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Growth, Yield and Quality of Wheat Varities as Affected by Different Levels of Nitrogen

H. Mondal
Department of Agronomy, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh

S. Mazumder
Training Specialist
Sher - e - Bangla Nagar Adorsha Mohila College, Dhaka - 1207 , Bangladesh

S. K. Roy
Department of Genetics and Plant Breeding, Sher - e - Bangla Agricultural University, Dhaka - 1207, Bangladesh

T. A. Mujahidi
Plant Breeding Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur - 1701, Bangladesh

S. K. Paul
Agronomy Division, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur - 1701, Bangladesh

Abstract/ Executive Summary:

A field experiment was conducted at the experimental field of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during November 2012 to March 2013 to evaluate the response of three (3) wheat varieties viz., BARI Gom23, BARI Gom24 and BARI Gom25 under four levels of nitrogen fertilizer i.e, 75, 100, 125 and 150 kg N ha^-1. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. Results showed that plant height, number of leaves plant^-1, leaf length and dry matter content were significantly affected due to varieties and/or nitrogen levels. Grains ear^-1, number of fertile grains plant^-1, 1000-grain weight, grain yield and harvest index were also significantly influenced by varieties and/or nitrogen levels. The value of all parameters studied in this experiment increased with increasing nitrogen levels up to 125 kg N ha^-1 and thereafter decreased with fertilizer increasing level. Combination results showed that BARI Gom-24 with application of 125 kg N ha^-1 gave the maximum grain yield (4.71 t ha^-1), harvest index (49.37 %) and protein content (10.88%).

Keywords: Wheat variety, Nitrogen, Protein, Grain quality

Location: Agronomy field, Sher-e-Bangla Agricultural University, Dhaka - 1207.

Start Date: 00-11-2012

End Date: 00-03-2013

Program Area: Crop-Soil-Water Management

Commodity: Wheat

Objectives:

To determine the response of wheat variety as influenced by different levels of nitrogen.

Methodology:

The experiment was conducted at the agronomy field of Sher-e-Bangla Agricultural University, Dhaka - 1207, during the period from November 2012 to March 2013. The experimental area is located at 23.41 ' N and 90.22 ' E latitude and at an altitude of 8.6 m from the sea level. The soil of the experimental field belongs to the Tejgaon series under the Agroecological Zone, Madhupur Tract (AEZ-28) and the General Soil Type is Deep Red Brown Terrace Soils. The experiment was laid out in Randomized Complete Blo ck Design (RCBD) with factorial arrangement and three replications. There are two sets of treatments in the experiment. Factor A: Variety (3), V₁ = BARI Gom - 23 (Bijoy), V₂ = BARI Gom - 24 (Prodip), V₃ = BARI Gom - 25 and Factor B: Nitrogen levels (4) N₁ = 75 k g N ha^-1, N₂ = 100 kg N ha^-1, N₃ = 125 kg N ha^-1, N₄ = 150 kg N ha^-1. There were 12 treatment combinations. Seeds were sown continuously in line on 19 November, 2012. The line to line distance was maintained at 20 cm. The form of N fertilizer was granular urea. The experimental plots were fertilized with P, K, S and B at the rate of 26-50-20-1 kg ha^-1, respectively in the form of triple superphosphate (TSP), muriate of potash (MOP), gypsum and boric acid, accordingly during final land preparation as basal dose. The fertilizer does was according to soil test basis. Here K application was high than P to improve the grain quality. One third of nitrogenous fertilizer was incorporated in the soil at the time of final land preparation according to treatments. The remaining amount of nitrogenous fertilizer was applied as top dressing in two split doses at crown root initiation stage (20 DAS) and prior to spike initiation stage (55 DAS). Two times weeding were done manually at 25 and 45 DAS. Two irrigations were app lied at the time of crown root initiation stage (20 DAS) and booting stage (55 DAS). Excess water was drained out from the field. All other intercultural operations were done as per requirement. The crop was harvested on March 18, 2013. The necessary data were collected from ten selected plants from each plot in the field at 30 days interval and at harvest, and dry matter weight of plant was collected at 30 days interval from the sub-samples of 5 plants plot^-1 uprooting from 2^nd line and were oven dried unt il a constant level. Final yield data were collected from undisturbed middle three rows in the center. The data obtained for different characters were statistically analyzed following the analysis of variance techniques by using MSTAT-C computer package programme. The significant differences among the treatment means were compared by least significant difference (LSD) at 5% level of probability (Gomez and Gomez, 1984)

Source of Information: Bangladesh Agron. J. 2015, 18(1): 89-98

Article Link (Online Journal): http://www.banglajol.info/index.php/BAJ/article/view/25576

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Based on the results of the study it can be concluded that cultivating BARI Gom-24 coupled with application o f 125 kg N ha^-1 will be a promising practice for good yield also for higher protein content of wheat. However, to reach a specific conclusion and recommendation, more research work on different varieties and rate of nitrogen should be done over different A groecological zones.

Knowledge Management: Journal, Thesis