultivar. Therefore, an experiment was conducted to evaluate the effect of spacing on ‘Superamandhan’ at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh from July to December. Twenty hill spacings viz. 25cm × 15cm (S1), 25 cm × 20 cm (S2), 25cm × 25 cm (S3), 30 cm × 20 cm (S4), 30 cm × 25 cm (S5), 30 cm × 30 cm (S6), 40 cm × 20cm (S7), 40 cm × 30 cm (S8), 40 cm × 40 cm (S9), 50 cm × 20 cm (S10), 50 cm × 30 cm (S11), 50 cm ×40 cm (S12), 50 cm × 50 cm (S13), 60 cm × 60 cm (S14), 60 cm × 50 cm (S15), 60 cm × 40 cm (S16), 60 cm × 30 cm (S17), 70 cm × 50 cm (S18), 70 cm × 40 cm (S19) and 70 cm × 30 cm (S20) were included as experimental treatment. The experimental design was randomized complete block design (RCBD) with three replications. This study showed that spacing had a significant influence on the growth, yield, and yield contributing characters of Superamandhan. The highest yield (4.33 t ha-1 ) of T. aman rice was found at 30 cm × 25 cm (S5) spacing. So, it may conclude that ‘Superamandhan’ grown under 30 cm × 25 cm spacing appeared to be the best for obtaining the highest grain yield.