COMPACTION OF SOILS - YIELD OF BARLEY IN GREENHOUSE AND FIELD

The objective Of this Study was to find the effect of artificial compa ction on yield of barley grain on Black Chernozem and Gray Luvisol soi ls in greenhouse and field experiments. In the greenhouse experiment, the compaction decreased grain and straw yield of barley in the 0 and 50 kg N ha-1 rates of urea mixed into soil. Under field conditions. th ere was a reduction of barley yield in 3 of the 8 experiments and an i ncrease of yield in one experiment due to compaction. On the average o f 8 field experiments, the yield differences between compacted and non compacted treatments were 212, 271 and 428 kg ha-1 for the zero-N cont rol, 50 and 100 kg N ha-1, respectively.