Determination of the effects of tillage on the productivity of a sandy loam soil using soil productivity models

Based on the hypothesis that soil properties and productivity components should be affected by different tillage methods, field laboratory experiments were conducted to study effects of zero (ZT), one pass disc plough (P), plus harrow (PH) two passes (PHH) distribution bulk density, available water capacity, pH, organic matter, phosphorus, iron oxide aluminium at depths, their productivity. The matter phosphorus found increase with degree tillage, while decrease tillage. results show index was significantly (P ≤ 0.05) methods