TY - JOUR TT - Effect of Different Sowing Dates on Cotton (Gossypium hirsutum L.) Fiber Color at Double Crop Growing Conditions AU - Çopur, Osman AU - Polat, Davut AU - Odabaşıoğlu, Ceren PY - 2018 DA - March DO - 10.29050/harranziraat.337782 JF - Harran Tarım ve Gıda Bilimleri Dergisi PB - Harran University WT - DergiPark SN - 2587-1358 SP - 67 EP - 72 VL - 22 IS - 1 LA - en KW - Cotton KW - Sowing Date KW - Cultivars N2 - Cottonfiber color is determined by the effect of fiber reflectance (Rd) and fiberyellowness (+ b), which are important standards for determining cotton price.This study was conducted to determine effects of different sowing times onfiber color components in widely grown four cotton varieties in 2015 and 2016under Harran Plain double crop conditions. Theexperiments were conducted on the experimental area of Agricultural Faculty ofHarran University at Eyyubiye Campus. Seeds of cotton cultivars were sownaccording to sowing dates with completely randomized split plot experimentaldesign with three replications. Sowing dates (June 1st, June10th , and June 20th) were keptin main plot and varieties (Stoneville 468, BA 119, DP 499 and PG 2018) were in sub plot. Four cotton varieties (Stoneville 468,BA 119, DP 499 and PG 2018), which are certified for Harran Plain, were used asplant material. As the result of thestudy, the fiber color of Şanlıurfa province, where all varieties are inthe light and white class according to the HVI color scale, but white color ischanging from standard 2 to standard 3 and standard 4 grade. All the varieties used in the experiment wereaffected by sowing time in terms of fiber color and whiteness of color wasfound to be dulled with the delay in the sowing time. For this reason, earlyand late harvests should not be mixed and should be stored separately. CR - Aguiar, P.A., Penna, J.C.V., Freire, E.C., Melo, L.C., 2007. 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Harran University, Graduate School of Natural and Applied Sciences, Department of Field Crops, MSc Thesis, pp:74, Şanlıurfa- Turkey (Turkish). UR - https://doi.org/10.29050/harranziraat.337782 L1 - https://dergipark.org.tr/en/download/article-file/444349 ER -