INFLUENCE OF PLANT SPACING AND WEED MANAGEMENT METHODS ON THE YIELD OF WHITE JUTE (Corchorus capsularis)

Abstract

A field experiment was conducted at Sher-e-Bangla Agricultural University. Dhaka during April to August, 2009 with a view to find out the influence of plant spacing and weed management methods on the yield of white jute (var.CVL- 1). The experiment consisted of four weed control methods viz, two times hand weeding with one raking, herbicide Whip Super 9 EC (FenoxapropP-ethyl: C 13H16C1N05 ) application at 15 DAS, two times hand weeding at 20+40 DAS and three times hand weeding at 15+30+45 DAS and Ibur plant spacing viz., 20 cm x 10 cm, 25 cm x 10 cm. 30 cm x 10 cm (20, 25 and 30 cm row to row with plants spaced at 10 cm intervals in the row) and broadcasting. The dominant grass weeds were Cynodon dactylon (43%), Echinochloa colonam (29%) and Eleusine india (22%). Results showed that plant spacing differed significantly and 25 cm x 10 cm spacing gave the highest (3.12 t ha") fibre yield which was statistically similar with 20 cm x 10 cm. Two times weeding and one raking gave the highest (3.12 t hi') fibre yield which was statistically similar with herbicide application (2.97 t ha"). Interaction effect showed highest fiber yield (4.02 t ha") was obtained from 20 cm x 10 cm spacing with herbicide application. Whip Super 9 EC @ 615 ml ha" effectively controlled the grass weeds providing higher fibre yield and net 7.13 taka return per taka invested whereas 6.51, 5.18 and 5.34 taka from two times hand weeding with one raking, two times hand weeding and three times hand weeding, respectively.