The Bioecology and Sustainable Management of Weeds

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Ecology".

Deadline for manuscript submissions: 31 December 2025 | Viewed by 559

Special Issue Editors


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Guest Editor
Weed Research Lab, Nanjing Agricultural University, Nanjing, China
Interests: weed biology and ecology; weed management; biosafety assessment of herbicide-resistant crops

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Guest Editor
Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100094, China
Interests: weed ecology; crop–weed interactions; weed management

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Guest Editor
College of Plant Protection, Hunan Agricultural University, Changsha, China
Interests: herbicide resistance; weed management; herbicide toxicity; weed biology; weed population ecology
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Guest Editor
Department of Pesticide Science, Plant Protection College, Shenyang Agricultural University, Shenyang, China
Interests: crop herbicide injury; weed ecology; herbicide resistance; sustainable weed management

Special Issue Information

Dear Colleagues,

Weeds, as the most important pest of agricultural systems, cause an enormous reduction in crop yield worldwide due to their strong adaptability and aggressive competitiveness in the agricultural environment. The use of herbicides is the most economic and effective weed control practice; however, excessive dependence on chemical herbicides has led to a shift in the occurrence and distribution of weeds and weed community succession, especially in terms of the evolution of herbicide-resistant weeds. Weed management is an emerging challenge, highlighting the urgent need to explore sustainable management strategies. An understanding of the evolution of agricultural weeds and crop–weed interactions will be crucial for improving weed management and crop breeding. Therefore, we need to extensively research the population dynamics, genetic evolution, and resource allocation mechanisms of the weeds in competition with crops. Finally, we must outline a sustainable management framework for precise weed management that integrates ecological and biological control, intelligent identification, and targeted herbicide applications to comprehensively manage weeds. This Special Issue of Plants will highlight the evolutionary dynamics of weeds, their competition and adaptation mechanisms, the interaction mechanisms between weeds and crops, and new efficient and sustainable weed management practices.

Prof. Dr. Xiaoling Song
Dr. Hongjuan Huang
Prof. Dr. Lang Pan
Prof. Dr. Mingshan Ji
Guest Editors

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Keywords

  • weed ecology
  • weed bioecology
  • crop–weed interactions
  • sustainable management
  • genetic evolution
  • herbicide

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Published Papers (1 paper)

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Research

13 pages, 906 KiB  
Article
Baseline Sensitivity of Echinochloa crus-galli (L.) P.Beauv. and Leptochloa chinensis (L.) Nees to Flusulfinam, a New 4-Hydroxyphenylpyruvate Dioxygenase (HPPD)-Inhibiting Herbicide in Rice, in China
by Zihao Li, Xinyu Sun, Shuo Yu, He Sun, Lei Lian, Xuegang Peng, Tao Jin, Weitang Liu and Hengzhi Wang
Plants 2025, 14(10), 1425; https://doi.org/10.3390/plants14101425 - 9 May 2025
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Abstract
Flusulfinam is a 4-hydroxyphenylpyruvate dioxygenase (HPPD)-inhibiting herbicide applied post-emergence (POST) to control Echinochloa crus-galli (L.) P.Beauv., Leptochloa chinensis (L.) Nees, Digitaria sanguinalis (Linn.) Scop. and other annual weeds in directly seeded and transplanted paddy fields in China, registered in September 2024. Notably, compared [...] Read more.
Flusulfinam is a 4-hydroxyphenylpyruvate dioxygenase (HPPD)-inhibiting herbicide applied post-emergence (POST) to control Echinochloa crus-galli (L.) P.Beauv., Leptochloa chinensis (L.) Nees, Digitaria sanguinalis (Linn.) Scop. and other annual weeds in directly seeded and transplanted paddy fields in China, registered in September 2024. Notably, compared with other HPPD inhibitors in rice, flusulfinam exhibits consistently high safety in both japonica and indica rice varieties. Meanwhile, flusulfinam has no target-site cross-resistance with traditional acetolactate synthase (ALS)-inhibiting, acetyl-CoA carboxylase (ACCase)-inhibiting, and auxin herbicides. Moreover, as the only heterocyclic-amide-structured herbicide in the HPPD inhibitors, it poses a low risk of metabolic cross-resistance with the other HPPD inhibitors, making it a promising candidate for managing herbicide-resistant weeds in rice fields. In this study, the baseline sensitivity to flusulfinam of E. crus-galli and L. chinensis in paddy fields in China was established using dose–response assays between June and October 2023. Thirty-nine populations of E. crus-galli and forty-three populations of L. chinensis, collected from rice fields across various major rice-producing regions in China, exhibited susceptibility to flusulfinam. The GR50 values ranged from 0.15 to 19.39 g active ingredient (a.i.) ha−1 for E. crus-galli and from 7.82 to 49.92 g a.i. ha−1 for L. chinensis, respectively, far below the field recommended rate of flusulfinam. Meanwhile, the GR50 values of E. crus-galli and L. chinensis to flusulfinam were both distributed as a unimodal curve, with baseline sensitivity (GR50b) of 6.48 g a.i. ha−1 and 22.38 g a.i. ha−1, respectively. The SI50 value showed 129.27-fold and 6.38-fold variability in flusulfinam sensitivity among the 39 E. crus-galli field populations and 43 L. chinensis filed populations, while the variability declined to 2.99-fold and 2.23-fold when the SI50b value was used. This study substantiated the efficacy of flusulfinam against E. crus-galli and L. chinensis in Chinese paddy fields and furnished a benchmark for monitoring temporal variations in the susceptibility of field populations of E. crus-galli and L. chinensis to flusulfinam. Full article
(This article belongs to the Special Issue The Bioecology and Sustainable Management of Weeds)
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