Agricultural Research Management Information System

Home
Research Summary
Search
About Us
- ARMIS
- Brochure
Contact Us
Report
User Request
Data Input
Help
- Operation Manual
  - PDF
  - Video
- Program Area & Commodity
We have reached 37600 number of research entries at this moment.

- Logout

Research Detail

Home
Research
Detail

Effect of Nitrogen Levels and Weed Control Treatments on the Yield Contributing Characters of Wheat

M. A. Haque
Department of Agronomy and Agricultural Extension, University of Rajshahi, Rajshahi.

M. H. Tarique
Post-graduate student
Department of Agronomy and Agricultural Extension, University of Rajshahi, Rajshahi.

Abstract/ Executive Summary:

An experiment was designed in a randomized complete block design during November 2007 to March 2008 to investigate the effect of nitrogen levels and weed control treatments on the yield and other crop characters of wheat (cv. Shotabdi). Four levels of nitrogen viz. 0, 80, 120 and 160 kg Nha^-1 and four weed control treatments namely no weeding (W₀), one hand weeding (W₁) two hand weeding (W₂), completely weed free (W₃) were used. In wheat field thirteen different weed species were observed. Among them Cyperus rotundus, Cynodon dactylon, Chenopodium album, Anagallis arvensis and Fumaria parviflora were the dominant weed species. Nitrogen levels had significant effect on all the crop characters studied. Application of 120 kg Nha produced the highest grain yield (4.94 tha^-1). All weed control treatments improved grain yield as compared to no weeding treatment. The highest grain yield (3.95 tha^-1) was produced in weed free treatment. The second highest grain yield (3.66 tha^-1) was found in two hand weeding treatment which was statistically similar to one hand weeding treatment. The interaction effect between nitrogen levels and weed control treatments were non significant on all the crop characters except number of florets per spicklets.

Keywords: Weed control, Nitrogen, Yield, Wheat

Location: Agronomy Field Laboratory, Dept. of Agronomy and Agricultural Extension, Rajshahi University

Start Date: 00-11-2007

End Date: 00-03-2008

Program Area: Crop-Soil-Water Management

Commodity: Wheat

Objectives:

To investigate the effect of nitrogen fertilizer levels and weed control treatments on the yield and yield contributing characters of wheat.

Methodology:

Field experiment was conducted at the Agronomy Field Laboratory, Dept. of Agronomy and Agricultural Extension, Rajshahi University, during the period from November 2007 to March 2008 to evaluate the effect of nitrogen fertilizer and weed control treatments on the yield and yield contributing character of wheat (cultivar - Shotabdi). The experiment was established with randomized complete block design (RCBD) having three replications. Four levels of nitrogen viz, 0, 80, 120 and 160 kg Nha^-1 and four weed control treatments namely no weeding (W₀), one hand weeding (W₁) two hand weeding (W₂) and completely weed free (W₃) were used as experimental treatments. Urea was used as the source of Nitrogen. The triple super phosphate and muriate of potash were applied at the rate of 180 and 50 kg ha^-1 respectively at the time of final land preparation. Wheat seeds were sown continuously in line on November 19, 2007. Agronomic practices were done as and when necessary. Data of weed vegetation were taken from the unweeded plot using a 1m x 1m quadrat size. Frequency, density, abundance and their relative values of the weed species were calculated from the collected data. Importance value index (TVI) was calculated by adding these, relative values for the species. Ten randomly selected plants under each treatment were harvested at maturity on March 22, 2008. From these plants data on plant height, number of total tillers per plant, number of fertile tillers per plant, Extrusion length (cm), panicle length (cm), number of spikelets per spike, number of florets per spikelet, and 1000 grain weight were recorded. In order to obtain grain yield the plants from 1 m² of each treatment were harvested. Data were analyzed according to the procedure. The mean differences were adjudged by Duncan's Multiple Range Test.

Source of Information: Bangladesh J. Weed Sci. 1(1), 25-30, June 2010

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

From the present study it might be concluded that wheat yield decreased tremendously if no weed control measure was taken. So wheat cultivar Shotabdi could be grown at two hand weeding with 120 kg Nha^-1 for getting the maximum yield.

Knowledge Management: Journal