rice straw incorporation decreased the sinkageresistance after puddling (C2Shallow tillage increased the penetration resistance more than deep tillage irrespective of rice strawincorporation. The difference in tensile strength and total porosity were small among the riceincorporation treatments at the 1st drainage (C2C1C0), but became more profound with increasingnumber of drainage because the tensile strength and total porosity decreased in C0, increased in C2,particularly under ST. The root weight was lower,
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