EFFECT OF NITROGEN AND BORON ON THE GROWTH AND YIELD OF WHEAT (Triticum aestivum L.) BARI gom-28

Abstract

A field experiment was conducted at the Sher-e- Bangla Agricultural University Farm Dhaka 1207 during the rabi season from November 2015 to March 2016 to study the effect of N and B to alone and combined on the growth and yield of BARI Gom-28. The experiment comprised of four levels of N viz., 0, 40, 80 and 120 kg ha and three levels of B viz., 0, 1 and 1.5 kg ha -1 . The experiment was laid out in a Randomized Complete Block Design with three replications. The results of the experiment showed that there were significant effect on yield and yield attributes of wheat due to the application of N and B. Nitrogen showed significant effect on yield and yield attributes of wheat. Application of nitrogen @ 120 kg N ha -1 produced the highest plant height, number of total tillers plant -1 -1 , spike length, number of spikelet spike , number of grain spike -1 , 1000-grain weight, grain yield, straw yield and harvest index. In all the cases lower response was found from the control treatment. Boron fertilizer also had significant effect on yield and yield attributes of wheat. Application of boron @ 1 kg B ha -1 gave the highest plant height, number of total tillers plant , spike

-1 -1 length, number of spikelet spike -1 , number of grain spike -1 , 1000-grain weight, grain yield, straw yield and harvest index. In all cases the lower response was found from the control treatment. Interaction effect of N and B for yield and yield attributes of wheat was found significant. The highest plant height, number of total tillers plant , spike length, number of spikelet spike -1 , number of grain spike -1 , 1000-grain weight, grain yield, straw yield and harvest index of wheat were obtained from the treatment combination of 120 kg N and 1 kg B ha -1 . On the other hand, in all the cases lower response was found from the control treatment. Results showed that grain yield of wheat was increased with increasing levels of both N and B up to 120 kg ha and 1 kg ha -1 , respectively. The interaction effect of N and B on both the parameters was significant. -1 -1