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Effect of Nitrogen and Boron on the Performance of Wheat

C. Debnath
Department Agronomy, Bangladesh Agricultural University, Mymensingh

M. A. Kader
Department Agronomy, Bangladesh Agricultural University, Mymensingh

N. Islam
Department Agronomy, Bangladesh Agricultural University, Mymensingh

Abstract/ Executive Summary:

A field experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh from November 2011 to March 2012 to find out the effect of nitrogen (N) and boron (B) fertilization on the performance of wheat. The experiment comprised of four levels of N viz., 0, 80, 120, 160 kg ha^-1 and three levels of B viz., 0, 1 and 2 kg ha^-1. The experiment showed that there were significant differences in yield due to the application of N and B though some of the yield attributes were not found significant. Grain yield was found to be significantly and positively correlated with number of effective tillers plant^-1, number of fertile spikelets spike^-1, number of gains spike^-1and straw yield. A result showed that grain yield of wheat was increased with increasing levels of both N and B up to 120 kg ha^-1and 2 kg ha^-1, respectively. The interaction effect of N and B on both the parameters was significant.

Keywords: Boron level, Nitrogen level, Wheat

Location: Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh

Start Date: 00-11-2011

End Date: 00-03-2012

Program Area: Crop-Soil-Water Management

Commodity: Wheat

Objectives:

1. To examine the effect of N and B on the performance of wheat, 2. To investigate the interaction effect of N and B on the yield of wheat.

Methodology:

The experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during the period from November 2011 to March 2012 to find out the effect of nitrogen and boron on the yield of wheat. The experimental site lies at 24.75°N latitude and 90.50°E longitude. The soil of the experimental land belongs to the 'Sonatola' series under the General Soil Type, Non-calcareous Dark Grey Floodplain soils. The test crop was wheat (Triticum aestivum L.) variety 'Shatabdi' having heat tolerant characteristics. The experiment area is situated under sub-tropical climate, characterized by heavy rainfall during kharif season (April to September) and scanty rainfall in rabi season (October to March). The experiment consisted of four nitrogen treatments, i.e 0 kg ha^-1(No), 80 kg ha^-1 (N80), 120 kg ha^-1 (N120), and 160 kg ha^-1 (N160) and three boron treatments, i.e 0 kg ha^-1(Bo), 1 kg ha^-1 (B1) and 2 kg ha^-1 (B2) and one variety name “Shatabdi”. The experiment was laid out in a randomized complete block design with three replications. Each replication represented a block. Each block was divided into 12 unit plots where 12 treatments were allotted at random. Thus, there were 36 (12x3) unit plots. The plot size was 4 m x 2.5 m. Inter block and inters plot spacing were 1 m and 0.75 m, respectively. Seeds were sown on 29 November 2011 at the rate of 120 kg ha-1 in 25 cm apart rows. Fertilizers were applied according to the treatments and design. The land was fertilized with 150 kg ha^-1 TSP, 100 kg ha^-1 MOP, 110 kg ha^-1 Gypsum. Nitrogen and boron were applied as per experimental specification through urea and boric acid, respectively. The total amount of TSP, MOP, gypsum, boric acid and one third of the urea were applied at the time of final land preparation prior to sowing. The remaining two-thirds of urea was top-dressed in two equal splits on 20 and 55 days after sowing (DAS) of the seed. Weeding was done two times on 18 and 50 days after sowing (DAS). The field was irrigated after first weeding and then on 55 DAS. Thinning and gap fillings were done after the first irrigation. The crop was harvested at full maturity on 20 March 2012. Prior to harvesting 1m² plant samples were selected randomly and uprooted from each plot for data recording. Harvested crops were sun dried for four days. Then threshing, cleaning and drying of seeds were made separate plot-by-plot. The biological yield, grain and straw yield of each plot were then recorded. Sample plants were processed in a similar way. The collected data were analyzed statistically and the mean differences were adjudged by Duncan's Multiple Range Test using a computer based statistical program M-STAT.

Source of Information: J. Environ. Sci. & Natural Resources, 7(1): 105-110, 2014; ISSN 1999-7361

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Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Grain yield was found to be significantly and positively correlated with number of effective tillers plant^-1, number of fertile spikelets spike^-1, number of gains spike^-1and straw yield. A result showed that grain yield of wheat was increased with increasing levels of both N and B up to 120 kg ha^-1and 2 kg ha^-1, respectively. The interaction effect of N and B on both the parameters was significant.

Knowledge Management: Journal