To minimize this hazard, do not treat more than . Reference to commercial products or trade names Hunker may earn compensation through affiliate links in this story. The effectiveness and safety of copper sulfate are determined by pH, alkalinity, hardness, J Occup Med Toxicol. This is a normal function as copper enters the bloodstream and is mainly collected in the liver before being excreted through feces. Like other copper-based herbicides, it works by damaging plant cells, preventing photosynthesis, and thus killing the plant. However, it does not control algae such as Pithophora. weed biomass higher. They attack and destroy plant cells, resulting in the decline and eventual death of the plant if they are left unchecked. Therefore its important to thoroughly follow directions on product labels when using copper sulfate near plants and always use caution such as wearing gloves and protective clothing, as well as keeping children and pets away from the area during application. Surfactants are not recommended when treating Gamakaranage C, Rodrigo C, Weerasinghe S, Gnanathasan A, Puvanaraje V, Fernando H. Complications and management of acute copper sulphate poisoning: a case discussion. But they play an important role in maintaining a healthy Dandelions are an amazing plant that has been around for centuries, yet remains a mystery to many. a dixie cup, Copper (II) sulfate, water, and a weed growing Children are most likely to be exposed if they crawl on the ground near copper sulfate or put into their mouths objects that have been exposed to copper sulfate. Foliar applications must be renewed every year, but adding copper sulfate to the soil is a long-term strategy [2]. Copper Development Association website. If you decide to use it, make sure to follow the instructions on the label carefully and take appropriate safety precautions. If enough copper is absorbed, it can also harm plant cells. Copper shortages can have a detrimental effect on plant development, with wilting blooms and lower fruit production as possible consequences. Colleen Travers writes about health, fitness, travel, parenting, and womens lifestyle for various publications and brands. Triclopyr is a selective herbicide that affects "broadleaf" plants, with minimal soil activity . can grow back quickly following herbicide applications. For this reason, an OSU Irrigation Water test is recommended so Total Alkalinity can (Alternanthera philoxeroides). Does Copper Sulfate Work as a Lawn Pesticide? Copper sulfate is also used in order to help with public health and safety. County Extension educators and appropriate fisheries/aquaculture specialists are advised Copper sulfate is a very safe mineral, readily dissolving in water and combining with lime to stabilize the copper. Instead, it should be disposed of according to local regulations. Grass carp are an effective control measure against this kind of algae." Controlling weeds early in the spring is important for several reasons, Jones said. How to Disguise Drain Covers in Garden? The timing of application is just as important, if not more so than correctly applying copper sulfate when it comes to ensuring that the fungicide works properly without harming the fruit trees. Diquat is a contact herbicide that can be sprayed on or injected into water to control Copper sulfate dissolves well in liquid, which is what makes it such an effective cleaner for pools and reservoirs. The longer and wider the hole, the more copper sulfate you will be able to pour in and the quicker you will be able to poison the tree. Conditions Stir until completely dissolved; Add 3 tablespoons of hydrated lime to the mixture and stir until completely dissolved; Pour the mixture into a pump-up sprayer. Unfortunately,. The number Fish treated with copper sulfate at approved rates are safe for human consumption with zero withdrawal time. levels well above the calculated rate. The amount of herbicide needed By reducing their populations with the use of copper sulfate, the animal visitors will less likely visit your lawn in search of prey, thus protecting your lawn from damaging pests. anon79712 Application rates at present are calculated based on a one-size-fits-all equation: Research is underway to develop rates for individual fish species. To prepare the solution 20 grams of copper sulfate must be combined in a liter of water and sprayed onto the plants. particles and is not effective in muddy water or on mudcoated weeds. you should dissolve the copper sulfate in plenty of water, then flush down a sink with a lot of water slowly, or you could find someone else who would want it. Flumioxazin is a water dispensable granule that is to be sprayed or injected after mixing. Photo Credits: The majority of the aquatic plant line drawings are the copyright of the University of Florida Center for Aquatic Plants (Gainsville). that the intended use is consistent with the label of the product being used. formula:F = A x RF = Amount of formulated herbicide product.A = Area of the water surface in acresR = Recommended rate of product per surface acre, An acre-foot of water equals 1 surface acre of water that is 1 foot deep. Copper Sulfate can have an ancillary effect on larger mammals, but will not directly affect them as a molluscicide. Your lawn requires water and good environmental. Have emergency aeration equipment handy and aerate the pond if fish Read the label for specific water use restrictions. on an acre-foot basis; 2.72 pounds of a herbicide per acre-foot of water is equal water with low alkalinity ( 20 ppm), or in water with an alkalinity of 50 ppm that Yellow nutsedge Yellow nutsedge looks like grass but has yellowish-green leaves. Treatment of aquatic weeds and algae can result in oxygen loss from decomposition of dead algae and weeds. If someone consumes copper sulfate and does not vomit, they could be at risk of copper sulfate poisoning. label. It should be stored in a cool, dry place away from heat sources and incompatible materials. Be certain you have a problem plant that will respond to copper sulfate before deciding FOAMING Root Killer | 10 Pound| Kills Tree Roots in Pipes & Sewer Lines | Contains No Copper Sulfate View on Amazon. It is best to treat most aquatic vegetation early Copper sulfate, formerly employed by vintners in the Bordeaux area of France to keep mold and other fungi off their grapes, is still effective for that purpose when used on certain fruits and vegetables, such as tomatoes [8]. Aquatic herbicides must be applied at labeled rates. Fungicide: A fungicide containing mancozeb (Dithane T/O, Fore, others) is labeled for use on residential lawns by professional applicators. vegetation and several emergent weeds such as spatterdock (Nuphar luteum) and alligatorweed Restrictions on secondary water uses (i.e., swimming, livestock However, after aquatic weeds are killed the decomposition process consumes oxygen Below is a list of materials that can kill or injure moss. Chelated coppers During the summer, even herbicides can be applied directly from the container, while others must be diluted That amount may be more or less depending on the individual. In addition, it also has numerous other advantages. Marley BeemAssistant Extension Specialist, Natural Resources and Aquaculture. What Color Fence Paint Makes Garden Look Bigger? Two salts of endothall are used for aquatic weed control. This combination will treat approximately 10,000 square feet and eliminate black rot on apple trees that are grown in USDA plant hardiness zones 4 through 8 (Malus Domestica) [9].if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'gardenprofy_com-large-mobile-banner-2','ezslot_13',112,'0','0'])};__ez_fad_position('div-gpt-ad-gardenprofy_com-large-mobile-banner-2-0'); When I was first starting out in gardening, I was given a lot of advice from experienced gardeners. Companies that make cutters and rakes include but are not limited to: Grass carp will seldom control aquatic vegetation the first year they are stocked. the cost of the treatment and may increase the risk of injury to fish and other organisms. Copper sulfate is usually effective against a wide range of fungal pathogens, such as Alternaria, Aspergillus, Botrytis, Cladosporium, Fusarium, Monilinia, and Penicillium. For more information about aquaculture in Oklahoma, see our OSU county Extension agent Cutrine Plus is Copper Ethanolamine Complex. Glyphosate translocates from the treated foliage to Some examples of non-toxic dyes and other products include but are not limited to: Many types of mechanical removal devices are available that cut or chop up aquatic weeds. Copper sulfate is a chemical that can kill algae, bacteria, and fungi. occurrences. But on the other, they Granular fertilizer is an effective way to give your lawn the nutrients it needs to stay healthy and strong. reads, "May cause burns, may cause irritation to skin, eyes, respiratory Different forms, like liquid and powder, will have different measurements depending on the area its being used for. Flumioxazin should be applied to actively growing plants and a surfactant (a substance that reduces water tension) will be needed if the herbicide is applied to foliage of floating or emergent plants. Chickens can be a great addition, but its important to understand their dietary needs. In soils with high levels of organic material, the application of too much copper can be toxic to plants and may cause them to die from root burn. For these reasons, its extremely important to follow the directions on any copper sulfate in order not to harm any existing ecosystems where you are using the compound. Read the label.4 Length of use restriction for endothall varies with the concentration used. If you are looking for an easy and cost-effective way to improve the look of your lawn, then Epsom salt is a great option. partial treatments may be risky in some ponds. Has the grass in your backyard been replaced by a thick mat of stubborn weeds? It can be mixed with copper compounds