Managing herbicide resistance in Southern Great Plains cropping systems

IF 6.1 1区农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY

Agricultural Systems Pub Date : 2025-04-08 DOI:10.1016/j.agsy.2025.104336

Chellie H. Maples , Dayton M. Lambert , Misha R. Manuchehri

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引用次数: 0

Abstract

Context

Herbicide-resistant weeds are a growing problem, reducing crop yield and profitability for wheat, sorghum, and soybean producers in the Southern Great Plains. Herbicide-resistant weed pressure is particularly challenging for rainfed, no-till winter wheat systems, which are common in this region.

Objective

The objective of this study is to determine the economic effectiveness of various herbicide resistance management strategies within rainfed winter wheat cropping systems in the Southern Great Plains. The study investigates how these strategies can limit the spread of herbicide-resistant weeds and support profitable crop production.

Methods

Three cropping systems were evaluated: continuous wheat-soybean-fallow, wheat-sorghum-fallow, and wheat-fallow rotations. Herbicide management strategies analyzed include combinations of pre-emergent, post-emergent, and glyphosate burndown applications, as well as variations in application frequency. A dynamic, bioeconomic weed population model was employed to evaluate the economic implications of proactive weed management strategies for each cropping system. Additionally, yield loss due to weed pressure was estimated through a crop growth simulation model linked to a weed competition model.

Results and conclusions

Results indicated optimal herbicide management strategies delayed the spread of herbicide-resistant genes in weed populations. The proliferation of herbicide-resistant genes took longer in wheat-double crop systems than in a wheat-fallow system. Moreover, the inclusion of summer crops increased revenue through additional crop revenue.

Significance

The findings indicate that adopting wheat-double crop rotations with targeted herbicide strategies can slow the development of herbicide resistance in the Southern Great Plains. This research highlights the importance of diversified crop rotations and careful herbicide management for sustainable and effective long-term weed control.

Abstract Image

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管理大平原南部种植系统的除草剂抗性

抗除草剂杂草是一个日益严重的问题，它降低了南部大平原小麦、高粱和大豆生产商的作物产量和利润。抗除草剂杂草压力对旱作免耕冬小麦系统尤其具有挑战性，这在该地区很常见。目的研究南方大平原旱作冬小麦种植系统中各种抗除草剂管理策略的经济效益。该研究调查了这些策略如何限制抗除草剂杂草的传播，并支持有利可图的作物生产。方法对小麦-大豆-休耕、小麦-高粱-休耕和小麦-休耕轮作三种种植制度进行评价。所分析的除草剂管理策略包括出现前、出现后和草甘膦烧毁应用的组合，以及使用频率的变化。采用动态、生物经济的杂草种群模型，对不同种植制度下主动杂草管理策略的经济影响进行了评价。此外，通过与杂草竞争模型相关联的作物生长模拟模型来估计杂草压力造成的产量损失。结果与结论最佳除草剂管理策略延缓了抗除草剂基因在杂草群体中的传播。抗除草剂基因的增殖在小麦-双季制中比在小麦-休耕制中需要更长的时间。此外，夏季作物的纳入通过额外的作物收入增加了收入。结果表明，在南方大平原地区，采用小麦双季轮作和定向除草剂策略可以减缓除草剂抗性的发展。该研究强调了多样化的作物轮作和谨慎的除草剂管理对持续有效的长期杂草控制的重要性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Agricultural Systems 农林科学-农业综合

CiteScore

13.30

自引率

7.60%

发文量

174

审稿时长

30 days

期刊介绍： Agricultural Systems is an international journal that deals with interactions - among the components of agricultural systems, among hierarchical levels of agricultural systems, between agricultural and other land use systems, and between agricultural systems and their natural, social and economic environments. The scope includes the development and application of systems analysis methodologies in the following areas: Systems approaches in the sustainable intensification of agriculture; pathways for sustainable intensification; crop-livestock integration; farm-level resource allocation; quantification of benefits and trade-offs at farm to landscape levels; integrative, participatory and dynamic modelling approaches for qualitative and quantitative assessments of agricultural systems and decision making; The interactions between agricultural and non-agricultural landscapes; the multiple services of agricultural systems; food security and the environment; Global change and adaptation science; transformational adaptations as driven by changes in climate, policy, values and attitudes influencing the design of farming systems; Development and application of farming systems design tools and methods for impact, scenario and case study analysis; managing the complexities of dynamic agricultural systems; innovation systems and multi stakeholder arrangements that support or promote change and (or) inform policy decisions.