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

Yield Response and Nitrogen Use Efficiency of Boro Rice Varieties as Affected by Different Methods of Usg and Prilled Urea Application

M.K.A. Bhuiyan
Agronomy Division, Bangladesh Rice Research Institute, Gazipur, Bangladesh

L. Nahar
Agronomy Division, Bangladesh Rice Research Institute, Gazipur, Bangladesh

M.M. Mahbub
Agronomy Division, Bangladesh Rice Research Institute, Gazipur, Bangladesh

R.Shultana
Agronomy Division, Bangladesh Rice Research Institute, Gazipur, Bangladesh

M.A.J. Mridha
Agronomy Division, Bangladesh Rice Research Institute, Gazipur, Bangladesh

A. Rahman
FMPHT Division, Bangladesh Rice Research Institute, Gazipur, Bangladesh

M. Kamruzzaman
FMPHT Division, Bangladesh Rice Research Institute, Gazipur, Bangladesh

Abstract/ Executive Summary:

An experiment was conducted at the Bangladesh Rice Research Institute (BRRI), Gazipur during Boro season of 2013-14 and 2014-15 to find out the nitrogen use efficiency and yield of boro rice var. BRRI dhan28 and BRRI dhan29 under four N management practices such as application of prilled urea using prilled urea applicator, application of USG (2.7gm) using USG applicator, broadcasting of prilled urea following three splits and a control (without urea). The experimental design was RCBD replicated thrice. BRRI dhan29 with urea broadcasted plots produced higher grain yield (7.38t ha-1) followed by BRRI dhan29 with USG application (6.65 t ha-1). Hand broadcasting with urea fertilizer showed 15.38.5and 2.5, 9.89% higher grain yield than machine application of prilled urea and USG in BRRI dhan28 and BRRI dhan29, respectively. Grain yield showed a significant quadratic response to N fertilization and significant linear response with total dry matter production in both the varieties. Higher total N was uptake from urea broadcasted plots in BRRI dhan29 followed by urea broadcasted from BRRI dhan28. BRRI dhan29 with Prilled urea applicator and BRRI dhan29 with USG treatment uptake intermediate nitrogen. N uptake in grain and total N uptake had a significant linear and quadratic response to N treatment in BRRI dhan28 and BRRI dhan29. Nitrogen use efficiency was higher in BRRI dhan29 compared to BRRI dhan28. Economic analysis showed that rice var. BRRI dhan28 and BRRI dhan29 with urea broadcast had the highest gross return of Tk.145145.00 and Tk. 158310.00 ha-1, respectively. However, the maximum cost (Tk. 151131) was involved for BRRI dhan29 with urea broadcasting, while the minimum with no urea fertilizer application for both the varieties. The highest marginal rate of return (MRR) (Tk.1146) was recorded from BRRI dhan28 with USG application using BRRI applicator.

Keywords: USG and Prilled urea applicator, Nitrogen use efficiencies, BRRI dhan28, BRRI dhan29

Location: At the experimental field of Bangladesh Rice Research Institute (BRRI), Gazipur

Start Date: 00-11-2013

End Date: 00-04-2015

Program Area: Crop-Soil-Water Management

Commodity: Rice, Fertilizer

Objectives:

To analyze nitrogen use efficiency and yield performance of two popular boro rice varieties, BRRI dhan28 and BRRI dhan29, as affected by different sources of nitrogen and its application methods

Methodology:

Experimental site and soil
The present study was conducted at the experimental field of Bangladesh Rice Research Institute (BRRI), Gazipur situated at 23059´33´´ N and 90024´19´´ E at an elevation of 8.4 m from the mean sea level, and is characterized by sub-tropical climate. The soil of the field was clay loam of shallow brown terrace under Madhupur tract (AEZ 28), the experimental field classified as a Chhiata clay loam, hyperthermic Vertic Endoaquept. The soil of the experimental plot was neutral acidic in nature (PH =6.3) and poor in fertility status. The experiment was conducted at BRRI farm, Gazipur during Boro season of 2013-14 and 2014-15 to find out NUEs and response of BRRI dhan28 and BRRI dhan29 under four N management practices such as i) Urea application by Prilled urea applicator ii) USG (2.7 g) application by USG applicator, iii) hand broadcasting of prilled urea with three splits and iv) control (without urea). The experiment was conducted in factorial RCBD design with three replications. Unit plot size was 6m x 4.8 m transplanted with 20 cm x 20 cm spacing. BRRI recommended managements were followed for raising seedlings and for other intercultural operations. Fertilizer TSP, MOP, Gypsum and zinc sulphate were added as basal. Prilled urea and USG (2.7 g) by prilled urea applicator and USG applicator were applied 3 days after planting. Prilled urea top dress were completed in three equal splits, at 15, 35 and 55 DAT. Thirty- eight -days old seedlings were transplanting on 16th and 18th August in 2013-14 and 2014-15, respectively. Grain and straw samples were collected from each plot, oven dried at 65 °C and grains was measured by the standard Micro-Kjeldahl procedure (Bremner and Mulvaney, 1982).
Agronomic efficiency, physiological efficiency, agro-physiological efficiency, apparent recovery efficiency, and utilization efficiency are calculated by using the formulas described by Fageria et al. (1997); Fageria and Baligar (2001). Data on yield and yield components were recorded at maturity. Economic analysis was done to determine the efficiency of different treatments following the procedure of Marginal Rate of Return (MRR) by CIMMYT (1988). In a combined analysis of data, the interaction of year, N levels, and varieties was non- significant so, pooled analyses was done and means were compared by LSD test.

Source of Information: Bangladesh Agron. J. 2016, 19(1): 1-10

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The findings of the study indicated that even though the highest grain yield was recorded from PU application by three splits, the NUE was higher in BRRI dhan28 × USG application plots. USG application by applicator in both BRRI dhan28 and BRRI dhan29 saved 40% nitrogen with intermediate grain yield. Economic analysis by MRR (Marginal rate of return) indicated that BRRI dhan28 x USG application by USG applicator had the highest MMR (1144.86) over other treatments. However, some practical limitations related to accurate calibration and mechanical sophistication need to be resolved to improve further the efficiency of the applicator

Knowledge Management: Journal