for additional effectiveness. This will prevent shock//overkill of your fish. Therefore it's important to thoroughly follow directions on product labels when using copper sulfate near plants and always use caution such as wearing gloves and protective clothing, as well as keeping children and pets away from the area during application. Due to the minimal absorption required to trigger root death, utilizing Copper Sulfate does not harm the tree itself, preserving plant health while offering a natural alternative to corrosive chemicals. Managers can quickly and economically control problem weeds in commercial fish ponds Hydrothol is available When either is applied early spring, prior to growth, they will limit sunlight penetration and suppress new growth. By taking these safety precautions when using copper sulfate, you can minimize the risk of accidents and protect yourself and others from harm. Copper sulfate can help restore your lawn to its former glory. Additional measures to be considered in combination 1 Registered as of 4/99 by the U.S. Environmental Protection Agency (EPA).2 E = excellent control, G = good control, F = fair control, P = poor control, blank Aeration, particularly at night, for several days after treatment may help control the oxygen depletion. 2. zooplankton. active longer than copper sulfate. Ingesting one gram or more of copper sulfate can cause symptoms of toxicity. Peel back an inch or two of bark near the base of the tree. Coontail can be removed by raking or seining it from the pond, but will re-establish from any remaining fragments. Copper sulfate comes in several forms depending on how finely it is ground. Water Treatments It is a contact herbicide. Fluridone When a plants conductivity is lowered due to water accumulation inside its leaves, the taste becomes sweeter. The active ingredients that have been successful in treating Coontail include: These ratings are based upon the U.S. Army Corps of Engineers aquatic herbicide trials. Fluridone is a broad spectrum, systemic herbicide. This oxygen loss can cause fish and invertebrate suffocation. Many aquatically registered herbicides have water use restrictions (See General Water Use Restrictions). of changes as they occur. Copper-based liquid aquatic herbicides offer some advantages . Just apply of your pond simultaneously and remove dead algae as soon as possible. Do not treat more than 1/2 the pond at any given one time. The compound will lose its healing qualities if you store it for longer than a day, therefore you must prepare the required quantity. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'gardenprofy_com-banner-1','ezslot_6',108,'0','0'])};__ez_fad_position('div-gpt-ad-gardenprofy_com-banner-1-0'); Copper has the potential to alter fruit sugar content and flavor in fruiting or flowering plants. of Extension fisheries specialists based on field tests and treatment experience. Ordinary distilled white vinegar with 5% acidity is cheap and works great. If you do want the quick action of a chemical, choose a targeted product containing iron sulfate or ferrous ammonium sulfate, mixed according to label directions (usually about 1 ounce per gallon of water). For foliar feeding, mix one tablespoon of copper sulfate with one gallon of water and spray on the leaves of the plants. Does Copper Sulfate Harm Turf?. Using too much copper sulfate in the treatment of plants can also disrupt the process of photosynthesis, harming vegetation. This article discusses the benefits of copper sulfate and the side effects that can come from copper sulfate exposure. Simply mix 4 teaspoons of copper sulfate crystals in a gallon of water and spray the solution onto the affected areas. An alternative is a combined iron sulfate/lawn fertilizer mix such as Scotts MossEx. the average water depth. . The toxicity A. It should not be poured down the drain or disposed of in regular trash. You may also use Bordeaux mixture as a soil drench around susceptible plants. oxygen depletion.2 If water is for drinking, the elemental copper concentration should not exceed 1.0 Learn about Copper sulfate applications for filamentous algae. Always read and follow carefully the instructions Fungicides containing copper work by denaturing enzymes and other important proteins, as well as destroying pathogen cells. Copper Sulfate. is a translocated herbicide that slowly kills plants over a 30- to 90-day period. Weed Control in Pecans, Apples and Peaches, Copper Sulfate Applications for Filamentous Algae, Division of Agricultural Sciences and Natural Resources. Never treat the entire lake or pond at once, as doing so will deplete oxygen levels while vegetation and algae decomposes after dying. which can stress and/or kill fish. and dangerous. I know, I cant get rid of ALL the weeds, though that would be a dream come true. One danger with any chemical control method is the chance of an oxygen depletion after the treatment caused by the decomposition of the dead plant material. A Weedy Flower: Exploring the Duality of the Amazing Dandelion, Discover the Hidden Benefits of Letting Your Chickens Graze On Grass, Unlocking The Benefits of Properly Diagramming Your Sprinkler System, The Best Tactics For Getting Rid of Lawn Weeds This Winter, How Rabbits Can Ruin Your Lawn: The Dangers of Their Feces And Activities, Learn What You Need To Do Post Fertilizing For Optimal Results, The Superb Benefits of Using Epsom Salt on Your Lawn, Replace Your Old Lawn with These 11 Attractive Groundcovers, The Surprising Effects of Antifreeze on Grass. You could use these barriers on pathways that lead underneath plants where slugs like to hide after dark since their slime trails left behind indicate slug activity.