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Organic Nutrient Management on Yield, Quality and Economic Analysis of T. Aman Rice

S. A. S. Shormy
Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh-2202.

M. A. H. Chowdhury
Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh-2202.

M. A. Haque
Senior Scientific Officer
Soil Science Division, Bangladesh Institute of Nuclear Agriculture, Mymensingh

B. K. Saha
Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh-2202.

H. Kato-Noguchi
Laboratory of Plant Biochemistry, Department of Applied Biological Science, Faculty of Agriculture, Kagawa University, Miki, Kagawa 761–0795, Japan

Abstract/ Executive Summary:

A field experiment was conducted at the Bangladesh Agricultural University Farm, Mymensingh from July to October 2011 to investigate the effect of organic nutrient management on yield attributes, yield and quality of T. aman rice var. BRRI dhan49. Ten treatments were used for the experiment which were as follows, T₀: Control, T₁: Recommended doses of N, P, K and S (RD-NPKS), T₂: Green manure @ 10 t ha^-1 (GM_{10 t ha}^-1 ), T₃: GM @ 5 t ha^-1 + Rice straw @ 5 t ha^-1 (GM _{5 t ha}^-1 + RS _{5 t ha}^-1), T₄ : GM @ 5 t ha^-1+ Farm yard manure @ 5 t ha^-1 (GM _{5 t ha}^-1 + FYM _{5 t ha}^-1), T₅ : Oil cake @ 2.5 t ha^-1 (OC_{2.5 t ha}^-1), T₆ : GM @ 5 t ha^-1+ FYM @ 5 t ha^-1 + Phosphate solubilizing bacteria (GM _{5 t ha}^-1+ FYM _{5 t ha}^-1+ PSB), T₇: GM @ 5 t ha^-1+ PSB (GM _{5 t ha}^-1+ PSB), T₈ : FYM @ 5 t ha^-1 + PSB (FYM _{5 t ha}^-1+ PSB) and T₉: RD-NPKS + PSB. The experiment was laid out in a randomized complete block design with three replications. Most of the yield and yield contributing characters were significantly influenced with different treatments except panicle length and 1000 grain weight. The grain and straw yield varied from 3.10 to 5.51 t ha^-1 and 4.31 to 5.83 t ha^-1, respectively. The highest grain yield (5.51 t ha^-1) was obtained from the recommended doses of chemical fertilizers along with PSB. Among the organic ammendments used in the study, GM_{10 t ha}^-1 and GM _{5 t ha}^-1 + FYM _{5 t ha}^-1 + PSB demonstrated statistically identical yield with the recommended doses of chemical fertilizers. The protein content was also significantly influenced by the application of different treatments and the highest protein content was obtained from GM @ 10 t ha^-1 treatment. From the economic analysis, it can be concluded that the combined application of GM 5 t ha^-1, FYM 5 t ha^-1 and PSB was more economic compared to other treatments with respect to T. aman rice cultivation. Maximum benefit cost ratio was calculated from GM _{5 t ha}^-1 + FYM _{5 t ha}^-1 + PSB treatment. The overall findings of this study indicated that different organic nutrient management in T. aman rice cultivation can be used as an alternate option of chemical fertilizers to achieve optimum yield, quality and cost of return.

Keywords: Rice, Organic nutrient management, Yield, Quality, Benefit cost ratio.

Location: Bangladesh Agricultural University Farm, Mymensingh.

Start Date: 11-07-2011

End Date: 27-12-2011

Program Area: Quality and Nutrition

Commodity: Rice

Objectives:

To evaluate the effect of organic nutrient management on yield, quality and economic return of T. aman rice.

Methodology:

The experiment was carried out during aman season from 11 July 2011 to 27 December, 2011 at the Bangladesh Agricultural University Farm, Mymensingh. The soil was silt loam texture having pH 6.49, organic C 0.72%, total N 0.12%, available P 12.1µg g^-1soil, exchangeable K 0.5 cmol kg^-1, available S 9.28 µg g^-1determined by the method described by (Page et al., 1982; Jackson, 1973; Olsen et al., 1954; Black, 1965). Seeds of BRRI dhan49 were collected from Bangladesh Agricultural Development Corporation (BADC). There were 10 treatments combination viz. T₀: Control, T₁: Recommended doses of N, P, K and S (RD-NPKS), T₂: Green manure @ 10 t ha^-1 (GM _{10 t ha}^-1 ), T₃: GM @ 5 t ha^-1 + Rice straw @ 5 t ha^-1 (GM _{5 t ha}^-1 + RS _{5 t ha}^-1), T₄ : GM @ 5 t ha^-1+Farm yard manure @ 5 t ha^-1 (GM _{5 t ha}^-1 + FYM _{5 t ha}^-1), T₅ : Oil cake @ 2.5 t ha^-1 (OC _{2.5 t ha}^-1), T₆ : GM @ 5 t ha^-1+ FYM @ 5 t ha^-1 + Phosphate solubilizing bacteria (GM _{5 t ha}^-1 + FYM _{5 t ha}^-1 + PSB), T₇: GM @ 5 t ha^-1+ PSB (GM _{5 t ha}^-1 + PSB), T₈ : FYM @ 5 t ha^-1 + PSB (FYM _{5 t ha}^-1 + PSB) and T₉: RD-NPKS + PSB. The experiment was laid out in randomized complete block design with three replications. One third of N and full doses of P, K & S were applied at the time of final land preparation and remaining N was applied in early tillering and late tillering stage. Rice straw, farm yard manure and oil cake were incorporated into soil 7 days before transplanting. Thirty day old rice seedlings were transplanted on 11 July 2011. Weeding, irrigation and pesticide application were done as and when necessary throughout the growing period. The plants were harvested when attained full maturity and data on yield and yield contributing parameters were collected from harvested crop samples. The grain and straw N content was determined by micro Kjeldahl method as described. Protein content of grain and straw were calculated by multiplying the N content with 5.85. Analysis of variance was done with the help of computer package program MSTAT according to Gomez and Gomez and the mean differences among different treatments were adjudged by DMRT.

Source of Information: Bangladesh J. Seed Sci. & Tech. 16 (1 &2): 119-124 (2012) ISSN 1029 - 8800

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The organic nutrient management can be used as an alternate option of chemical fertilizers for getting higher yield, quality and return of T. aman rice var. BRRI dhan49 under agroclimatic condition of BAU, Mymensingh.

Knowledge Management: Journal