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	时期 Period	最高气温 Maximum temperature/℃	最低气温 Minimum temperature/℃	平均气温 Average temperature/℃
2020	9月下旬 The last ten days of September	24.5	16.8	20.7
	10月上旬 The first ten days of October	22.1	10.6	16.4
	10月中旬 The middle ten days of October	21.2	9.9	15.6
	10月下旬 The last ten days of October	18.8	7.0	12.9
2021	9月下旬 The last ten days of September	24.9	16.8	20.9
	10月上旬 The first ten days of October	18.4	12.1	15.3
	10月中旬 The middle ten days of October	16.8	7.0	11.9
	10月下旬 The last ten days of October	19.1	6.6	12.9

Table 2 Temperature before and after spraying defoliation and ripening agent

Other figure/table from this article

Table 1 The time of spraying defoliation and ripening agent for each treatment
Table 3 Effects of spraying defoliation and ripening agent on boll-opening rate and defoliation rate
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