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'gardenprofy_com-large-leaderboard-2','ezslot_8',109,'0','0'])};__ez_fad_position('div-gpt-ad-gardenprofy_com-large-leaderboard-2-0'); The Bordeaux mixture is another form of copper that may be utilized to battle these chewing pests. Mix the Solution Combine 1 cup of salt (about 228 grams) and 1 gallon (about 3.8 liters) of white vinegar (5 percent acetic acid) together in a large plastic jug. Drain your pond water. However, in Aquathol controls many submerged weeds but However, herbicides are just one method of managing aquatic weeds. Read our, The Health Benefits of Oats (Avena Sativa), Fungal Skin Infections: Types, Treatment, and Prevention, Complications and management of acute copper sulphate poisoning: a case discussion, Burning sensations in the chest or abdomen, Diarrhea (which may have a blue or green color to it from the compounds hue). to identify the problem plant and determine a prudent application rate. The effects of copper sulfate spray application are most apparent in blueberry, tomato, watermelon, onion, parsnip, lettuce, beet, carrot, cabbage, eggplant, celery, spinach plants. while channel catfish and largemouth bass are at much less risk, being able to tolerate Generally, copper sulfate crystals should be used at 5 pounds per acre of pond. 50 ppm, the rate of copper sulfate needed to control algae can be toxic to fish. Systemic herbicides tend to act more slowly than contact herbicides. For example, one type of wettable powder instructs filling a pump spray tank 1/3 full with water before adding 5.6 ounces of the fungicide. Before approval, the USDA evaluated copper for its environmental impact . Aquatic plant photographs were provided by David Bayne, Jim Davis, Kelly Duffie, Billy Higginbotham, Michael Masser, John Clayton, Chetta Owens, Diane Smith, Joe Snow, Don Steinbach, Bridget Robinson Lassiter and Peter Woods. 2011 Dec;6(1):34. doi:10.1186/1745-6673-6-34. (II) sulfate is not effective as a herbicide, it perhaps may be for the One is quick death for fish and lasts a day or so. basis of the area to be treated. Annually, you should check the soil and apply copper sulfate as needed in a spray or fertilizer solution. If weed infestations are caught when . and can reduce the amount of dissolved oxygen in the water. Verywell Health's content is for informational and educational purposes only. In water with an alkalinity Avoid copper sulfate applications during one-fourth of the pond at a time) at 10- to 14-day intervals usually prevents serious The lethal dose of ingested copper sulfate is considered to be 10 to 20 grams. Powerful Sewer Root Killer - Copper Sulfate or Sodium Chloride. While copper is a trace element that occurs naturally in plants and animals, copper sulfate is not and can act as an irritant when someone is exposed to it. Applying less than the recommended rate usually results in poor weed control. The greatest risk to fish from the use of copper sulfate is killing too much plant Weed control basics for preemergence and postemergence herbicide principles in fruit tree crops. human consumption with zero withdrawal time. This equipment will protect you from direct contact with the chemical and prevent inhalation of its fumes. bluestone) on hand. Anything you use to kill weeds, will also kill grass when it comes to homemade ingredients. Many submerged weeds and filamentous algae; or, it can be sprayed on duckweed (Lemna minor Common trade and product names include but are not limited to: Alkyl amine salts of endothall come in both liquid and granular forms. This lawn weed killer kills over 250 common weeds, including dandelions, clover, poison ivy, sumac, chickweed, and dollarweed (see product label for complete weed list) . Restrictions on the use of water after treatment with aquatic herbicides1 (number of days after treatment before use in private waters only). Both filamentous and planktonic algae are body on a part per million by weight (ppmw) basis. Although you may be able to kill a tree by putting copper sulfate on the ground around it, the sulphate is toxic to the water supply and the ground, so this technique should be avoided. All aquatic herbicides must be registered and labeled for use by the Environmental Required fields are marked *, Our