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Performance of Biostar Organic Fertilizer on the Growth and Yield of Boro Rice

Pranesh Kumar Saha
Principle Scientific Officer
Soil Science Division, BRRI Gazipur

A T M Shakawat Hossain
Senior Scientific Officer
Soil Science Division, BRRI Gazipur

Rafiqul Islam
Principal Scientific Officer
Soil Science Division, BRRI Gazipur

Masuda Aktar
Senior Scientific Officer
Soil Science Division, BRRI Gazipur

S. Kaiser Zaman
Chief Scientific Officer
Soil Science Division, BRRI Gazipur

Abstract/ Executive Summary:

Application of biostar, an organic fertilizer, gave 0.87 and 1.24 t/ha greater yield than the control plot at BRRI farm, Gazipur and at BRRI Regional Station, Rangpur, respectively, in Boro season. In both locations, the treatment T₂ (100% chemical fertilizers) produced the substantially highest yield. Integrated use of BOF and inorganic fertilizer did not show any positive result. But BOF alone gave significantly higher yield than that of absolute control and also showed MBCR of more than 1.0.

Keywords: Biostar, Organic fertilizer, Benefit cost ratio, Marginal rate of return.

Location: BRRI farm, Gazipur and BRRI R/S farm, Rangpur

Start Date: 01-07-2008

End Date: 30-06-2009

Program Area: Crop-Soil-Water Management

Commodity: Manures

Objectives:

To evaluate the performance of this fertilizer on the growth and yield of Boro rice.

Methodology:

Two field experiments were conducted at BRRI farm, Gazipur and BRRI R/S farm, Rangpur during the Boro season, 2008-09. The initial soil characteristics of the experimental fields are presented in Table 63. The following six treatment combinations were tested: T₁ = Abs. control (Native nutrients), T₂ = NPKSZn @ 120-15-50-10-0 kg /ha for Gazipur site/T₂ = NPKSZn @ 120-15-50-10-2 kg /ha for Rangpur site, T₃ = T₂ + 2 t BOF/ha, T₄ = 75% of T₂ + 2 t BOF/ha, T₅ = 50% of T₂ + 2 t BOF/ha and T₆ = 2 t BOF/ha. The experiments were laid out in a randomized complete block design with three replications. The sources of nutrients N, P, K, S, and Zn were urea, TSP, MP, gypsum and zinc sulfate, respectively. All TSP, MP, Gypsum, Zinc-sulphate and BOF were applied at the final land preparation. Urea was applied into three equal splits: 1/3 N as basal, 1/3 N at early tillering stage and the remaining 1/3 N at 5-7 days before panicle initiation stage. BRRI dhan29 was used as test crop at both locations. Two to three seedlings/hill were transplanted with 20 cm x 20 cm spacing. Necessary inter- cultural operations were done as and when required. At maturity, the crop was harvested from 5 m² area at the centre of each plot and grain yield was adjusted to 14% moisture. The tiller no., panicle no., grain and straw yields were recorded. The obtained data were statistically analyzed following IRRISTAT version 4.1 (IRRI, 1998). Finally economic analyses were done for added return, net return, marginal benefit cost ratio (MBCR) and marginal rate of return (MRR).

Source of Information: Proceedings of BRRI Annual Internal Research Review, 2008- 2009

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Application of BOF in combination with chemical fertilizer significantly increased the tiller number, panicle number, grain and straw yield of BRRI dhan29 over control at both Gazipur and Rangpur locations. At BRRI farm, Gazipur, 2 t BOF/ha alone produced significantly higher yield (2.78 t/ha) than that of Native nutrients. The significantly highest grain yield of 4.88 t/ha was obtained with the treatment 100% chemical fertilizer. Percent grain yield increase over control varied from 138 to 155 among the treatments. At BRRI R/S farm, Rangpur, like BRRI farm, Gazipur, 2 t BOF/ha alone produced significantly higher yield (4.13 t/ha) than that of Native nutrients. The significantly highest grain yield of 6.86 t/ha was obtained with the treatment 100 % chemical fertilizer. It was 137% yield increase over control plot. Percent grain yield increase over control varied from 43 to 137 among the treatments. At Gazipur farm, the application of fertilizer increased the gross and net return in all the treatments. The gross return ranged from Tk.44,120/ha in T6 to Tk.77,440/ha in T₂. The highest net-return of Tk.63,395/ha was obtained with T₂ followed by T₄ (Tk.55,072/ha). The highest added-return of Tk.46,920/ha was also obtained with T₂ followed by T₃ (Tk.45,460/ha). The highest MBCR was obtained with the treatments T₂ (3.34) followed by T₅ (2.36) and T₄ (2.21). The MBCR of T₆ was 1.31. The application of fertilizer increased the gross return, which ranged from Tk.62,580/ha in T₆ to Tk.1,06,740/ha in T₂. It is appeared from the findings that the treatment T₂ (100% chemical fertilizer), like the BRRI farm, Gazipur, may be the most economically viable fertilizer management packages for Boro rice cultivation at BRRI RS farm, Rangpur. BOF alone showed slightly economically viable result at BRRI RS farm, Rangpur.

Knowledge Management: Report/Proceedings