Effects of micronutrients on organic matter status and pH changes in soil
1989
Talukder, M.K.U. | Sattar, M.A.
A Non-Calcareous Dark Grey Floodplain soil was treated with MnSO4, FeSO4, ZnSO4 and CuSO4 each at the rates of 0, 1, 10, 100 and 1000 ppm levels, and incubated for 50 days at room temperature by creating a field capacity condition of the soil. Soil organic matter content and Ph values were determined after 0, 5, 10, 20, 30, 40 and 50 days of observation. The organic matter status slightly changed by using the different levels of four micronutrient carrier fertilizers. The yield slightly decreased with the progress of incubation time, and again they decreased with increasing the levels of the fertilizers. The results slightly varied within the four fertilizers. The pH values decreased gradually upto 20-30 days, and then slightly increased after 40 and 50 days of observation by using 1, 10, and 100 ppm levels of all four fertilizers but with high dosage (1000 ppm), the Ph value decreased upto 50 days. The pH values linearly decreased with increasing the levels of fertilizers. FeSO4 and CuSO4 largely reduced the pH values with 1000 ppm level. Initial pH of the soil was neutral which became strongly acidic in character (pH value from 7, 2, to 4-3) by using micronutrient fertilizers. The results of organic matter contents and pH change were applied to the t-test where the yields were compared within four fertilizers.
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