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 Organic and Inorganic Sources and Doses of Nitrogen Fertilizer on the Yield of Boro Rice

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

Abstract/ Executive Summary:

The experiment was conducted to study the effect of different sources and doses of nitrogen application on the yield formation of boro rice. Two indica modern boro rice varieties (BRRI dhan28 and BRRI dhan36) and 21 nitrogen fertilizer combinations were used in the experiment. The experiment was laid out in split- plot design with three replications by assigning varieties in the main plots and nitrogen fertilizers in the sub-plots. The unit plot size was 4m x 2m. Yield and yield contributing characters were measured. Among the two varieties BRRI dhan28 produced higher grain and straw yield. Grain and straw yields were increased with the increase of nitrogen rate up to 120 kg ha^-1 at all the sources. In general, organic manures alone could not produce higher grain yield but the combination of organic and inorganic fertilizers produced higher yield. The application of 60 kg N ha^-1 as urea with 60 kg N ha^-1 as mustard oil cake (MOC) produced maximum grain and straw yield which was statistically similar to the yield of 50 kg N ha^-1 as urea with 50 kg N ha^-1 as MOC. The lowest values were found in control nitrogen application. The results suggest that replacement of 50% urea N by MOC was the best source of nitrogen considering higher yield of boro rice. Therefore, fertilization of BRRI dhan28 and BRRI dhan36 varieties of rice with 60 kg N ha^-1 as urea and 60 kg N ha^-1 as MOC or 50 kg N ha^{- 1} as urea with 50 kg N ha^-1 as MOC was found to be the best nitrogen rate among all the treatment combinations in respect of grain and straw yields.

Keywords: Cow dung, Mustard oil cake, Yield, Nitrogen, Urea, Boro rice

Location: Agronomy Field Laboratory, University of Rajshahi, Bangladesh

Start Date: 00-12-2004

End Date: 00-05-2005

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

1. To evaluate the effect of organic and synthetic nitrogen and their combination on productivity of boro rice and the replacement of chemical fertilizer by organic fertilizer.

Methodology:

The experiment was conducted at the Agronomy Field Laboratory, University of Rajshahi, Bangladesh during December 2004 to May 2005. The experimental soil contained 7.58 pH, 1.45 % organic carbon, 0.14 % total nitrogen, 7.25 ppm available P, 176 ppm available K and 21 ppm available S. The experiment consisted of two modern rice varieties (BRRI dhan28 and BRRI dhan36) and 21 fertilizer combinations viz., T₁ (control), T₂ (60 kg N ha^-1 as urea), T₃ (60 kg N ha^-1 as cow dung), T₄ {60 kg N ha^-1as mustard oil cake (MOC)}, T₅ (30 kg N ha^-1 as urea + 30 kg N ha^-1 as cow dung), T₆ (30 kg N ha^-1 as urea + 30 kg N ha^-1 as MOC), T₇ (80 kg N ha^-1 as urea), T₈ (80 kg N ha^-1 as cow dung), T₉ (80 kg N ha^-1 as MOC), T₁₀(40 kg N ha^-1 as urea + 40 kg N ha^-1 as cow dung), T₁₁ (40 kg N ha^-1 as urea + 40 kg N ha^-1 as MOC), T₁₂(100 kg N ha^-1 as urea), T₁₃(100 kg N ha^-1 as cow dung), T₁₄ (100 kg N ha^-1 as MOC), T₁₅(50 kg N ha^-1 as urea +50 kg N ha^-1 as cow dung), T₁₆ (50 kg N ha^-1 as urea + 50 kg N ha^-1as MOC), T₁₇ (120 kg N ha^-1 as urea), T₁₈ (120 kg N ha^-1 as cow dung), T₁₉ (120 kg N ha^-1 as MOC), T₂₀ (60 kg N ha^-1 as urea + 60 kg N ha^-1 as cow dung), T₂₁(60 kg N ha^-1 as urea + 60 kg N ha^-1 as MOC). The experiment was laid out in split- plot design with three replications by assigning varieties in the main plots and nitrogen fertilizers in the sub-plots. The unit plot size was 4m x 2m. The land was fertilized with 60 kg P₂O₅, 50 Kg K₂O, 10 Kg S and 4 Kg Zn ha^-1 as basal dose in the form of triple super phosphate, muriate of potash, gypsum and ZnO, respectively by subtracting the amount coming from cow dung or mustard oil cake. Treatment wise required amount of cow dung and mustard oil cake were incorporated thoroughly with soil before 7 days of transplanting. Treatment wise nitrogen as urea, cow dung and mustard oil cake was applied in three equal splits at 15, 30 and 50 days after transplanting (DAT). The control plots received no nitrogenous fertilizer. 35 days–old seedlings were transplanted by hand at 20 cm x 15 cm spacing on 17 January 2005. All intercultural operations were performed as and when necessary. The date of harvest was determined, when 90% of the grains became golden yellow color. The harvested crop of each plot was bundled separately, tagged properly and brought to the clean threshing floor. The bundles were dried on open sunshine, threshed and then seeds were cleaned. The seed and straw weights for each plot were recorded after proper sun drying. Five hills (Except the two border rows hill and central 1m2 area) were selected randomly from each plot prior to harvest for collecting data on crop characters. The grain, straw, biological yields and harvest index were recorded from one square meter area of each plot at harvest. The data were analyzed statistically and adjudged the mean differences by Duncan`s New Multiple Range Test (DMRT) with the help of computer package MSTAT-C.

Source of Information: J. Environ. Sci. & Natural Resources, 5(1): 273- 282, 2012; ISSN 1999-7361

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The results suggest that replacement of 50% urea N by MOC was the best source of nitrogen considering higher yield of boro rice. Therefore, fertilization of BRRI dhan28 and BRRI dhan36 varieties of rice with 60 kg N ha^-1 as urea and 60 kg N ha^-1 as MOC or 50 kg N ha^{- 1} as urea with 50 kg N ha^-1 as MOC was found to be the best nitrogen rate among all the treatment combinations in respect of grain and straw yields.

Knowledge Management: Journal