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Open research questions in Weed Control and Herbicide Applications

109 gap statements mined from Weed Control and Herbicide Applications papers in our 4.5M-paper local library, which holds 681 papers on the topic — drawn mostly from each paper's own stated research gap, future-work, challenge and limitation notes, and its abstract. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one.

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What the literature leaves open

  • Climate change is increasing the need for diverse weed management strategies. Current management practices, including herbicide application, are being compromised by climate change. There is a need for a comprehensive understanding of the impact of climate change on weed biology and management.

    Weed Biology and Management under a Changing Climate: An Integrative Review · 2026 · DOI

  • There is a need for a comprehensive understanding of the impact of climate change on weed biology and management. The potential of smart agriculture and artificial intelligence-based technologies for optimizing weed management strategies is not fully explored.

    Weed Biology and Management under a Changing Climate: An Integrative Review · 2026 · DOI

  • The lack of effective weed management strategies for fodder maize production. The need for safe and efficient herbicidal interventions for fodder maize production.

    Impact of sowing techniques and herbicidal interventions on weed management and residue dynamics in fodder maize · 2026 · DOI

  • The lack of effective integrated weed management strategies for wheat cultivation. The need to identify practical alternatives to labor-intensive weed-free conditions.

    Effect of integrated weed management on growth and yield of Wheat (Triticum aestivum L.) · 2026 · DOI

  • There is a need to evaluate the efficacy of different weed management practices for managing weeds and enhancing crop performance in maize. There is a lack of information on the mode of action of metolachlor and its soil behavior.

    Different weed management practices influence weed dynamics and productivity of maize (Zea mays L.) · 2026 · DOI

  • The lack of understanding of the effects of season-long fall panicum interference on rough rice yield on organic soils. The need for quantitative information on the relationship between fall panicum density and percent rough rice yield loss.

    Effects of Fall Panicum ( Panicum dichotomiflorum ) Interference on Rough Rice Yield · 2026 · DOI

  • Weed management is challenging in organic farming due to the lack of chemical herbicides. Excessive weeds can compete with crops for resources, limiting crop productivity. Consistent and effective weed suppression is difficult to achieve in organic systems.

    Competitive Ability of Three-Crop Mixtures and Pure Stands of Pea, Oats, and Camelina on Weed Diversity in Organic Farming · 2026 · DOI

  • Diflufenican is a selective phenyl ether herbicide belonging to WSSA Group 12 Limited information is available regarding its efficacy, crop safety, and interaction with metribuzin when applied preemergence (PRE) in soybean under Ontario growing conditions.

    Efficacy of Diflufenican Plus Metribuzin Applied Preemergence in Soybean · 2026 · DOI

  • There is a lack of awareness of D. stramonium among farmers, regulatory bodies, and food and feed producers. The study addresses the gap by analyzing the spatiotemporal spread patterns of D. stramonium in Austria and its significance for soybean cultivation.

    Datura stramonium L. in soybean in Austria: risk areas, extent of late-season infestation, and management implications · 2026 · DOI

  • There is a need to understand the influence of flooding patterns on weed species diversity and maize yield in flood recession farming. Prior studies have not examined the effects of flooding patterns on weed biomass and maize yield in the Okavango Delta.

    Influence of Flooding Pattern on Weed Species Diversity and Maize Yield in Flood Recession Farming in the Okavango Delta, Northern Botswana. · 2026 · DOI

  • The need to balance the rate of metamitron used with the need to effectively control Palmer amaranth. The potential for Palmer amaranth to develop resistance to metamitron.

    Optimization of Metamitron Rate Applied PRE in Sugar Beet for Management of Palmer amaranth ( Amaranthus palmeri S. Watson) · 2026 · DOI

  • The lack of information on the optimal rate of metamitron for controlling Palmer amaranth. The need to reduce the rate of metamitron used while still effectively controlling Palmer amaranth. The potential benefit of adding ethofumesate as a tank-mix partner to reduce the rate of metamitron needed.

    Optimization of Metamitron Rate Applied PRE in Sugar Beet for Management of Palmer amaranth ( Amaranthus palmeri S. Watson) · 2026 · DOI

  • There is a need to examine the effect of weed control strategies on the growth performance of groundnut varieties in the Nigerian Savanna. Limited information is available on the growth characteristics of groundnut varieties under different weed control strategies.

    EFFECT OF WEED CONTROL STRATEGIES ON THE GROWTH PERFORMANCE OF GROUNDNUT (Arachis hypogaea L.) VARIETIES IN THE NIGERIAN SAVANNA · 2026 · DOI

  • The study addresses the gap in knowledge on the effects of crop establishment and weed management on weed suppression and productivity of Basmati rice. The study fills the gap in understanding the viability, sustainability, and profitability of different crop establishment and weed management strategies for Basmati rice cultivation.

