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Effect octanoate, methyl Caprylate and 6-BA on cotton to the top

Cotton is the largest of China's agricultural crops, cultivation of cotton known to the world in the intensive, fine pruning is an important technology intensive content. Among the many techniques of cultivation, cotton cotton topping help reduce the consumption of nutrients, so that more nutrients transported to the fruiting branches, increased boll weight, reduce bud abscission and ineffective, increasing pre-boll rate, reduce boll rot, promote early, cotton is an important agronomic management measures yield an increase. Agricultural production in general, topping artificial methods, but for large-scale production of cotton, artificial topping labor intensive, taking the chemical to the top can save time, save labor expenses, improve labor efficiency, good economic and good market prospects. Cotton growth and development of the whole process are subject to the regulation of plant hormones, hormones on cotton leaf senescence, Leiling development and shedding, ovule and fiber development has an impact. But playing in the cotton top application has not yet been reported, therefore, how the application of plant hormones and chemical agents to regulate the apical dominance of cotton, provide a theoretical basis and technical approach for the whole quality of chemical regulation cultivation is a priority. In this experiment, Anhui cotton 19F1 were used to study the effects of foliar spraying octanoate, methyl caprylate influence and 6-benzyladenine (6-BA) to the top of the cotton. The results showed that: octanoate, methyl caprylate and 6-BA concentrations may be appropriate topping instead of doing a certain extent. All three reagents treatments significantly reduced plant height, high concentration and high concentration of cotton significantly increased the number of fruiting branches. In addition to the three reagents lowest concentrations were significantly increased the total number of peach cotton, higher concentrations increase the number of bolls per plant, boll weight and lint percentage rate, thereby increasing the yield of seed cotton and lint cotton, but V peach former number no effect. The latter three reagent little length and the upper half of uniformity on cotton fibers, but most concentrations increased micronaire, high concentrations decrease the strength and elongation of cotton fiber quality decline.