Özet:

Land studies were conducted in the 2012-2013 years in the land of Kahramanmaraş Eastern Mediterranean Transit Generation Agricultural Research Station for the investigation of the effects of three different row distances (50, 70 and 90 cm) in the determination of the critical period in foreign herb control in cotton.  The four-parameter log-logistic model is converted according to the proportional values of the cultivated plant productivity of the foreign herbs and foreign herbs period. The proportional productivity of cotton has been affected by a foreign herb or a foreign period of output, without taking into account the inter-range distance. As the foreign herb period increased, the cotton production has been significantly decreased. The critical period for the control of foreign herbs in cotton is calculated on the basis of the proportional productivity values based on acceptable product losses of 2.5, 5 and 10%. At a row distance of 50 cm, the critical period in 5% acceptable loss of efficiency was 117-526 GGD in 2012, while this value was calculated 124-508 GGD in 2013. 70 cm was 98-661 GGD in 2012, while in 2013 it was between 144-616 GGD and 90 cm in 2013 it was 80-771 GGD, while in 2013 it was between 83-755 GGD. These findings may be beneficial for cotton producers in improving the benefits of the foreign herbal control program at different range distances and the price efficiency.

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