Abstract :
Abstract: Field experiments were conducted to evaluate cotton growth and yield response to nitrogen and sulfur applications at the experimental areas of Department of Field Crops, Çukurova University, Adana, Turkey, in 2011 and 2012. Sulfur treatments of 0, 15, 30, 45, and 60 kg S ha^-1 were broadcast at planting. Nitrogen treatments of 0, 60, 120, 180, and 240 kg N ha^-1 were divided in to three dosage. Important increases in number of fruiting branches and open bolls per plant and seed cotton yield were measured at 30 kg S ha^-1 while no significant increase was observed at 60 kg S ha^-1. The highest number of open bolls per plant, seed cotton yield and boll weight were observed with the treatment consisting of 45 kg S ha^-1 and 120 kg N ha^-1. The seed cotton yield and boll weight tended to decrease as more N was applied however they were increased when N was applied with S. The N application had positive response on yield with S application and increasing N application in these situation positively affected on yield also. Joint effects of N and S on leaf nitrogen and sulfur content were found. It can be concluded that 120 to 180 kg ha^-1 nitrogen and 45 to 60 kg ha^-1sulfur applications rates had better results than the rest of other N and S combinations.
NaturalLanguageKeyword :
Cotton , leaf nitrogen content , number of open bolls per plant , seed cotton yield
