Özet:

This study conducted in Harran Ovas with the aim of determining the effects of the different plant frequency and mepiquat chloride (MC) application on the performance and performance elements of cotton at the normal October time, in this study Stoneville-453 and Fantom cotton varieties were used as plant material. The trials were established as three repetitive by the trial pattern of the divided parcels, in the 2006 and 2007 years at the normal October time (15 May). Varieties are set up to the main parsels, mepiquat chloride applications (control, scanning start 50 cc + flowering start 50 cc) to the lower parsels, while plant frequencies are set up to the lower parsels (70x20 cm, 70x5 cm, 35x5 cm) in the future. In the trials, each parcel was arranged in a row of 4 and 10 meters long. According to the research, the Stoneville-453 species gave the Fantom species (607.34 and 542.18 kg/day); the October frequency of 35x5 cm compared to the other two October frequencies (573.84 kg and 682.92 kg/day) greater mass cotton yield, and the MC applications cut the plant length while increased the mass cotton yield in the first year. In the first hand massed cotton ratio, the Fantom species was found to be more early than the Stoneville-453 species, the 35x5 cm October frequency came to harvest later than the other two frequencies; the species, MC applications and October frequencies did not affect the crust date, the October frequencies did not significantly affect the weight of cotton massed cotton.

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