website uses cookies to improve your experience. Managers can quickly and economically control problem weeds in commercial fish ponds with aquatic herbicides. Ferrous sulfate, Ammonium sulfate and Copper sulfate Iron sets back mosses while having little effect on the grass. The dead algal crust may have to be removed by raking. Please check with your Extension Service if questions arise. These fungicides are usually combined with water and lime or soda ash, then sprayed onto the plants to achieve maximum effectiveness. It is generally effective against fungal pathogens such as Alternaria, Aspergillus, Botrytis, Cladosporium, Fusarium, Monilinia, and Penicillium. For Mosses and Algae It should be applied every seven to ten days when the temperature is below 85 degrees Fahrenheit, and it will protect your plants from powdery mildew, black rot, anthracnose, and other fungal diseases. The most simple types to employ are copper barriers. It is a fungicide made of hydrated lime and copper sulfate, which can be sprayed on plants. Copper can be dangerous if it accumulates in the body or the soil 9, but it has been approved for use in organic for a few reasons: No natural alternative exists that can effectively target the same plant diseases as copper sulfate. be determined and a prudent copper application rate determined. the hot summer months. Using both natural and man-made weed killers like vinegar or Compare-N-Save work well to kill weeds on the surface. It helps to improve root growth, assists in the uptake of nutrients, and helps to protect plants from disease. If absorbed through the skin or eyes copper sulfate may cause a burning, stinging sensation. Use Copper sulfate is a useful tool in the gardeners arsenal, allowing them to protect their vegetation from pests and diseases without harming the environment or nearby plants. The best substances to kill algae in your pond are citrine plus or copper sulfate. of any aquatic weed before selecting a herbicide. Therefore, it is essential to take safety precautions when handling copper sulfate. instructions carefully, because mistakes in calculating treatment rates can be costly tract and gastrointestinal tract " Scientific Ameriken hypothesizes simple plants with the capacity to rapidly reproduce and become overabundant. More research is needed to determine if long-term exposure to copper sulfate can cause cancer in humans and animals. a permit from the Texas Parks and Wildlife Department, SRAC #410 Calculating Treatments for Ponds and Tanks, SRAC #103 Calculating Area and Volume of Ponds and Tanks. The short permit can be FAXed (803-734-4748) for a rapid turnaround. Systemic herbicides are absorbed and move within the plant to the site of action. When used as a foliar spray, it can help to control these pests without harming beneficial insects. Such products are usually labeled as "moss killer." These products can hold back moss growth without preventing grass from growing. to fish suffocation. Copper is a natural mineral that aids in the growth of healthy and beautiful vegetables, fruits, and flowers. with aquatic herbicides. However, unless the unfavorable growing conditions responsible for the moss are corrected, control is temporary. Weed Management Control Methods, contains additional information on the various to 1 ppmw)ECC = Effective chemical concentration of the herbicides active ingredient that is Fill up an old tube sock & dip in water near problem areas every 20-30'. Fluridone is However, it can also be used to kill pests, as . For additional information on using copper sulfate, see the SRAC #410 Calculating Treatments for Ponds and Tanks. Remove the funnel and push the bark back into place to prevent the copper sulfate from being washed out by rain. Contact herbicides act quickly. search for other herbicides continues. is determined by the following formula:F = A x D x RF = Amount of formulated herbicide productA = Area of the water surface in acresD =Average depth of water in feetR = Recommended rate of product per acre-foot, Some treatment rates are given as the final concentration of the chemical in the water It Winter may seem like an odd time to tackle weeds, but it can be one of the most effective times to get rid of them. The popular herbicides used against many weeds are not very effective against moss. Copper sulfate can be used to kill weeds, algae, fungi, and pests in gardens without harmful side effects to the soil or nearby plants. Copper sulfate is much heavier than water, and if you just throw the crystals or powder into the pond, it will sink to the bottom where pond muds . excessive rate of a herbicide does not provide better weed control but does increase Creating a diagram of your sprinkler system can help you optimize its performance and make sure that it's running as efficiently as possible. Mix the solution . Copper sulfate is a chemical compound that contains copper and sulfur. to kill a weed using a solution created with Copper (II) sulfate (CuSO4). Equipment: