GROWTH AND YIELD ATTRIBUTES OF RICE AS INFLUENCED BY ZINC AND BORON

Abstract

The experiment was conducted at the research field, Department of Agronomy, Hajee Mohammad Danesh Science and Technology University, Dinajpur, Bangladesh during January to April, 2017. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. The experiment was consisted of two factors viz. factor A: B1 = 0 kg B ha-1, B2 = 5 kg B ha-1, B3 = 10 kg B ha-1 and B4 = 15 kg B ha-1 , and Factor B: Zn1 = 0 kg Zn ha-1, Zn2 = 10 kg Zn ha-1 , Zn3 = 15 kg Zn ha-1, and Zn4 = 20 kg Zn ha-1. Data were recorded on different growth and yield contributing parameters. Most of the parameters showed significant difference among the treatment. Results indicated that the highest plant height (92.91 cm), panicle length (28.30 cm), number of filled grain panicle-1 (186.1), number of total grain panicle-1 (203.1), grain yield (4.93 t ha-1), and harvest index (35.69%) was recorded from B3Zn3. Whereas the highest values of number of non-effective tiller hill-1 (8.25) and number of un-filled grain panicle-1 (31.00) were recorded from the treatment combination of 0 kg B ha-1 and 0 kg Zn ha-1 i.e. B1Zn1 treatment. At 50, 60 and 70 DAT, the highest grain growth rate (0.029, 0.032 and 0.0390 g) was found from the treatment combination of B3Zn3 (10 kg B ha-1 and 15 kg Zn ha-1), whereas the lowest grain growth rate (0.011, 0.019 and 0.0130g) was observed from the treatment combination of B1Zn1 (0 kg B ha-1 and 0 kg Zn ha-1) at same DAT. The treatment combination (B3Zn3) performed better for increasing the grain growth and yield of Tia rice.