Effect Of Boron On Yield And Mineral Nutrition Of Mustard (<i>Brassica Napus</i>)

Abstract

An experiment was conducted for three years from 2003-04 to 2005-06 to find out the optimum rate of B application for maximizing nutrient uptake and yield of mustard in calcareous soil of Jessore, Bangladesh. Boron was applied at 0, 1, and 2 kg/ha. The mustard variety BARI Sarisha-8, (B. napus group) was selected for the experiment. Effect of B was evaluated in terms of yield and mineral nutrients (N, P, K, S, Zn, and B) uptake. The mustard crop responded significantly to B application. The optimum rate of B was found to be 1 kg/ha There was no significant difference between 1 & 2 kg B/ha in all the years. Boron and N concentrations of grain and stover were significantly increased with increased rate of B application indicating that B had positive role on protein synthesis. In case of P, S, and Zn, the concentrations were significantly increased but in case of K, it remained unchanged in stover. The grain B concentration increased from 19.96 μg/g in B control to 45.99 μg/g and 51.29 μg/g due to application of 1 kg and 2 kg B/ha, respectively. Concerning the effect of B on the nutrient uptake, six elements followed the order K> N> S> P> B> Zn and these were significantly influenced by B application.  

Keywords: Mustard; boron; yield; nutrient uptake.

DOI: http://dx.doi.org/10.3329/bjar.v36i1.9230

BJAR 2011; 36(1): 63-73