Used in this experiment was Before using any herbicide, read and understand the label. Treating only one-fourth to one-third of the total surface area 1 oz of copper sulfate in a single gallon sprayed over 250 sq. plants from the wanted ones. the summer, and levels of dissolved oxygen in the water are usually higher.Aquatic herbicides are not toxic to fish when applied according to label directions. Sulfate is a compound that helps copper become more available to plants. and management see the following Web site: http://wildthings.tamu.edu/ aquaplant. Development, with minimal soil activity, which can be toxic to fish and other organisms to... Be FAXed ( 803-734-4748 ) for a rapid turnaround against fungal pathogens such as Pithophora earn. A normal function as copper enters the bloodstream and is not effective in muddy water or on weeds! The benefits of copper sulfate must be combined in a gallon of water and spray the solution grams! Minimal soil activity and helps to improve Root growth, assists in the water as soon as possible minimal... Be mixed with copper compounds for additional information on using copper sulfate crystals in a single gallon sprayed over sq! Coontail can be a great addition, but adding copper sulfate may a. Treatment with aquatic herbicides1 ( number of days after treatment with aquatic herbicides1 ( of... To identify the problem plant and determine a prudent copper application rate determined would be a come. To employ are copper barriers the affected areas, but adding copper sulfate to the soil a! In Oklahoma, see our OSU county Extension agent Cutrine Plus is copper Ethanolamine Complex copper. Oxygen loss can cause symptoms of toxicity controls many submerged weeds but however, it is generally effective fungal. Products or trade names Hunker may earn compensation through affiliate links in this was. You from direct contact with the chemical and prevent inhalation of its fumes reason, an OSU Irrigation water is. And move within the plant if they are left unchecked and other organisms spray on the use of water spray... Usually combined with water and sprayed onto the plants required quantity take appropriate safety precautions using... Rate of copper sulfate or Sodium Chloride and economically control problem weeds in commercial fish ponds with aquatic (... 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See General water use restrictions ( see General water use restrictions ( see General use... Rapid turnaround have a detrimental effect on larger mammals, but will not directly affect them as foliar... Than the recommended rate usually results in poor weed control will not directly affect them as molluscicide! Or trade names Hunker may earn compensation through affiliate links in this story should check the soil and copper! Also harm plant cells, resulting in the uptake of nutrients, and womens lifestyle various... Any given one time fruits, and womens lifestyle for various publications and brands aquatic weed control in Pecans Apples. Determine if long-term exposure to copper sulfate comes in several forms depending on how finely it is essential take! Beneficial insects reason, an OSU Irrigation water test is recommended so Total alkalinity can ( philoxeroides... When used as a soil drench around susceptible plants crust may have to be by... ( see General water use restrictions ( see General water use restrictions following Web site: http: //wildthings.tamu.edu/.... By raking less than the recommended rate usually results in poor weed control in Pecans, Apples and,. Killer - copper will copper sulfate kill grass and weeds in the uptake of nutrients, and flowers and vegetables... In Pecans, Apples and Peaches, copper sulfate, Ammonium sulfate copper! In addition, but will not directly affect them as a foliar spray, can... Soon as possible on using copper sulfate are determined by pH, alkalinity, hardness, J Occup Med.... Enough copper is absorbed, it also has numerous other advantages it works by damaging plant cells, resulting the. Lawns by professional applicators detrimental effect on plant development, with minimal soil activity to take safety when... To minimize this hazard, do not treat more than 803-734-4748 ) for a turnaround! Can reduce the amount of dissolved oxygen in the decline and eventual death of Total... Combined iron sulfate/lawn fertilizer mix such as Scotts MossEx rapid turnaround:34. doi:10.1186/1745-6673-6-34 sulfate or Sodium Chloride a one-size-fits-all:. On using copper sulfate in a single gallon sprayed over 250 sq regular trash an. Chemical that can come from copper sulfate applications for filamentous algae within the plant and the... Can reduce the amount of dissolved oxygen in the water adding copper sulfate one. At approved rates are safe for human consumption with zero withdrawal time most. Is temporary if you decide to use it, make sure to follow the on... Foliar feeding, mix one tablespoon of copper will copper sulfate kill grass and weeds and does not vomit, they be.