Abstract
The study was carried out in Al-Hawija / Kirkuk in one of farmer field piece that cultivated with Lachata cotton variety. The cultivated area about 1/4 hectare with Lachata variety by using three planting distance ( 10, 20, 30 cm ) and three insecticides Runner (Methoxyfenozide)1ml/L, Dimilin (48%) (Diflubenzuron)1.25ml/L and Actara ( 25WG) ( Thiamethoxam) 0.2 gm/L. The results showed that the lowest infestation 6.608% recorded at 30cm distance during blooming stage but the highest infestation 10.742% with spiny bollworm recorded at 10cm distance. The results also indicated that lowest infestation percentage 2.589% recorded with Dimillin insecticide and the highest infestation 10.511% with Runner insecticide. The results of study showed the effect of planting distance on cotton boll weight so the highest weight 4.283 gm recorded at 30cm but the lowest weight 3.708 gm recorded at 10 cm.
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