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Total Nutrient Uptake by Grain Plus Straw and Economic of Fertilizer Use of Rice Mutation Stl-655 Grown Under Boro Season in Saline Area

M. H. Kabir
Department of Agriculture Chemistry, BAU, Mymensingh

N. M. Talukder
Department of Agriculture Chemistry, BAU, Mymensingh

M. J. Uddin
UAO, DAE

H. Mahmud
UAO, DAE

B. K. Biswas
UAO, DAE

Abstract/ Executive Summary:

An experiment was conducted at BINA (Bangladesh Institute of Nuclear Agriculture) substation, Satkhira on slightly calcareous silty clay soil during the boro season of 2009-2010 to investigate the effects of different combinations of inorganic fertilizers in order to achieve sustainable high yield goal in the STL-655 rice mutant cultivar. The six treatment combinations were: T₁ (absolute control), T₂ (N₆₀ P₂₀ K₄₀ S₁₀ Zn₁), T₃ (N₈₀ P₂₅ K₅₀ S₁₅ Zn_1.5), T₄ (N₁₀₀ P₃₀ K₆₀ S₂₀ Zn₂), T₅ (N₁₂₀ P₃₅ K₇₀ S₂₅ Zn₃) and T₆(N₁₄₀ P₄₀ K₈₀ S₃₀ Zn₄) that was laid out in a randomized complete block design (RCBD) with three replications having per plot size was 5m x 4m. The results revealed that grain and straw yields of STL-655 rice mutant responded significantly with the different treatment combinations. The highest grain (3.95 t/ha) and straw yield (7.38 t/ha) was obtained in T6 (Soil test basis high yield goal) treatment, which was significantly higher than all other treatments. The treatment T₆(N₁₄₀ P₄₀ K₈₀ S₃₀ Zn₄) caused an increase of 60% grain yield and 27% higher straw yield over the control. Nutrient uptake of N, P, K and S by grain of boro rice (STL-655 rice mutant) varied from 25.14 to 48.02, 5.40 to 8.14, 11.76 to 23.02 and 4.15 to 7.09 kg/ha, respectively. The N, P, K and S uptake by straw of boro rice (STL-655 rice mutant) varied from 20.36 to 35.85, 5.47 to 11.05, 59.01 to 159.6 and 9.54 to 12.97 kg/ha, respectively.

Keywords: Saline area, Mutant cultivar, High yield goal, Inorganic fertilizers

Location: BINA (Bangladesh Institute of Nuclear Agriculture) substation, Satkhira

Start Date: 20-12-2010

End Date: 25-04-2010

Program Area: Crop-Soil-Water Management

Commodity: Fertilizer

Objectives:

1. To ascertain optimum and economic rates of fertilizer for rice cultivation in saline area.

Methodology:

The experiment was conducted at BINA (Bangladesh Institute of Nuclear Agriculture) substation, Satkhira on slightly calcareous silty clay soil during the Boro season of 2009-2010 to investigate the effects of different combinations of inorganic fertilizers like N, P, K, S and Zn in order to achieve sustainable high yield goal in the STL-655 rice mutant cultivar. The six treatment combinations were: T₁ (absolute control), T₂ (N₆₀ P₂₀ K₄₀ S₁₀ Zn₁), T₃ (N₈₀ P₂₅ K₅₀ S₁₅ Zn_1.5), T₄ (N₁₀₀ P₃₀ K₆₀ S₂₀ Zn₂), T₅ (N₁₂₀ P₃₅K₇₀ S₂₅ Zn₃) and T₆ (N₁₄₀ P₄₀ K₈₀ S₃₀ Zn₄) that was laid out in a randomized complete block design (RCBD) with three replications having per plot size was 5m x 4m. N, P, K, S and Zn were applied as Urea, TSP, MP, gypsum and zinc oxide, respectively. Urea was applied in three equal splits. The first split was applied during final land preparation, the second split at the active tillering stage and the remaining split at booting stage/panicle initiation stage of the crop. Forty days old three healthy seedlings of boro rice (STL-655 rice mutant) were transplanted per hill in the experimental plots at a plant spacing of 20 cm x 15 cm on 20th December, 2010 and the crop was harvested at maturity on 25th April, 2011. All the cultural practices were done in time. Ten plants were randomly selected from each plot for data collection. Grain and straw samples were analyzed for the determination of N, P, K and S concentrations. The uptakes of these nutrients were also calculated from the yield and the nutrient concentration of grain and straw. The nutrient uptake was calculated by % of minerals constituent x grain/yield weight (kg/ha) divided by 100. All the data were statistically analyzed following the F-test and the mean comparisons were made by DMRT at the 5% level.

Source of Information: J. Environ. Sci. & Natural Resources, 4(2): 83-87, 2011; ISSN 1999-7361

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The results revealed that grain and straw yields of STL-655 rice mutant responded significantly with the different treatment combinations. The highest grain (3.95 t/ha) and straw yield (7.38 t/ha) was obtained in T₆ (Soil test basis high yield goal) treatment, which was significantly higher than all other treatments. The treatment T₆ (N₁₄₀ P₄₀ K₈₀ S₃₀ Zn₄) caused an increase of 60% grain yield and 27% higher straw yield over the control. Nutrient uptake of N, P, K and S by grain of boro rice (STL-655 rice mutant) varied from 25.14 to 48.02, 5.40 to 8.14, 11.76 to 23.02 and 4.15 to 7.09 kg/ha, respectively. The N, P, K and S uptake by straw of boro rice (STL-655 rice mutant) varied from 20.36 to 35.85, 5.47 to 11.05, 59.01 to 159.6 and 9.54 to 12.97 kg/ha, respectively.

Knowledge Management: Journal