Integrated Nutrient Management for Sustaining Soil Fertility Through Chickpea-Mungbean-T.Aman Cropping Pattern at Madaripur Region

Abstract

A field experiment was conducted on Chickpea-Mungbean-T.Aman cropping pattern at Pulses Research Sub-Station, Madaripur under Low Ganges River Floodplain Soils (AEZ-12) during 2007-08 and 2008-09 to find out the suitable fertilizer doses for this pattern. Four treatments were set up for each crop. For chickpea and mungbean, the treatments were T₁=Recommended fertilizer dose as per FRG, 2005 BARC (N₁₅P₁₈K₁₀S_<5Z_n0.5B_0.5); T₂=Soil test based fertilizer dose   (N₂₁P₂₃K₃₀S₁₈Z_n2B_1.5); T₃=Farmers practice (N₂₃P₁₅K₈); and T₄=Control (without fertilizer). For T.Aman, the treatments were T₁= Recommended fertilizer dose as per FRG, BARC (N₆₆P₇K₁₂S₆Z_n1); T₂=Soil test based fertilizer dose (N₁₃₀P₁₄K₇₆S₆Z_n1.5B_1.0); T₃=Farmer practice (N₉₀P₁₀K₁₅); and T₄=control.   Experimental results revealed that among the treatments the highest seed and stover/straw yields of chickpea (1524 kg/ha and 4049 kg/ha), mungbean (2208 kg/ha and 5121 kg/ha) and T.Aman (5414 kg/ha and 5615 kg/ha) were recorded in treatment T_<2. This treatment was significant at 5% level except seed yield of   chickpea in 2008-09. T₃ treatment showed significant difference with T₄ treatment.  The lowest seed and stover/straw yields of all the crops were recorded in control treatment (T₄). After completion of two years pattern cycle, the organic matter, total  nitrogen, phosphorus, sulphur, zinc, and boron were higher in treatment T₂. The   economic analysis revealed that the highest BCR (2.57) was recorded in T₂, while the lowest value (2.14) was noted in T₄. Therefore, the soil test based   fertilizer dose may be considered as suitable dose for this cropping pattern that ensure higher yield and increase soil fertility.

DOI: http://dx.doi.org/10.3329/bjar.v37i2.11226

Bangladesh J. Agril. Res. 37(2): 251-262, June 2012