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Effect of Different Tillage Systems on Some Physical and Chemical Properties of a Silt Loam Soil in Rice Field

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Author(s): S.M.K. Alam | M.A. Matin | M.A. Hossain | M.K. Uddin

Journal: Journal of Biological Sciences
ISSN 1727-3048

Volume: 2;
Issue: 8;
Start page: 524;
Date: 2002;
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Keywords: Tillage systems | physical | chemical properties | silt loam | rice

ABSTRACT
A field experiment was carried out to study the effect of different tillage practices on some soil physical and chemical properties. The soil was calcareous grey belonging to Sonatala series of Old Brahmaputra flood plain soil. The treatments comprised of To, T1(CP2), T2(CP3), T3(CP4), T4(PT2), T5(PT3) and T6(PT4). The bulk density (1.20 g cm -3) was h igher in To(no tillage) treatment than that of any other treatment. The lowest bulk density (0.86 g cm -3) was found at T6 (PT4) treatment. Bulk density significantly varied within the depths. The highest bulk density was recorded in 20-30 cm soil depths and the lowest was 0-10 cm soil depth. Air filled porosity and soil moisture content increased remarkably by T6(PT4) treatment compared to control. The highest organic matter was 1.60% and the lowest was 0.78% under To(control) and T6(PT4) treatment respectively. The NH4-N, available S, exchangeable K significantly influenced due to tillage operation whereas NO3-N, available P and exchangeable Ca did not respond significantly. Available N, P, S, exchangeable K and Ca decreased with the increasing of depth.
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