EFFECT OF ZINC AND BORON ON THE GROWTH AND YIELD OF BRRI dhan29 IN RED-TERRACE SOIL

Abstract

The field experiment was conducted at Sher-e-Bangla Agricultural IJniversity Farm. Dhaka during the boro season from I November 2007 to 15 March 2008 to observe the performance of zinc and boron on the yield and yield contributing characters of BRRI dhan29. The experiment consists of three levels of zinc viz. 0. 2.5 and 5.0 kg ha 4 and three levels of boron viz. 0, I and 2 kg hi'. The experiment was laid out in factorial randomized complete block design with three replications. Application of Zn significantly influenced all the growth and yield contributing characters except plant height (cm), panicle length (cm) and sterile spikelets panicle 4 whereas boron fertilization significantly influenced all parameters except plant height (cm). panicle length (cm) and 1000 grain weight. Five kg Zn hi' and two kg B hi' Zn s x 13 2 influenced plant to produce the highest grain yield. The maximum yield 5.56 thi' was recorded for this combination effect. Integrated use of zinc and boron significantly influenced contents and uptake of zinc (Zn) and boron (B) in the grain and straw of BRRI dhan29. In all eases of contents and uptakes of Zn and B in both grain and straw as allècted by Zn and B fertilizations. Zn5 13 2 performed the highest results.