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    Effect of foliar potassium and micronutrient additions on yield and fiber quality of cotton (Gossypium hirsutum L.)
    (Wfl Publ, 2009) Temiz, Mefhar; Koca, Yakup Kenan; Aydin, Firat; Karahan, Ender
    The use of high-yielding cultivars that remove high amounts of potassium and micronutrients from the soil lead to potassium and micronutrients deficiencies in Turkey. An important objective for using macro and micronutrients in cotton is to balance vegetative and reproductive growth as well as to improve lint yield and fiber quality. Field study was conducted in a randomized complete block design with three replications under irrigated conditions in the Southeastern Anatolia Region of Turkey, to determine the effects of foliar potassium, zinc and micronutrient treatments on yield and fiber quality of cotton (Gossypium hirsutum L.). Compared with the untreated control, application of foliar potassium, zinc and micronutrients insignificantly affected lint turnout, seed-cotton yield, and fiber quality parameters. Furthermore, application of foliar potassium, zinc and micronutrients increased Zn2+, Cu2+, Fe3+, Mn2+, Mg2+, Na2+, Ca2+ and K+ rates in the leaf compared with the untreated control.
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    Effect of Paclobutrazol on Fiber Quality of Cotton (Gossypium hirsutum L.)
    (Asian Journal Of Chemistry, 2009) Temiz, Mefhar; Cimen, Ismail; Karahan, Ender
    An important objective for using plant growth regulators in cotton is to balance vegetative and reproductive growth as well as to improve lint yield and fiber quality. Field study was conducted in a randomized complete block design with 4 replication, under irrigated conditions in the Southeastern Anatolia Region of Turkey to determine fiber technological properties of cotton to soil applications of 0.05 and 0.1 g/m(2) doses of the paclobutrazol, gibberellin biosynthesis inhibitors, were applied once after the first and second irrigation for the growing season. Compared with the untreated control, application of paclobutrazol significantly affected fiber micronaire, uniformity and short fiber content parameters, whereas there were no significant differences in fiber strength and length parameters.
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    Effects of Humic Substances on Cotton (Gossypium hirsutum L.)
    (Asian Journal Of Chemistry, 2009) Temiz, Mefhar; Karahan, Ender; Koca, Yakup Kenan
    Soil organic matter is a fundamental, but dynamic component of soils that influences many chemical, physical and biological properties that regulate soil productivity. An important objective for using humic substances in cotton is to balance vegetative and reproductive growth as well as to improve lint yield and fiber quality. Field study was conducted in a randomized complete block design with 3 replications under irrigated conditions at Diyarbakir in 2004, to determine the effects of different humic acid treatments (seed soaking, foliar spray, seed soaking + foliar spray) on yield and fiber technological properties of cotton. The comparison with the untreated control, application of humic acid significantly affected fiber length, fiber uniformity (variety x treatment interaction) and micronaire (treatment) parameters, whereas there were no significant differences in lint turnout, seed-cotton yield and fiber strength parametres.