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Experimental study was carried out to evaluate the performance of mechanical transplanting technique using cotton variety G86. The transplanting experiments were conducted using a Holland type transplanter to evaluate the effect of four forward speeds (1.43, 1.77, 2.05 and 2.44km/h), three hill spacing (0.15, 0.2 and 0.25m) and four planting depths (5, 7, 10 and 12cm) compared with manual transplanting. Both mechanical and manual transplanting methods were undertaken at the same time. Effective field capacity, field efficiency, seedling miss index, seedlings multiples index, quality of feed index, amount of seedling rate and plant yield traits (h. first fruit, seed cotton yield/fed, lint cotton yield/fed, boll weight, lint percent and seed index) were determined. Results illustrated that increasing planting forward speed increased actual field capacity, affective field efficiency, seedling miss index, the quality of feed index and criterion function cost. While, seedling multiple index, total productivity and losses in productivity were decreased. Also results indicated that, maximum of effective field capacity; field efficiency and productivity were 0.711fed/h, 80.1% and 7.61kantar/fed, respectively. While minimum of seedling miss index, seedling multiple index and quality of feed index were 1.7%, 1.3% and 89.9% respectively. The optimum operational conditions of machine transplanting were at forward speed 1.77km/h, hill spacing of 0.15m and planting depth of 7cm at this condition total productivity was 7.41kentar/fed and total losses in productivity was 0.226kentar/fed.

EFFECTS OF MECHANICAL TRANSPLANTING TECHNIQUE ON PRODUCTIVITY FOR G86 COTTON VARIETY