Cotton Science

Effects of the spraying time of defoliation and ripening agent on cotton boll development and fiber quality at different fruiting branches

Zhu Jijie, Zhao Hongxia, Wang Shijie, Jia Xiaoyun, Li Miao, Wang Guoyin

Cotton Science, 2023, 35(2): 117-127. DOI: 10.11963/cs20230001

年份 Year	处理 Treatment	喷施当天吐絮率 Boll opening rate on the day of spraying/%	喷施后20 d吐絮率 Boll opening rate at 20 days after spraying/%	喷施后20 d脱叶率 Defoliation rate at 20 days after spraying/%
2020	T1	40.0±1.3 c	93.2±3.5 b	94.9±3.2 a
	T2	45.3±2.0 b	96.0±4.1 a	94.5±4.0 a
	T3	55.7±2.5 ab	95.8±3.2 a	96.0±4.5 a
	T4	58.1±1.9 a	97.2±3.5 a	95.7±3.1 a
	CK	39.7±1.1 c	63.9±3.7 c	56.8±2.4 b
2021	T1	40.7±1.5 c	91.4±2.9 b	95.4±4.2 a
	T2	53.6±2.2 b	94.3±2.5 a	92.1±4.5 b
	T3	56.9±3.0 b	95.9±3.4 a	95.0±3.8 a
	T4	65.0±2.9 a	96.1±4.1 a	96.5±3.2 a
	CK	41.0±2.1 c	71.6±3.1 c	66.0±3.4 c

Table 3 Effects of spraying defoliation and ripening agent on boll-opening rate and defoliation rate

Other figure/table from this article

Table 1 The time of spraying defoliation and ripening agent for each treatment
Table 2 Temperature before and after spraying defoliation and ripening agent
Table 4 Effect of spraying defoliation and ripening agent on dry matter mass of cotton bolls at different fruiting branches
Table 5 Percentage of dry matter mass of cotton bolls at different plant parts to total dry matter mass per plant
Table 6 Effects of spraying time of defoliation and ripening agent on boll weight, seed index and lint percentage
Table 7 Effect of spraying defoliation and ripening agent time on seed cotton and lint yield
Table 8 Effects of spraying time of defoliation and ripening agent on fiber quality of cotton bolls at different fruiting branches