The effects of different planting date on agronomical and technological properties in cotton (Gossypium hirsutum L.) under short season production conditions

This study was made in 2012, in Aydın conditions in order to determine the effects of different sowing dates on agricultur a land technological properties of cotton grown as a after cropt after wheat. In this study, as the material, 10 cotton varieties/lines ( Ozbek 100, Ozbek 105, Cosmos, ST 373, Flash, Flora, Gloria, Julia, Fomosa, varieties and ADÜ Pure Line) which belongs to earliest group have been used. On 1 June and 15 June; the trail, according to the randomized complete block design with two factors, has been established as three replications. In this study; sixteen features, including morphological, agronomical and technological, are examined. As a result of the delay in sowing, it is observed that there is a considerable decrease in plant height, branch wood, fruit branch,number of cocoons, seed cotton weight per cocoons and seed cotton yield; that scalloping is earlier, that flowering is delayed significantly, and also that finer fibers occurred in considerable amount. Althought here was a significant difference among the varieties in terms of efficiency, ADÜ Pure Line shows the best performance with the varieties of Cosmos,ST 373, Gloria and Famosa. Keywords: Cotton product in short season conditions, sowing date, yield and fiber guality properties