Abstract
Tillage methods under irrigated soils in arid or semi-arid regions have not been studied extensively. Four pre-planting tillage methods: chisel plough and one disking ( T 1), mold-board plough and two diskings ( T 2), rotary tillage only ( T 3), and no-tillage ( T 4) were tried on full season corn ( Zea mays L.) on a calcareous clay soil. Results strongly favoured the chisel plough and one disking treatment over any other treatment, for it produced both maximum plant growth and highest silage corn yield. The no-tillage method resulted in the lowest yield.
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