Abstract
A field experiment was conducted to evaluate the effects of various tillage depths on soil properties and wheat yield. Different implement used were: rotavator, modified rotavator, spade cultivator, chisel plow and combination of chisel and rotavator. The results showed significant effect of these tillage implements on soil properties and yield of crop. All the tillage implements showed nearly same bulk density on top layer but large variation was noted at greater depth. Penetration resistance (PR) at top layer (0-10 cm) was minimum 0.31 M Pa with chisel plow + rotavator and maximum 2.46 M Pa at depth of 20-30 cm with rotavator. The spade cultivator produces nearly the same bulk density for the whole depth of 0-30 cm varying from 1.16 to 1.23 M Pa. The minimum bulk density of 1.23g cm-3 at a depth of 20-30 cm was noted with spade cultivator and a maximum of 1.99 g cm-3 with rotavator. The highest wheat grain yield of 4070 kg ha-1 was achieved with spade cultivator and minimum of 2654 kg ha-1 with rotavator. The results generally showed that tillage depth effectively altered soil moisture content, soil PR, soil bulk density and crop yield
M. Ahmad1, H. Abdullah2 , , M. Iqbal1, , M. Umair1 , M.U. Ghani1. (2010) Effect of deep tillage on soil properties and crop (wheat) yield , The Journal Soil & Environment , Volume 29, Issue 2.
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