Field trails carried out in sandy soils to study the influence of compaction under rainfed conditions on the physical properties of soils and crop yields indicated that by compaction of soil by passing 400 kg roller (1 metre width) ten times 24 hours after rainfall, the bulk density was increased in the subsoil layers upto 40 cm the K (sat) values decreased in the 20-30 cm layer and total porosity decreased by 18.7 per cent in 20-30 cm layer. These changes brought about an yield increase of 18.8 per cent in the first crop. The effect of compaction persisted upto the third crop.
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