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Fertilizer Recommendation for Potato-boro-t.aman Cropping Pattern in Old Himalayan Piedmont Plain Soils of North-west Bangladesh

M. M. Ali
Soil Science Division, Bangladesh Institute of Nuclear Agriculture, Mymensingh

N. Sobhan
Soil Science Division, Bangladesh Institute of Nuclear Agriculture, Mymensingh

R. R. Sarker
Soil Science Division, Bangladesh Institute of Nuclear Agriculture, Mymensingh

M. H. Rahman
Soil Science Division, Bangladesh Institute of Nuclear Agriculture, Mymensingh

Abstract/ Executive Summary:

Field experiments were carried out with Potato-Boro-T. aman cropping pattern at Birgonj, Dinajpur and Debigonj, Panchagarh during the consecutive years of 2011-12 to 2012-13 in the Old Himalayan Piedmont Plain Soils under agroecological zone (AEZ) 1 of North-West Bangladesh. The experiments were designed with eight treatments and laid out in randomized complete block design (RCBD) with three replications. The treatment combinations were: T₁ (100%STB), T₂ (T₁ + 25% N), T₃ (T₁ + 25% NP), T₄ (T₁ + 25% NK), T₅ (T₁ + 25% PK), T₆ (T₁ + 25% NPK), T₇ (75% of T₁) and T₈ (Control). Results indicated that application of different fertilizers significantly affected the grain yield at all of the locations. The highest yield was found in treatment T₆ (T₁ + 25% NPK). Statistically identical yield was observed in treatments T₃, T₄ and T₅at Birgonj, Dinajpur and T₃at Debigonj, Panchagar. All the treatment combinations gave significantly higher grain yield over the control at both of the locations. The highest straw yield was found in treatment T₆ (T₁ + 25% NPK). Statistically identical straw yield was found in T₃ and T₄ at Birgonj, Dinajpur and T₁, T₄ and T₅ at Debigonj, Panchagarh. Significantly the lowest yield was obtained in control treatment (T₈) in both of the locations. The highest total N uptake was observed in treatment T₆ and a similar trend of total N uptake was observed for P uptake in both the locations. Treatment T₆ showed the highest uptake of total K. The highest uptake of total S was observed in treatment T₆ at Birgonj, Dinajpur and T₃ at Debigonj, Panchagarh. However, the lowest total N, P, K and S uptake was observed in control treatment (T₈) at both of the locations. The partial economic analysis showed the highest MBCR of 4.57 in T₃ at Birgonj, Dinajpur and 4.75 in T₆ treatments at Debigonj, Panchagarh respectively. Fertilizer doses recommended for Potato-Boro-T.aman pattern were N₁₆₉P₃₁K₁₃₅S₁₂Zn₂B₁ - N₁₇₅P₁₀K₇₅S₁₀Zn₁B_0.5 - N₈₀P_7.5K₃₂S₈ at Birgonj, Dinajpur and N₁₈₈P₂₃K₁₆₉S₈Zn₂B₁ - N₁₈₈P₁₀K₉₄S₈Zn₁B_0.5 - N₈₄P_7.5K₄₀S₆at Debigonj, Panchagarh.

Keywords: Fertilizer, Potato-Boro-T. aman pattern, Nutrient balance

Location: Birgonj, Dinajpur and Debigonj, Panchagarh

Start Date: 00-11-2011

End Date: 00-11-2013

Program Area: Crop-Soil-Water Management

Commodity: Rice, Rice, Potato, Fertilizer

Objectives:

1. To develop fertilizer recommendation for Potato-Boro-T. aman pattern in the Old Himalayan Piedmont Plain Soils under AEZ 1.

Methodology:

The land was well prepared before transplantation. After uniformly leveling, the experimental plots were laid out in randomized complete block design (RCBD) with three replications. The unit plots area was 5mx4m. Eight treatment combinations of fertilizers were used in the experiments. The treatment combinations were: T₁(100%STB), T₂ (T₁ + 25% N), T₃ (T₁ + 25% NP), T₄ (T₁ + 25% NK), T₅ (T₁ + 25% PK), T₆ (T₁ + 25% NPK), T₇ (75% of T₁) and T₈ (Control). The sources of N, P, K, S and Zn were urea, TSP, MoP, gypsum and zinc oxide, respectively. Three healthy seedlings of Binadhan-7 rice of 25-30 days old were transplanted per hill in the plots. Fertilizers were applied to each plot as per treatment. The full dose of all fertilizers except urea was applied as basal to each individual plots during final land preparation. The fertilizers were incorporated into the soils. The first split (1/3) of N was applied within 10 days after transplanting. The second split (1/3) of N was applied at maximum vegetative growth stage and incorporated with the soil. The third split (1/3) of N was applied at or before P.I. stages. Pest control and other intercultural practices like irrigation, etc. were given as and when necessary. Data on yield and yield contributing characters of different crops of the cropping pattern were recorded and statistically analyzed.The recorded data were compiled and tabulated properly. The recorded data were statistically analyzed to find out the significance of variance resulting from the experimental treatments on various plant characters. Analysis of Variance (ANOVA) was done following RCBD with the help of a computer package program MSTAT and mean differences were adjudged by Duncan's Multiple Range Test.

Source of Information: J. Environ. Sci. & Natural Resources, 7(1): 01- 06, 2014; ISSN 1999-7361

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The highest yield, nutrient uptake and net benefit found in treatment T₆ (T₁ + 25% NPK) both at Birgonj, Dinajpur and Debigonj, Panchagarh. From T₆ treatment, doses of fertilizer nutrients N₁₆₉P₃₁K₁₃₅S₁₂Zn₂B₁ - N₁₇₅P₁₀K₇₅S₁₀Zn₁B_0.5 - N₈₀P_7.5K₃₂S₈ at Birgonj, Dinajpur and N₁₈₈P₂₃K₁₆₉S₈Zn₂B₁ - N₁₈₈P₁₀K₉₄S₈Zn₁B_0.5- N₈₄P_7.5K₄₀S₆in kg ha^-1 at Debigonj, Panchagarh were recommended for Potato-Boro-T.aman cropping pattern in the Old Himalayan Piedmont Plain Soils under AEZ 1 of North-West Bangladesh.

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