Effect of Follar Application Dates With Ethephon on Fiber Characterizes and Seeds Quality for Tow Cotton Varieties

Abstract

A field experiment was carried out at field experiment, College ofAgriculture university of Baghdad, Abu-Graib, during season 2008 to stud the effectof four foliar application dates Viz .(1- Non foliar 2- at flowering buds format ion 3-at flowering stage 4- at boll formation ) and two varieties of cotton Ashour andLashata on lint traits and qualitative characters for seeds cotton . the results showedthat the foliar application dates, varieties and interaction between them havesignificant effect on , lint and seeds traits. plant fibers foliar applied with growthregulator at flowering stage were distinguished by their length, strength ,and fineness,the varieties of Lashata produced long, strong ,and more rough fibers as comparedwith Ashour, The plant seeds where the treatment of foliar was applied at floweringstage and at boll formation give higher oil and protein percentage rates of 25.23% and21.06 % respectively, variety of Lashata give higher oil and protein percentage ratesof 24.12% and 20.60% respectively . The saturated fatty acids combination wasdecreased with foliar application at flowering stage offsets increase in un saturatedfatty acids combination . Lashata was decrease in saturated fatty acids combinationaccompanied with increase in unsaturated fatty acids combination, the foliar appliedat flowering buds formation with variety of Lashata led to decrease in saturated fattyacids combination accompanied with increase in un saturated fatty acids combination.