Interference and critical periods for mixed natural weed control in direct-seeded cotton in the lower Yangtze River Valley
Knowledge of the critical periods of crop–weed competition is crucial for designing weed management strategies in cropping systems. In the Lower Yangtze Valley, China, field experiments were conducted in 2011 and 2012 to study the effect of interference from mixed natural weed populations on cotton...
Saved in:
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Cambridge University Press
2025-01-01
|
| Series: | Weed Technology |
| Subjects: | |
| Online Access: | https://www.cambridge.org/core/product/identifier/S0890037X25000090/type/journal_article |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849245895482146816 |
|---|---|
| author | Shuying Li Jiabao Zhu Yan Ma Daoqing Xu Min Chen Xiaoling Liu Wei Wang Huachun Kan Shufeng Zheng Chao Chen |
| author_facet | Shuying Li Jiabao Zhu Yan Ma Daoqing Xu Min Chen Xiaoling Liu Wei Wang Huachun Kan Shufeng Zheng Chao Chen |
| author_sort | Shuying Li |
| collection | DOAJ |
| description | Knowledge of the critical periods of crop–weed competition is crucial for designing weed management strategies in cropping systems. In the Lower Yangtze Valley, China, field experiments were conducted in 2011 and 2012 to study the effect of interference from mixed natural weed populations on cotton growth and yield and to determine the critical period for weed control (CPWC) in direct-seeded cotton. Two treatments were applied: allowing weeds to infest the crop or keeping plots weed-free for increasing periods (0, 1, 2, 4, 6, 8, 10, 12, 14, and 20 wk) after crop emergence. The results show that mixed natural weed infestations led to 35- to 55-cm shorter cotton plants with stem diameters 10 to 13 mm smaller throughout the season, fitting well with modified Gompertz and logistic models, respectively. Season-long competition with weeds reduced the number of fruit branches per plant by 65% to 82%, decreasing boll number per plant by 86% to 96% and single boll weight by approximately 24%. Weed-free seed cotton yields ranged from 2,900 to 3,130 kg ha−1, while yield loss increased with the duration of weed infestation, reaching up to 83% to 96% compared with permanent weed-free plots. Modified Gompertz and logistic models were used to analyze the impact of increasing weed control duration and weed interference on relative seed cotton yield (percentage of season-long weed-free cotton), respectively. Based on a 5% yield loss threshold, the CPWC was found to be from 145 to 994 growing degree days (GDD), corresponding to 14 to 85 d after emergence (DAE). These findings emphasize the importance of implementing effective weed control measures from 14 to 85 DAE in the Lower Yangtze Valley to prevent crop losses exceeding a 5% yield loss threshold. |
| format | Article |
| id | doaj-art-e35e20eb89ed4418a8802dc2ccadf916 |
| institution | Kabale University |
| issn | 0890-037X 1550-2740 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Cambridge University Press |
| record_format | Article |
| series | Weed Technology |
| spelling | doaj-art-e35e20eb89ed4418a8802dc2ccadf9162025-08-20T03:58:40ZengCambridge University PressWeed Technology0890-037X1550-27402025-01-013910.1017/wet.2025.9Interference and critical periods for mixed natural weed control in direct-seeded cotton in the lower Yangtze River ValleyShuying Li0https://orcid.org/0009-0000-3015-7306Jiabao Zhu1Yan Ma2Daoqing Xu3Min Chen4Xiaoling Liu5Wei Wang6Huachun Kan7Shufeng Zheng8Chao Chen9Associate Researcher, Cotton Research Institute, Anhui Academy of Agricultural Science, Hefei, Anhui, ChinaResearcher, Cotton Research Institute, Anhui Academy of Agricultural Science, Hefei, Anhui, ChinaResearcher, Cotton Research Institute, China Academy of Agricultural Science, Anyang, Henan, ChinaResearcher, Cotton Research Institute, Anhui Academy of Agricultural Science, Hefei, Anhui, ChinaAssistant Researcher, Cotton Research Institute, Anhui Academy of Agricultural Science, Hefei, Anhui, ChinaAssociate Researcher, Cotton Research Institute, Anhui Academy of Agricultural Science, Hefei, Anhui, ChinaAssociate Researcher, Cotton Research Institute, Anhui Academy of Agricultural Science, Hefei, Anhui, ChinaAssociate Researcher, Cotton Research Institute, Anhui Academy of Agricultural Science, Hefei, Anhui, ChinaResearcher, Cotton Research Institute, Anhui Academy of Agricultural Science, Hefei, Anhui, ChinaAssistant Researcher, Cotton Research Institute, Anhui Academy of Agricultural Science, Hefei, Anhui, ChinaKnowledge of the critical periods of crop–weed