Unexpected rainfall in harvest season has a detrimental effect on cotton lint color grade and germination rate and cause economic losses for farmers, seed producers and manufacturers. This study was conducted to elucidate the effects of different rainfall amounts on cotton technological characteristics and to evaluate the response of different cultivars in the harvest season of 2014 and 2015. Cotton bolls were exposed to 0 (control), 20, 35, 65, 95 and 125 mm of precipitation. The effects of rainfall were determined in GSN-24, Claudia, Gloria, ST-373, Flash, Carisma and ST-468 cotton cultivars (Gossypium hirsutum L.). The responses of cultivars to different cumulative rainfall were significant for lint color grade and seed germination rate. The linear curve in the decreasing direction according to the highest R2 value was evaluated for germination rate (%), reflectance (Rd), trash count and trash area (%) whereas the polynomial curve was more likely for yellowness (+b). The effects of increased rainfall amounts on all observed characters were unfavorable. The different responses of cultivars indicated that the cultivars with the least loss for lint color grade and germination rate in seed production could be recommended in terms of being highly profitable.
Anonymous, (2005). International rules for seed testing. Edition 2005. International Seed Testing Association. http://www.seedtest.org/en/seed-analyst. (Accessed Date: 07.01.2022).
Anonymous, (2007). Cotton production and management guidelines for the Ord River Irrigation Area (ORIA). http://www.insidecotton. com/xmlui/handle/1/204. (Accessed Date: 15.01.2022).
Aspland, J.R. & Williams, S.A. (1999). The effect of cotton grade on the color yield of dyed goods. Textile Chemist & Colorist 23(2), 23-25.
Bednarz, C.W., Shurley, W.D. & Anthony, W.S. (2002). Losses in yield, quality, and profitability of cotton from improper harvest timing. Agronomy Journal 94(5), 1004-1011. https://doi.org/ 10.2134/agronj2002.1004.
Buxton, D.R., Stapleton, H.N., Makki, Y. & Briggs, R.E. (1973). Some effects of field weathering of seed cotton in a desert environment. Agronomy Journal 65(1), 14-17. https://doi.org/10.2134/ agronj1973.00021962006500010005x.
Columbus, E.P., Bel, P.D. & Robert, K.Q. (1990). Maintaining cotton quality. Transactions of the ASAE 33(4), 1057-1065. https://doi.org/10.13031/ 2013.3143.
Duckett, K., Zapletalova, T., Cheng, L., Ghorashi, H. & Watson, M. (1999). Color grading of cotton Part I: spectral and color image analysis. Textile Research Journal 69(11), 876-886. https://doi.org/ 10.1177/0040517599069011.
Hake, K., Banks, J.C., Bourland, F., Sasser, P., Tugwell, P. & Williford, R. (1992). Cotton physiology today. Newsletter of the cotton physiology education program national cotton council. www.cotton.org/tech/physiology/cpt/fiberquality/upload/CPT-Nov92. (Accessed Date: 07.01.2022).
Heimona, S. & Wilson, L. (2017). How much rain is too much? The impact on cotton color grade. The Australian Cotton Grower 38(1), 28-30.
JMP, (2018). SAS JMP Statistics 14.0 for Windows. Cary, NC.
Luo, Q., Bange, M. & Johnston, D. (2016). Environment and cotton fibre quality. Climatic Change 138(1), 207-221. https://doi.org/10.1007/ s10584-016-1715-0.
Mayfield, W.D. (1989). The effects of ginning on cotton fiber quality. Melliand Textilberichte 70, 725-728.
Parvin, D.W., Martin, S.W., Cooke, F. & Freeland, B.B. (2005). Effect of harvest season rainfall on cotton yield. Journal of Cotton Science 9(3), 115-120.
Shurley, D., Bednarz, C., Anthony, S. & Brown, S.M. (2004). Increasing cotton yield, fiber quality, and profit through improved defoliation and harvest timeliness. University of Georgia Cooperative Extension Service Bulletin 1252. http://www.ces. uga.edu/Agriculture/agecon/pubs/comm/increasingcot.pdf. (Accessed Date: 12.01.2022).
Silvertooth, J.C. (2001). Crop management for optimum fiber quality and yield. The University of Arizona. Cooperative Extension. http://cals. arizona.edu/pubs/crops/az1219.pdf. (Accessed Date: 10.01.2022).
Williford, J.R. (1992). Influence of harvest factors on cotton yield and quality. Transactions of the ASAE 35(4), 1103-1107. https://doi.org/10.13031/2013. 28706
Xu, B., Fang, C., Huang, R. & Watson, M.D. (1997). Chromatic image analysis for cotton trash and color measurements. Textile Research Journal 67(12), 881-890. https://doi.org/10.1177/00405175 9706701204.
