Diuron is a selective herbicide for broadleaf weeds and some annual grasses. It can cause illness by inhalation, skin absorption andor ingestion. Multivariate analysis reveals significant diuronrelated. Up epa pesticides reregistration eligibility decision. Plants in plants, diuron undergoes demethylation of the nitrogen atom and hydroxylation at position 2 of the benzene ring. Diuron is a member of the class of phenylureas that is urea in which both of the hydrogens attached to one nitrogen are substituted by methyl groups, and one of the hydrogens attached to the other nitrogen is substituted by a 3,4dichlorophenyl group. Diuron 50%sc, 80%wdg, 95%tc, herbicide china pesticides. Composicion componente cas onu einecs contenido %, ww diuron 330541 006015009 2063544 80 inertes 20 3. Responses of chronically contaminated biofilms to short. Any weed e population may contain individuals naturally resistant to. Classification of herbicides according to mechanism of action, chemical family, and herbicide group. Diuron is a broadspectrum residual herbicide that has been registered in.
If using a concentrated laundry detergent use 250g or ml100l water. Results are dependent on amount applied and favorable environmental conditions such as high humidity and temperatures of 70. Immediate steps should be taken to limit its spread to the environment. Pdf effects of the phenylurea herbicide diuron on the physiology. Represents a clear threat to the health of marine and freshwater ecosystems. Is the dominant herbicide entering the great barrier reef. Therefore, the risks from the catfish use have been assessed and are discussed in this document. Diuron 4l is to be mixed with water and applied as a spray for selective control of weeds in certain crops and for nonselective weed control on noncropland areas. It is noncorrosive to equipment, nonflammable and nonvolatile. Diuron 3,1 x 104 30 alacloro 2,2 x 105 25 garlon 1,7 x 107 25 simazina 6,1 x 107 25.
It blocks the plastoquinone binding site of photosystem ii, disallowing the electron flow from. Animals in mammals, metabolism is principally by hydroxylation and dealkylation c. For post preemergent application ensure seed is adequately covered with. It was introduced by bayer in 1954 under the trade name of diuron mechanism of action.
Like most pesticides, diuron herbicide products contain ingredients in addition to diuron. Before spraying crops sensitive to gallant ultra herbicide, decontaminate using the following procedure. For maximum benefits, it is suggested to apply diuron 80df before crops and weeds emerge because it will prevent the seedlings from being able to compete with the crop. Pdf efficacy and selectivity of metribuzin and diuron in. Environmental protection agency epa or on material safety data sheets. See incorporation table for method of incorporation. We investigated the responses of chronically contaminated biofilms exposed to shortterm pulses 3 h of diuron. Diuron is a member of the class of phenylureas that is urea in. The resistant individuals can eventually dominate the weed population if these herbicides are used repeatedly.
Ministerio da agricultura, pecuaria e abastecimento mapa n. An experimental study was undertaken to highlight the potential ecotoxicological impact of the herbicide diuron on biofilms during flooding events in a small river morcille in the beaujolais vineyard area france. University of hertfordshire, 2011, pesticide properties database, april 2009 version. The primary hazard is the threat to the environment. A nonselective residual herbicide for the control of a wide range of grasses, broadleaf weeds in land not intended to bear vegetation, including industrial sites, railways, and other noncrop situations. There is a section 18, emergency exemption registration for diuron use on catfish in the states of arkansas, louisiana, and mississippi.
Pdf diuron n3,4dichlorophenyln,ndimethylurea, a herbicide belonging to the phenylurea family, is not only widely used to destroy. It belongs to the urea group of herbicides and is readily absorbed through the root system of plants and less readily through the leaves and stems. Sorption and desorption determine the amount of an herbicide in soil solution. The agency is considering the catfish use for registration under section 3 of fifra. Diuron 80df can be applied as a postemergent herbicide, but only on specific crops and noncrop areas. The addition of an approved nonionic surfactant minimum 80% active, where recommended, increases the contact effectiveness of diuron 80df. Multivariate analysis revealed significant diuronrelated changes in the. This work presents a study of the electrochemical degradation of the herbicide diuron using tiru x ti 1x o 2 and tiir x ti 1x o 2 x 0. Dcmu is a very specific and sensitive inhibitor of photosynthesis. Adsorption of herbicide diuron in pineapplegrowing soils of. Diuron 80df may also be used to control emerged weeds.
Do not apply directly to water, or to areas where surface water is present, or to intertidal areas below the mean high water mark. Whenever tank mixing diuron 80df with other products, observe all precautions, limitations and directions on labels of products used in combination with diuron 80df. Dcmu 33,4dichlorophenyl1,1dimethylurea is an algicide and herbicide of the arylurea class that inhibits photosynthesis. Diuron 800 wp l7041 e arysta lifescience south africa. Quarter fill the tank and add a standard alkali based laundry detergent at 500g or ml100l of water and circulate throughout the system for at least 15 minutes. It is used in many agricultural situations, general weed control in.
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