competition is crucial for designing weed management strategies in cropping systems. In the Lower Yangtze Valley, China, field experiments were conducted in 2011 and 2012 to study the effect of interference from mixed natural weed populations on cotton growth and yield and to determine the critical period for weed control (CPWC) in direct-seeded cotton. Two treatments were applied: allowing weeds to infest the crop or keeping plots weed-free for increasing periods (0, 1, 2, 4, 6, 8, 10, 12, 14, and 20 wk) after crop emergence. The results show that mixed natural weed infestations led to 35- to 55-cm shorter cotton plants with stem diameters 10 to 13 mm smaller throughout the season, fitting well with modified Gompertz and logistic models, respectively. Season-long competition with weeds reduced the number of fruit branches per plant by 65% to 82%, decreasing boll number per plant by 86% to 96% and single boll weight by approximately 24%. Weed-free seed cotton yields ranged from 2,900 to 3,130 kg ha−1, while yield loss increased with the duration of weed infestation, reaching up to 83% to 96% compared with permanent weed-free plots. Modified Gompertz and logistic models were used to analyze the impact of increasing weed control duration and weed interference on relative seed cotton yield (percentage of season-long weed-free cotton), respectively. Based on a 5% yield loss threshold, the CPWC was found to be from 145 to 994 growing degree days (GDD), corresponding to 14 to 85 d after emergence (DAE). These findings emphasize the importance of implementing effective weed control measures from 14 to 85 DAE in the Lower Yangtze Valley to prevent crop losses exceeding a 5% yield loss threshold.https://www.cambridge.org/core/product/identifier/S0890037X25000090/type/journal_articleCotton, Gossypium hirsutum LCompetitionseed cotton yield lossweed interferenceyield loss thresholdnaturally occurring weed flora |
| spellingShingle | Shuying Li Jiabao Zhu Yan Ma Daoqing Xu Min Chen Xiaoling Liu Wei Wang Huachun Kan Shufeng Zheng Chao Chen Interference and critical periods for mixed natural weed control in direct-seeded cotton in the lower Yangtze River Valley Weed Technology Cotton, Gossypium hirsutum L Competition seed cotton yield loss weed interference yield loss threshold naturally occurring weed flora |
| title | Interference and critical periods for mixed natural weed control in direct-seeded cotton in the lower Yangtze River Valley |
| title_full | Interference and critical periods for mixed natural weed control in direct-seeded cotton in the lower Yangtze River Valley |
| title_fullStr | Interference and critical periods for mixed natural weed control in direct-seeded cotton in the lower Yangtze River Valley |
| title_full_unstemmed | Interference and critical periods for mixed natural weed control in direct-seeded cotton in the lower Yangtze River Valley |
| title_short | Interference and critical periods for mixed natural weed control in direct-seeded cotton in the lower Yangtze River Valley |
| title_sort | interference and critical periods for mixed natural weed control in direct seeded cotton in the lower yangtze river valley |
| topic | Cotton, Gossypium hirsutum L Competition seed cotton yield loss weed interference yield loss threshold naturally occurring weed flora |
| url | https://www.cambridge.org/core/product/identifier/S0890037X25000090/type/journal_article |
| work_keys_str_mv | AT shuyingli interferenceandcriticalperiodsformixednaturalweedcontrolindirectseededcottonintheloweryangtzerivervalley AT jiabaozhu interferenceandcriticalperiodsformixednaturalweedcontrolindirectseededcottonintheloweryangtzerivervalley AT yanma interferenceandcriticalperiodsformixednaturalweedcontrolindirectseededcottonintheloweryangtzerivervalley AT daoqingxu interferenceandcriticalperiodsformixednaturalweedcontrolindirectseededcottonintheloweryangtzerivervalley AT minchen interferenceandcriticalperiodsformixednaturalweedcontrolindirectseededcottonintheloweryangtzerivervalley AT xiaolingliu interferenceandcriticalperiodsformixednaturalweedcontrolindirectseededcottonintheloweryangtzerivervalley AT weiwang interferenceandcriticalperiodsformixednaturalweedcontrolindirectseededcottonintheloweryangtzerivervalley AT huachunkan interferenceandcriticalperiodsformixednaturalweedcontrolindirectseededcottonintheloweryangtzerivervalley AT shufengzheng interferenceandcriticalperiodsformixednaturalweedcontrolindirectseededcottonintheloweryangtzerivervalley AT chaochen interferenceandcriticalperiodsformixednaturalweedcontrolindirectseededcottonintheloweryangtzerivervalley |