EFFECT OF SOWJNG TIME AND POTASSIUM ON GROWTH AND YIELD OF STEM AMARANTH

Abstract

The study was conducted in the farm of Shcr-e-Bangla Agricultural University. Dhaka, during the period from March to June 2007. The experiment consisted of two flictors. Factor A: Four levels of sowing time; S 1 : 20 March, S2: 30 March, S3 : 09 April and 54 : 19 April; Factor B: Four levels of potassium fertilizer; K0: 0 kg K 2 0/ha (control), K1 : 130 kg K 20/ha. K 2: 140 kg K 20/ha and K3: 150 Kg K 2 0/ha.The experiment was laid out in randomized complete block design (RCBD) with three replications. In case of sowing time. S. produced the maximum plant height (84.09 cm) and yield (62.12 t/ha), while S produced the minimum plant height (80.64 cm) and S 1 minimum yield (54.91 t/ha). For potassium, K3 produced the longest plant (81.69cm) and highest yield (67.11 t/ha) while K 0 produced the shortest plant (63.10cm) and lowest yield (44.72 t/ha). For combined effect. S 3K3 produced the maximum plant height (99.43 cm) and S3K2 produced the maximum yield (71.78 t/ha) while S 3K0 produced the shortest plant (54.43 cm) and the minimum yield (40.71 t/ha). The highest benefit cost ratio obtained from S 3K2 (3.41). It may therefore be concluded that the 09April sowing with application of 140 kg K 20/ha is suitable combination (hr better growth and yield of stem amaranth.