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Performance of Shusama Organic Fertilizer on the Growth and Yield of Wetland Rice

M. A. Aziz
Department of Soil Science, Sylhet Agricultural University, Sylhet?3100, Bangladesh

M. A. Mazid Miah
Soil Science Division, Bangladesh Rice Research Institute, Gazipur?1701, Bangladesh

M. J. Uddin
Department of Soil, Water and Environment, University of Dhaka, Dhaka?1000, Bangladesh.

Abstract/ Executive Summary:

Studies on the performance of Shusama organic fertilizer on the growth and yield of wetland rice was carried out during the T. aman season. The modern rice variety BRRI dhan31 was used as test crop. The following eight treatment combinations were tested: T₁ = Native nutrient; T₂ = Soil Test Base (STB); T₃= 1/3rd of STB + Shusama @ 124Kg/ha; T₄ = 1/3rd of STB + Shusama @ 124 Kg/ha as basal and 250 g/decimal at 40 ? 45 DAT; T₅ = 25% STB + Shusama @ 124 Kg/ha; T₆ = 50% STB + Shusama @ 124 Kg/ha; T₇ = 75% STB + Shusama @ 124 Kg/ha; T₈ = 100% STB + Shusama @ 124 Kg/ha. The experiment was laid out in Randomized Complete Block Design with 3 replications of each treatment. It appeared from the results that 50% reduction of chemical fertilizer on STB along with Shusama @ 124 Kg/ha may be a good combination of organic and inorganic fertilizer for sustaining soil fertility and increasing T. aman rice.

Keywords: Organic fertilizer, Growth, Yield, Wetland rice

Location: BRRI farm, Gazipur, Bangladesh

Start Date:

End Date:

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

To evaluate its performance in rice production in T. aman season

Methodology:

The experiment was conducted at BRRI farm, Gazipur during T. aman season of 2007. Soil texture, pH, organic matter, available P and S, exchangeable K, Na, Ca and Mg were determined following standard methods.(3-7) The experiment was laid out in a randomized complete block design with three replications having unit plot size of 5m x 4m. The eight treatment combinations were tested in the experiment viz. T₁= Native nutrient; T₂ = Soil Test Base (STB); T₃ = 1/3rd of STB + Shusama @ 124 Kg/ha;T₄ = 1/3rd of STB + Shusama @ 124 Kg/ha as basal and 250 g/decimal at 40 - 45 DAT; T₅ = 25% STB + Shusama @ 124 Kg/ha; T₆ = 50% STB + Shusama @ 124 Kg/ha; T₇ = 75% STB + Shusama @ 124 Kg/ha; T₈ = 100% STB + Shusama @ 124 Kg/ha. Amounts of N. P, K added (Kg/ha) in different treatments were outlined as T₁ = 0 Kg N, 0 Kg P and 0 Kg K; T₂ = 90 Kg N, 20 Kg P and 40 Kg K; T₃ = 38.68 Kg N, 14.84 Kg P and 18.29 Kg K; T₄ = 42.02 Kg N, 18.93 Kg P and 20.77 Kg K; T₅ = 31.18 Kg N, 13.18 Kg P and 14.96 Kg K; T₆ = 53.68 Kg N, 18.18 Kg P and 24.96 Kg K; T₇ = 76.18 Kg N, 23.18 Kg P and 34.96 Kg K; T₈ = 98.68 Kg N, 28.18 Kg P and 44.96 Kg K. TSP, MP, gypsum, zinc sulphate and Shusama were applied at final land preparation. Urea was applied into three equal splits, 1/3rd basal, 1/3rd at maximum tillering stage and the remaining 1/3rd at panicle initiation stage. BRRIdhan31 was used as test crop. Thirty-day-old 2-3 seedling/hill were transplanted on 11 August, 2003 with 20 cm × 20 cm spacing. Necessary intercultural operations were done as and when required. The crop was harvested plot wise on 24 November, 2003. The tiller, panicle, filled grain and unfilled grain production and grain and straw yield were recorded. Nutrient content of straw and grain were determined using standard analytical procedure. Total nutrient uptake was estimated. Finally economic analyses were done for net benefit and marginal rate of return.

Source of Information: Dhaka Univ. J. Biol. Sci. 20(1): 15?21, 2011 (January)

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Organic fertilizer Shusama was applied in combination with 50% reduced rate of chemical fertilizer on STB produced substantially higher yield. Integrated use of organic and inorganic fertilizer is the need of time for sustainable increased crop production and improved soil fertility. In addition, reduced use of chemical fertilizer positively influences the environment through reducing contamination of air, soil and water. Considering these points it may be suggested that 50% reduction of chemical fertilizer on STB along with Shusama @ 124 kg/ha may be a good combination of organic and inorganic fertilizer for sustaining soil fertility and increasing T. aman rice.

Knowledge Management: Journal