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    Effects of Foliar Sulfur Applications on the Quality of Cotton Plant Fibre Under Water Stress Conditions
    (Inst Chemical Fibres, 2021) Candemir, Derya Kazgoz; Odemis, Berkant
    The research was conducted to determine the effects of Sulfur foliar applications on the fibre quality of cotton plants exposed to water stress at different growth stages in the Amik Plain (Hatay province, Turkey) in 2015 and 2016. Cotton plants were studied in three different developmental stages (vegetative growth period (VG); flowering and boll development period (FB) and boll opening period (BO)) and full irrigation was applied in some periods, while deficit irrigation was applied in the others. Sulfur fertiliser from foliar was applied in different doses (S-0: 0 ml da(-1), S-1: 150 ml da(-1), S-2: 250 ml da(-1), S-3: 350 ml da(-1)). The study was carried out with three replications according to the split plot design. In the research, the effects of the water deficit and sulfur dose applications on gin turnout and fibre quality characteristics at different growth stages were investigated. Results showed that the average spinning consistency index (SCI) decreased by 11.75% due to the water deficit (compared to the treatment of TTT, irrigation in all three crop developmental stages). Similar effects were observed in the fibre length, micronaire, fibre strength and uniformity index values, which were decreased by 7.31%, 4.07%, 5.89% and 2.17%, respectively. The average gin turnout of the irrigated treatment (TTT), in which there is no deficit irrigation, decreased by 2.5% compared to the control treatment (OOO). Similar effects were observed in fibre elongation and short fibre content values which were decreased by 8.43% and 14.60%, respectively. The average S-1 and S-3 sulfur doses increased the gin turnout by 0.44% and 0.35%, respectively, and the S-2 dose decreased it by 0.79%.
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    The effects of sulphur applications on cotton yield and parameters of yield under long-term water stress conditions
    (Parlar Scientific Publications, 2020) Candemir, Derya Kazgoz; Odemis, Berkant
    The study was carried out in the Amik Plain (Hatay province, Turkey) in 2015 and 2016 to determine the effects of foliar sulphur applications on the yield, leaf area index, leaf moisture content and dry matter parameters of cotton plants. In the study, the growth of the cotton plant was divided into three different stages: a) vegetative growth period (V G), b) flowering and boll development period (F B) and c) boll opening period (B O). While at some stages of the growth, a water equivalent to the field capacity was applied (T), at some stages, irrigation water was not supplied (O). During each developmental period, foliar elemental sulphur was applied to the cotton plants at different doses (S 0 : 0 ml da- 1, S 1 : 150 ml da- 1, S2: 250 ml da- 1, S3: 350 ml da- 1). The amount of irrigation water ranged from 91 to 1136 mm and from 149 to 1078 mm in 2015 and 2016, respectively. Evapotranspiration ranged from 311 to 1046 mm and from 303 to 1182 mm in 2015 and 2016. The yield value (480.12 kg da- 1 in 2015 and 499.8 kg da- 1 in 2016) of the treatment of full irrigation at every period (T T T) was determined to be 294.58, and 351.2 kg da- 1 higher than the non-irrigated treatment, with the yield value of 185.54 and 148.6 kg da- 1, respectively. Considering the dry matter amounts in the harvest period, the highest values were obtained in T T T (in 2015 and 2016) from the S3 dose. In the comparison of the aforementioned treatments to the S0 dose, where the lowest amount of dry matter was observed, it was determined that the S3 dose led to an increase of respectively 36.13%, and 67.33% in dry matter. In both years, the lowest yield value for OOO was obtained from the non-sulphur treatment (S 0 ) . The highest yield was obtained from the S3 and S2 doses, in 2015 and 2016, respectively. The yield increased by 59.58% and 27.26% when the values were compared to the dose of S0. © 2020 Parlar Scientific Publications. All rights reserved.
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    THE EFFECTS OF SULPHUR APPLICATIONS ON COTTON YIELD AND PARAMETERS OF YIELD UNDER LONG-TERM WATER STRESS CONDITIONS
    (Parlar Scientific Publications (P S P), 2020) Candemir, Derya Kazgoz; Odemis, Berkant
    The study was carried out in the Amik Plain (Hatay province. Turkey) in 2015 and 2016 to determine the effects of foliar sulphur applications on the yield, leaf area index, leaf moisture content and dry matter parameters of cotton plants. In the study, the growth of the cotton plant was divided into three different stages: a) vegetative growth period (VG), b) flowering and boll development period (FB) and c) boll opening period (BO). While at some stages of the growth, a water equivalent to the field capacity was applied (T), at some stages, irrigation water was not supplied (0). During each developmental period, foliar elemental sulphur was applied to the cotton plants at different doses (So: 0 ml da(-1), Si: 150 ml da(-1), S-2: 250 ml da(-1), S-3: 350 ml da(-1)), The amount of irrigation water ranged from 91 to 1136 mm and from 149 to 1078 mm in 2015 and 2016, respectively, Evapotranspiration ranged from 311 to 1046 mm and from 303 to 1182 mm in 2015 and 2016. The yield value (480.12 kg da' in 2015 and 499.8 kg da(-1) in 2016) of the treatment of full irrigation at every period (TTT) was determined to be 294.58, and 351.2 kg da(-1) higher than the non-irrigated treatment, with the yield value of 185.54 and 148.6 kg da(-1), respectively. Considering the dry matter amounts in the harvest period, the highest values were obtained in TTT (in 2015 and 2016) from the S-3 dose. In the comparison of the aforementioned treatments to the So dose, where the lowest amount of dry matter was observed, it was determined that the S-3 dose led to an increase of respectively 36.13%, and 67.33% in dry matter. In both years, the lowest yield value for 000 was obtained from the non-sulphur treatment (So). The highest yield was obtained from the S-3 and S-2 doses, in 2015 and 2016, respectively, The yield increased by 59,58% and 27.26% when the values were compared to the dose of S.