herbicide use Articles

  • Analysis of the Herbicide Triazines Using Ascentis™ C18

    This application demonstrates the suitability of the Ascentis C18 for the analysis of the herbicide triazines simazine, cyanazine, and atrazine.  An Ascentis C18, 15 cm x 4.6 mm I.D., 5 μm particles was used under isocratic mobile phase conditoins (70:30 water:acetonitrile) for the separation.  All samples where diluted to 50 μg/mL, in 70:30 water:acetonitrile mobile phase, and 10 ...


    By MilliporeSigma

  • Why are certain herbicides banned?

    Herbicides, also known as weedkillers, are chemical substances used to control and kill unwanted plants (weeds), leaving the desired plants unharmed. While these products are very useful for farmers, they are not always safe. In fact, many herbicides that were in common use around the world a few years ago are slowly being banned. In this blog post, we will look at a few herbicides that are used ...


    By NW Solutions

  • Maximising herbicide efficiency - Case Study

    The most important component in achieving an effective and efficient spray solution will always be the water source, so in hard water areas, using a good quality water conditioner is essential to prevent chemical breakdown and maximise herbicide performance. Around the country water can range from soft to hard and its pH can also vary depending on location. From Yorkshire down ...


    By Ilex EnviroSciences Limited

  • Ninth Circuit Denies Requests to Stay Use of Enlist Duo Herbicide During Judicial Review

    On August 11, 2015, the U.S. Court of Appeals for the Ninth Circuit denied a motion for a stay pending review filed on December 18, 2014, by the Natural Resources Defense Council (NRDC), as well as a subsequent stay motion filed on February 6, 2015, by the Center for Food Safety and other petitioners (Case Nos. 14-73353 and 14-73359, consolidated).  Both motions requested that the court stay ...


    By Bergeson & Campbell, P.C.

  • The relative sensitivity of macrophyte and algal species to herbicides and fungicides: An analysis using species sensitivity distributions

    Lemna spp. are the standard test species representing aquatic macrophytes in the current risk assessment schemes for herbicides and plant growth regulators in the European Union and North America. At a Society of Environmental Toxicology and Chemistry (SETAC) workshop on Aquatic Macrophyte Risk Assessment for Pesticides (AMRAP), a Species Sensitivity Distribution (SSD) working group was formed ...


    By John Wiley & Sons, Ltd.

  • Why consider pre-emergent herbicide?

    Resistant weeds, dicamba training, new EPA rules and regulations, and ag companies being bought or merging together have been a few of the topics found in many ag media and publications this winter. In summary, things are continually changing in agriculture and will continue to change. One of those changes that many, if not all growers, have experienced is how to deal with weed resistance. ...


    By Ag Leader Technology

  • Evaluation of the management practice for controlling herbicide runoff from paddy fields using intermittent and spillover-irrigation schemes

    Two water management practices, an intermittent  irrigation scheme using automatic irrigation system(AI) and a spillover-irrigation scheme (SI), were compared for the fate and transport of commonly used herbicides, mefenacet (MF) and bensulfuron-methyl (BSM) in experimental paddy plots. Maximum mefenacet concentrations in paddy water were 660 and 540 µgL−1 for AI and SI plot, respectively. ...


    By Springer

  • Estimation of herbicide species sensitivity distribution using single‐species algal toxicity data and information on the mode of action

    Although species sensitivity distribution (SSD) is a key concept for quantitative ecological risk assessment, its application is limited owing to a lack of sufficient data for the analysis, especially on the toxicity of herbicides for primary producers. The authors developed a method of herbicide SSD estimation using single‐species toxicity data and information on the herbicide mode of action ...


    By John Wiley & Sons, Ltd.

  • Photo-assisted electrochemical degradation of the commercial herbicide atrazine

    This paper presents a degradation study of the pesticide atrazine using photo-assisted electrochemical methods at a dimensionally stable anode (DSA®) of nominal composition Ti/Ru0.3Ti0.7O2 in a prototype reactor. The effects of current density, electrolyte flow-rate, as well as the use of different atrazine concentrations are reported. The results indicate that the energy consumption is ...


    By IWA Publishing

  • Trend of herbicide loads in the river Rhine and its tributaries

    Many policies have been established and actions have been taken to reduce pesticide pollution of surface waters. However, the effectiveness of these initiatives was rarely tested on an empirical basis. This study suggests that evidence on the policy effects can be evaluated by analyzing the temporal changes in the loads rather than the concentrations of active ingredients in rivers. It is shown ...


