GROWTH AND YIELD RESPONSES OF RAPESEED AND MUSTARD TO BORON AND SELENIUM

Abstract

The present study was carried out at the Agronomy experimental field of Sher-eBangla Agricultural University, Dhaka, Bangladesh during the period from November

2020

to February 2021 to study the growth and yield response of different brassica oilseeds species to boron and selenium. Two factors experiment consisted of three varieties viz., V 1 (BARI Sarisha-16), V 2 (BARI Sarisha-14) and V 3 (BARI Sarisha-17) with four doses of boron and/or selenium viz. control treatment S 0 (no boron or selenium), S 1 (Boron; 1 mM spray), S 2 (Selenium; 25 µM spray) and S 3 (Boron+ Selenium; 1 mM + 25 µM spray) were considered. There were 12 treatments combinations. The experiment was laid out in the two factors Randomized Complete Block Design (RCBD) with three replications. The variety V 1 (BARI Sarisha-16) showed higher plant growth and dry matter accumulation and also gave the maximum seed yield (3008 kg ha -1 ) compared to V 2 (BARI Sarisha-14) and V 3 (BARI Sarisha17).

Similarly, S 3 (Boron+ Selenium) treatment showed the best performance on growth, yield contributing parameters and also gave the highest seed yield (2323 kg ha -1 ) compared to other treatments of boron or selenium treatments. Regarding treatment combination of variety and boron + selenium, significant variation was found for most of the parameters. Treatment combination of V 1 S 3 showed better performance on different parameters and gave the highest seed yield (3137 kg ha ) with highest harvest index (35.32%) but V 3 S 3 gave the highest stover yield (6587 kg ha -1 ) whereas, V 2 S 0 gave least performance for the most of the parameters. From the above results, it may be concluded that among variety, V 1 (BARI Sarisha-16) is better than V 2 (BARI Sarisha-14) and V 3 (BARI Sarisha-17) regarding yield performance. Again, together application of Boron + Selenium is better than individual application of Boron or Selenium regarding growth and yield performance. As a result, V 1 S 3 performed best regarding yield of mustard compared to other treatment combinatio