Laboratory Observations on tbe Effect of Soil Compaction on Slug Damage to Winter Wheat

SUMMARY When the aggregates of fairly dry, medium‐coarse soil were broken down and firmed over the seed by moderate or heavy pressure, slug damage was reduced. Coarse soil aggregates did not break down so well, particularly under heavy pressure; many seeds remained exposed and were damaged. The seed was also protected by deep planting, with the penalty of late emergence of the seedlings.