    By John Wiley & Sons, Ltd.

  • Quantifying vapor drift of dicamba herbicides applied to soybean

    Recent advances in biotechnology have produced cultivars of corn, soybean, and cotton resistant to the synthetic‐auxin herbicide dicamba. This technology will allow dicamba herbicides to be applied in new crops, at new periods in the growing season, and over greatly expanded areas, including postemergence applications in soybean. From past and current use in corn and small grains, dicamba vapor ...


    By John Wiley & Sons, Ltd.

  • Effects of the herbicide imazapyr on juvenile Oregon spotted frogs

    Conflict between native amphibians and aquatic weed management in the Pacific Northwest is rarely recognized because most native stillwater‐breeding amphibian species move upland during summer, when herbicide application to control weeds in aquatic habitats typically occurs. However, aquatic weed management may pose a risk for aquatic species present in wetlands through the summer, such as the ...


    By John Wiley & Sons, Ltd.

  • Leaching of three sulfonylurea herbicides during sprinkler irrigation

    Sulfonylurea herbicides are widely applied on the Canadian prairies to control weeds in a variety of crops. Several sulfonylurea herbicides are mobile in soil, and there is concern about their possible movement to ground water. This study was performed to assess the susceptibility of three sulfonylurea herbicides commonly used in prairie crop production to leach under a worst-case scenario. ...

  • A comparison of the herbicide tolerances of rare and common plants in an agricultural landscape

    Declining plant biodiversity in agroecosystems has often been attributed to escalating use of chemical herbicides, but other changes in farming systems, including the clearing of seminatural habitat fragments, confound the influence of herbicides. The present study introduces a new approach to evaluate the impacts of herbicide pollution on plant communities at landscape or regional scales. If ...


    By John Wiley & Sons, Ltd.

  • Effects of the herbicide dicamba on non‐target plants and pollinator visitation

    Nearly 80% of all pesticides applied to row crops are herbicides, and these applications pose potentially significant ecotoxicological risks to non‐target plants and associated pollinators. In response to the widespread occurrence of weed species resistant to glyphosate, biotechnology companies have developed crops resistant to the synthetic‐auxin herbicides dicamba or 2,4‐D, and once ...


    By John Wiley & Sons, Ltd.

  • The essential oils in agriculture as an alternative strategy to herbicides: a case study

    In this study we investigated the allelopathic effect of some essential oils extracted from aromatic plants to inhibit weed seed germination. The study was performed to evaluate the potential genotoxic effect of lavender on Vicia faba root meristems by genotoxicity tests (comet assay and micronuclei test) and to evaluate microbial diversity fluctuation by Restriction Fragment Length Polymorphism ...


    By Inderscience Publishers

  • Effects of repeated pulsed herbicide exposures on the growth of aquatic macrophytes

    Many contaminants are released into aquatic systems intermittently in a series of pulses. Pulse timing and magnitude can vary according to usage, compound‐specific physicochemical properties, and use area characteristics. Standard laboratory ecotoxicity tests typically employ continuous exposure concentrations over defined durations and thus may not accurately and realistically reflect the ...


    By John Wiley & Sons, Ltd.

  • Questions concerning the potential impact of glyphosate‐based herbicides on amphibians

    Use of glyphosate‐based herbicides is increasing worldwide. Here we review the available data related to potential impacts of these herbicides on amphibians and conduct a quantitative meta‐analysis. Because only a little is known about environmental concentrations of glyphosate in amphibian habitats, and virtually nothing about environmental concentrations of the substances added to the ...


    By John Wiley & Sons, Ltd.

  • Persistence and management of dinitroaniline herbicides residues in sandy loam soil

    The addition of organic manure affects the biological, chemical and physical properties of soil that control the fate of herbicides. Three dinitroaniline herbicides were studied to asses their persistence, dissipation and residue management in sandy loam soil with and without addition of farmyard manure (FYM) under middle western Indian agro-climatic conditions. The herbicides, pendimethalin ...


    By Inderscience Publishers

  • Tissue-specific expression of rice CYP72A21 induced by auxins and herbicides

    Cytochrome monooxygenase P450s (CYPs) comprise one of the largest enzyme families in plants. Some P450s are involved in xenobiotic metabolism: they confer herbicide tolerance and are induced by chemical treatments. We isolated a novel P450 cDNA, CYP72A21 (accession number, AB237166), from rice (Oryza sativa L. cv. Nipponbare) seedlings treated with a mixture of 2,4-dichlorophenoxyacetic acid ...


    By Springer

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