Abstract
Conventional cotton tillage operations tend to be energyintensive. While reduced tillage systems have been shownto offer significant energy savings over conventional systems, growers have considered soil compaction to be a problem.Studies conducted at two sites, one lasting three years and the other six years, did not show any evidence of compactionincreasing with minimum tillage treatments over time, as indicated by soil penetration resistance values. However from springto fall, penetration resistance values for all tillage systems, including the conventional system, increased. The increase waslikely due to two factors: drier soil conditions in the fall, and compaction brought about by approximately 1 m (40 in.) of furrowirrigation water that was applied to produce the cotton crop.
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