Fertilizer Recommendation for Potato-Boro-T.Aman Cropping Pattern in Old Himalayan Piedmont Plain Soils of North-West Bangladesh

Abstract

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 T₅ at Birgonj, Dinajpur and T₃ at 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_7.5K₄₀S₆ at Debigonj, Panchagarh.

DOI: http://dx.doi.org/10.3329/jesnr.v7i1.22136

J. Environ. Sci. & Natural Resources, 7(1): 1-6 2014