تلخیص
Soil acidification threatens dry land crop production in the soils of entire Sylhet region in Bangladesh.
Our objective was to assess the efficacy of lime doses with agroeconomic performances of wheat
varieties to lower soil acidity and increase wheat production in a direct-seeded system. Field trail was
carried out at Eastern Surma Kushiara Flood Plain soil (AEZ 20) of Sylhet in the three consecutive
years of 2010-11, 2011-12 and 2012-13. Treatments of wheat varieties (Bijoy, Prodip, Sufi, BARI
Gom-25 and BARI Gom-26) and lime (0 and 1.5 tha-1) arranged in a split-plot design. Lime was
applied in main plots and varieties are distributed randomly in sub plots. Soil was sampled in
November 2010 to assess pH and Low pH was evident at the depth of fertilizer placement (0-30 cm).
Broadcast lime increased pH up to 6.0 in 2013. The result revealed that most of the yield component
viz. spikes m-2, thousand grain weight and grain yield of wheat was significantly influenced by liming.
There were variations in lime response among the wheat varieties. Results observed that all the
varieties performed well in the liming plot (3.39-4.09 tha-1) and BARI Gom-26 produced the
maximum yield (4.09 tha-1) among them compare to non liming one (2.48-2.97 tha-1). Cost benefit
analysis indicated that the highest BCR was recorded in BARI Gom-26 in the liming plot that was
24% more compared to non liming plot. However, the index of relative adaptability of wheat was the
maximum in BARI Gom-26 and it could be cultivated at acidic soil in Sylhet, Bangladesh.
Md. Rayhan Shaheb, Mahmudul Islam Nazrul, M. Ataur Rahman. (2014) PRODUCTION POTENTIAL AND ECONOMICS OF WHEAT AS INFLUENCED BY LIMING IN NORTH EASTERN REGION OF BANGLADESH, Asian Journal of Agriculture and Biology, Volume 2, Issue 2.
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