    Effect of crop establishment and weed management on weed suppression and productivity of Basmati rice · 2026 · DOI

  • There is a lack of information on the types of weeds and their dominance in the gandaria planting area. There is a need to develop strategies for controlling weeds in the gandaria planting area.

    KOMPOSISI GULMA PADA AREAL PERTANAMAN GANDARIA (Bouea macrophylla) DI NEGERI HATIVE BESAR KECAMATAN TELUK AMBON · 2026 · DOI

  • The study faced challenges in evaluating the number of herbicide applications and mechanical weeding passes due to limited implementation. The study faced challenges in accounting for the variability in soil typology and crop yield potential.

    Wheat yield is resilient to weed pressure under preventive and herbicide-free integrated weed management · 2026 · DOI

  • Weed infestation is a major constraint to maize productivity. The study highlights the need for effective weed control strategies. The experiment was conducted only during the 2023 and 2024 seasons.

    Weed control and yield optimization in maize (Zea mays L.) using new-generation herbicide combinations · 2026 · DOI

  • Future research should evaluate the efficacy of other herbicide combinations. Future research should investigate the long-term effects of herbicide applications.

    Weed control and yield optimization in maize (Zea mays L.) using new-generation herbicide combinations · 2026 · DOI

  • There is a lack of knowledge about the interactions of iptriazopyrid with other herbicides. The paper aims to address this gap by evaluating the interactions of iptriazopyrid with synthetic auxin and residual herbicides.

    Interactions of Iptriazopyrid with Synthetic Auxin and Residual Herbicides in Rice · 2026 · DOI

  • The presence of additional ALS mutations and limited evidence of metabolic involvement suggest that resistance mechanisms may be complex and variable among populations, reducing the predictability of control with chemical options alone.

    Characterization of ALS Inhibitor Resistance in Alopecurus myosuroides : Primary Role of Trp574Leu and Secondary Contributions of Additional Mutations and Metabolism · 2026 · DOI

  • Limited land availability and low nutritive value of crop residues.

    Impact of sowing techniques and herbicidal interventions on weed management and residue dynamics in fodder maize · 2026 · DOI

  • The study is based on four years of on-farm data, which limits the analysis. The study did not evaluate the number of herbicide applications, mechanical weeding passes, and glyphosate due to limited implementation. The study excluded fertiliser input variables and association of varieties due to their limited relevance to weed management.

    Wheat yield is resilient to weed pressure under preventive and herbicide-free integrated weed management · 2026 · DOI

  • Equipment cost limited the number of replicates that could be monitored, - Only three replicates were monitored, - The study was conducted at a single location, - The study only examined the effects of cereal rye on soil temperature, moisture…

    Unpacking the Regulation of Soil Temperature, Soil Moisture, and Macronutrients by Cereal Rye Biomass Gradients: Influence on Weed Emergence · 2026 · DOI

  • Investigating the effects of cereal rye on other soil properties, - Examining the impact of cereal rye on different types of weeds, - Studying the effects of cereal rye on soil health over multiple growing…

    Unpacking the Regulation of Soil Temperature, Soil Moisture, and Macronutrients by Cereal Rye Biomass Gradients: Influence on Weed Emergence · 2026 · DOI

  • The study was conducted in a greenhouse, - The experiment was limited to two crop species and four weed species, - The study did not investigate the long-term effects of mineral nitrogen on crop-weed…

    Weed–Crop Competition: Which plants benefit more from mineral nitrogen? · 2026 · DOI

Most-cited papers in Weed Control and Herbicide Applications

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Open questions raised by papers listed on this page include: (1) There is a need for a comprehensive understanding of the impact of climate change on weed biology and management (“Weed Biology and Management under a Changing Climate: An Integrative Review”, 2026); (2) The lack of effective weed management strategies for fodder maize production (“Impact of sowing techniques and herbicidal interventions on weed management and…”, 2026); (3) The lack of effective integrated weed management strategies for wheat cultivation (“Effect of integrated weed management on growth and yield of Wheat (Triticum…”, 2026); (4) There is a need to evaluate the efficacy of different weed management practices for managing weeds and enhancing crop performance in maize (“Different weed management practices influence weed dynamics and productivity of…”, 2026); (5) The lack of understanding of the effects of season-long fall panicum interference on rough rice yield on organic soils (“Effects of Fall Panicum ( Panicum dichotomiflorum ) Interference on Rough Rice…”, 2026). 109 gap statements have been mined from Weed Control and Herbicide Applications papers in our 4.5M-paper local library, which holds 681 papers on the topic; the gaps come from whichever of those papers state one. They are mostly the research gaps the authors state and the papers' abstracts, plus future-work, limitations and challenges passages. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one, so you can read the original claim in context.

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