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	单株棉铃干物质质量 Dry matter mass of cotton bolls per plant/g
年份 Year	处理 Treatment	上部 Upper part	中部 Middle part	下部 Lower part	总计 Total
2020	T1	59.2±3.3 d	62.2±2.9 bc	62.8±5.2 b	184.2±10.1 c
	T2	63.3±2.6 c	60.8±3.8 c	66.9±4.3 b	191.0±12.2 b
	T3	72.8±3.4 b	64.0±2.6 b	73.7±4.1 a	210.5±8.9 a
	T4	76.7±2.8 ab	66.9±3.1 a	65.6±5.4 b	209.2±12.1 a
	CK	80.9±2.0 a	65.6±3.5 a	64.2±3.8 b	210.7±12.5 a
2021	T1	55.9±3.1 c	61.3±3.5 b	56.4±4.6 b	173.6±15.6 c
	T2	59.0±3.2 c	62.9±3.4 b	64.4±3.5 a	186.3±14.8 b
	T3	64.0±4.1 b	65.5±3.7 a	69.7±3.3 a	199.2±15.1 a
	T4	71.5±3.5 a	64.1±3.6 ab	62.4±4.2 a	198.0±13.9 a
	CK	72.4±3.7 a	64.9±2.1 a	63.0±3.9 a	200.3±14.2 a

Table 4 Effect of spraying defoliation and ripening agent on dry matter mass of cotton bolls at different fruiting branches

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