Cotton is a kind of unlimited growth plant, which is often flourishing. At this time, the timely control of chemical agents can ensure the purpose of early and stable growth and high yield of cotton. It is the core content of cotton management to promote rational control, shape ideal plant type, improve the ventilation and light environment of field population, and promote the rapid transport of nutrients to reproductive organs such as boll. The purpose of high yield can be achieved by controlling THE whole cotton growth PERIOD, building the high yield frame and increasing the boll setting rate.

Jin Tiao(15%Prohexadione calcium)Foliar treatment can effectively control the growth of plants, regulate the transformation of vegetative growth to reproductive growth, improve the fruit setting rate of plants, so as to achieve the effect of improving the yield and quality. In addition. Prohexadione calcium can regulate plant metabolism and improve crop stress resistance

The cotton chemical control and yield increase program has been applied by the company for many years. In order to further optimize the formula and demonstrate the field application, the crop technology Department of Zhengshi Chemical carried out the cotton chemical control and yield increase demonstration experiment in the cotton field of 148 Regiment Cotton in Shihezi City, Xinjiang Province, the main cotton producing area, from May to July 2022.

Photo 1 The experiment demonstrates the growth of the demonstration field bud stage

Photo 2 The yield of the experimental demonstration field was measured

Photo 3 Cotton flocculation effect

Jin Tiao(15%Prohexadione calcium) Demonstration experiment on chemical control and yield increase of the scheme on cotton

Test time and place: From May to July 2022, 148 Regiment in Shihezi City, Xinjiang Province

Varieties: New Luzao No.84 Cotton

Test Product: Jin Tiao(15%Prohexadione calcium)

Test Method: The spraying treatment was carried out at the bud stage, the first flowering stage, before and after the topping. 10 cotton plants were randomly marked at each sample point of each treatment, and 3 sample points were set, a total of 30 cotton plants were measured at the fixed point. The plant height, bud number and cotton peach number after the scheme were measured at different stages, and the differences were analyzed.

Test Result: The cotton treated with Zhengshi scheme could make the cotton with early buds, multiple buds, large buds and strong buds, and the number of buds per plant increased by 3.77 compared with the control at the bud stage. It promoted nutrient transformation, accelerated cotton bud flowering and boll setting, early flowering, early boll setting, and increased the first flowering stage by 0.9 bolls compared with the control cotton with single plant diameter greater than 1cm. Compared with the control, the number of cotton peach per plant increased by 0.4. After topping, the plant shape was compact, the proportion of three peaches was appropriate, the number of cotton peaches increased by 1.44 compared with the control, and the number of empty fruit branches decreased by 1.17 compared with the control. Continuous use of four times, can increase the yield, yield per mu increase rate of 12.7%.

Sheet 1 Comparison of bud number, cotton peach number and yield in chemical control scheme

Photo 4 Use effect in bud period

Photo 5 Use effect in beginning of flowering

Photo 6 Use effect before topping

Photo 7 Use effect after topping

Photo 8 Test demonstration field measured yield per 667m2

The cotton chemical control and yield increase plan needs to pay attention to the period and dosage of treatment, and the time of treatment should be timely to avoid premature or too late. The dosage should be strictly in accordance with the recommended dosage to avoid adverse effects such as phytotoxicity. At the same time, it should be combined with water and fertilizer. It should be used three days before water intake or between water intake. Different soil types and different water and fertilizer plots should be used rationally according to the actual situation, and Mepiquat chloride should be used appropriately according to the growth of cotton. The combination of chemical control and increase production with water and fertilizer, together with excellent field management techniques, can achieve higher yield and better quality.