Pamukta (Gossypium hirsutum L.) Hasat Öncesi Yağışların Çimlenme ve Elyaf Renk Değerleri Üzerine Etkisi
Hasat döneminde gerçekleşen yağışlar pamukta elyaf renk derecesi ve tohum çimlenme oranını olumsuz etkilemekte ve çiftçi, tohumluk üreticisi ve tekstilci için ekonomik kayıplara neden olmaktadır. Bu çalışma hasat öncesi farklı miktarlarda oluşan yağışların pamukta lif teknolojik özelliklerine olan etkisini ve farklı çeşitlerin yağışlara olan tepkilerinin belirlenmesi amacıyla 2014 ve 2015 yıllarında yürütülmüştür. Kozalar kontrol (0 mm) ile birlikte 20, 35, 65, 95 ve 125 mm yağışa maruz bırakılmıştır. Yağışın GSN-24, Claudia, Gloria, ST-373, Flash, Carisma ve ST-468 çeşitlerine etkisi belirlenmiştir. Çeşitlerin elyaf renk değeri ve çimlenme oranı bakımından toplam yağışa olan tepkileri önemli bulunmuştur. En yüksek belirleme katsayısına (R2) göre çimlenme oranı (%), yansıma (Rd), yabancı madde miktarı ve alanı (%) yönünden azalan düzeyde doğrusal regresyon eğrisi, buna karşın sarılık (+b) için polinomiyal eğri bulunmuştur. Çalışmanın sonucunda yüksek kazanç için lif kalite değerleri yağış miktarından olumsuz yönde daha az etkilenen ve çimlenme oranı kaybı en az olan çeşitlerin önerilebileceği sonucuna varılmıştır.
Anonymous, (2005). International rules for seed testing. Edition 2005. International Seed Testing Association. http://www.seedtest.org/en/seed-analyst. (Accessed Date: 07.01.2022).
Anonymous, (2007). Cotton production and management guidelines for the Ord River Irrigation Area (ORIA). http://www.insidecotton. com/xmlui/handle/1/204. (Accessed Date: 15.01.2022).
Aspland, J.R. & Williams, S.A. (1999). The effect of cotton grade on the color yield of dyed goods. Textile Chemist & Colorist 23(2), 23-25.
Bednarz, C.W., Shurley, W.D. & Anthony, W.S. (2002). Losses in yield, quality, and profitability of cotton from improper harvest timing. Agronomy Journal 94(5), 1004-1011. https://doi.org/ 10.2134/agronj2002.1004.
Buxton, D.R., Stapleton, H.N., Makki, Y. & Briggs, R.E. (1973). Some effects of field weathering of seed cotton in a desert environment. Agronomy Journal 65(1), 14-17. https://doi.org/10.2134/ agronj1973.00021962006500010005x.
Columbus, E.P., Bel, P.D. & Robert, K.Q. (1990). Maintaining cotton quality. Transactions of the ASAE 33(4), 1057-1065. https://doi.org/10.13031/ 2013.3143.
Duckett, K., Zapletalova, T., Cheng, L., Ghorashi, H. & Watson, M. (1999). Color grading of cotton Part I: spectral and color image analysis. Textile Research Journal 69(11), 876-886. https://doi.org/ 10.1177/0040517599069011.
Hake, K., Banks, J.C., Bourland, F., Sasser, P., Tugwell, P. & Williford, R. (1992). Cotton physiology today. Newsletter of the cotton physiology education program national cotton council. www.cotton.org/tech/physiology/cpt/fiberquality/upload/CPT-Nov92. (Accessed Date: 07.01.2022).
Heimona, S. & Wilson, L. (2017). How much rain is too much? The impact on cotton color grade. The Australian Cotton Grower 38(1), 28-30.
JMP, (2018). SAS JMP Statistics 14.0 for Windows. Cary, NC.
Luo, Q., Bange, M. & Johnston, D. (2016). Environment and cotton fibre quality. Climatic Change 138(1), 207-221. https://doi.org/10.1007/ s10584-016-1715-0.
Mayfield, W.D. (1989). The effects of ginning on cotton fiber quality. Melliand Textilberichte 70, 725-728.
Parvin, D.W., Martin, S.W., Cooke, F. & Freeland, B.B. (2005). Effect of harvest season rainfall on cotton yield. Journal of Cotton Science 9(3), 115-120.
Shurley, D., Bednarz, C., Anthony, S. & Brown, S.M. (2004). Increasing cotton yield, fiber quality, and profit through improved defoliation and harvest timeliness. University of Georgia Cooperative Extension Service Bulletin 1252. http://www.ces. uga.edu/Agriculture/agecon/pubs/comm/increasingcot.pdf. (Accessed Date: 12.01.2022).
Silvertooth, J.C. (2001). Crop management for optimum fiber quality and yield. The University of Arizona. Cooperative Extension. http://cals. arizona.edu/pubs/crops/az1219.pdf. (Accessed Date: 10.01.2022).
Williford, J.R. (1992). Influence of harvest factors on cotton yield and quality. Transactions of the ASAE 35(4), 1103-1107. https://doi.org/10.13031/2013. 28706
Xu, B., Fang, C., Huang, R. & Watson, M.D. (1997). Chromatic image analysis for cotton trash and color measurements. Textile Research Journal 67(12), 881-890. https://doi.org/10.1177/00405175 9706701204.
Balcı, Ş., Çınar, V., & Ünay, A. (2023). The Investigation of Effects of Pre-Harvest Rainfall on Lint Color Grade and Seed Germination Rate in Cotton (Gossypium hirsutum L.). Kahramanmaraş Sütçü İmam Üniversitesi Tarım Ve Doğa Dergisi, 26(1), 118-125. https://doi.org/10.18016/ksutarimdoga.vi.1061028