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Ask Our Experts – Frequently Asked QuestionsOur unmatched experience in providing rangeland and pasture management solutions and services has earned us the reputation as the Range & Pasture Experts. We’ve attempted to answer many of the most common questions we receive about pasture improvement and our products. If you don’t find the answers to your specific Range & Pasture questions here, feel free to Ask Our Experts. How do I contact a Dow AgroSciences sales representative for my area?How much do Dow AgroSciences Range & Pasture products cost? How can I identify the weeds in my pastures? Are there any grazing restrictions for Dow AgroSciences Range & Pasture products? Is there residual harm caused to animals and wildlife following herbicide application? What is the shelf life of Dow AgroSciences Range & Pasture herbicide products? How do I locate the closest dealer of Dow AgroSciences Range & Pasture products? Which Dow AgroSciences Range & Pasture products require a license to purchase and/or apply? How do I acquire a permit to purchase and apply restricted-use herbicides? Is there any literature available on Dow AgroSciences Range & Pasture products? What is the best time of year for herbicide applications? Why is picloram so useful in range and pasture weed control? Isn't mowing cheaper than chemical weed control? Can picloram be tank mixed with liquid fertilizer? If I can only budget for one, should I apply herbicide or fertilizer? Do I have to keep my livestock out of the treated area for a specific time period? How do I contact a Dow AgroSciences sales representative for my area?You’ll find contact information for your local Range & Pasture Specialist in our Range & Pasture Specialist Finder. How much do Dow AgroSciences Range & Pasture products cost?Selection, availability and pricing vary by retail dealer. Call or visit your local ag chemical dealer for product availability and pricing. Keep in mind that price does not necessarily equal value. Considerations, such as use rates, complete control vs. burndown, spectrum of control, residual activity, ease of use and grass tolerance, all help determine a product’s true value and your return on investment. How can I identify the weeds in my pastures?Our online Weed Guide is a good place to start. This easy-to-use guide will help you identify individual weeds and will offer you tips for and steps for effective treatment. If you need further assistance contact an agronomist with your local ag chemical dealer or your county Extension agent. Your local Dow AgroSciences Range & Pasture Specialist is another excellent resource. You’ll find contact information for your local Range & Pasture Specialist in our Range & Pasture Specialist Finder. Are there any grazing restrictions for Dow AgroSciences Range & Pasture products?For most livestock species – beef cattle, sheep, horses and goats – our Range & Pasture products carry no grazing restrictions, even during or immediately after application. However, there are grazing restrictions for lactating dairy animals. Consult individual product specimen labels for specific grazing and haying restrictions prior to application. Is there residual harm caused to animals and wildlife following herbicide application?Picloram, triclopyr, clopyralid, fluroxypyr and tebuthiuron, the active ingredients in Tordon® 22K, Grazon® P+D, Remedy®, Reclaim®, Spike® 20P, Redeem® R&P, Surmount™, PastureGard™ disrupt the growth process within the plant by affecting enzymes unique to plants. Research has shown that when these active ingredients are applied in accordance with their label directions, they do not have a similar effect on animals or insects. What is the shelf life of Dow AgroSciences Range & Pasture herbicide products?As long as the seal on the container is unbroken, the efficacy is almost indefinite. If the seal is broken, it may be subject to some evaporation or volatilization over several years. But practically speaking, we’ve never seen a problem with efficacy or mixing of our Range & Pasture herbicides because of the age in the container. If the product has been mixed with water, there may be some settling out of ingredients over time. Be sure to agitate the mix before you spray. How do I locate the closest dealer of Dow AgroSciences Range & Pasture products?Most agricultural chemical dealers can obtain Dow AgroSciences Range & Pasture products for you through their traditional distributors. Just ask for the Dow AgroSciences product you need by name and your local dealer should have no problem obtaining it for you. Or contact your local Dow AgroSciences Range & Pasture Specialist. Which Dow AgroSciences Range & Pasture products require a license to purchase and/or apply?Licensing requirements vary by state. However, Grazon P+D, Surmount and Tordon 22K herbicides are federally Restricted Use Pesticides. Thus, Grazon P+D, Surmount and Tordon 22K require a license to sell, purchase and make applications. Contact your state department of agriculture or your county Extension agent for local requirements. How do I acquire a permit to purchase and apply restricted-use herbicides?Each state has specific regulations regarding applying herbicides. Contact your state licensing board, your county Extension office or your state department of agriculture for certification and licensing requirements. Is there any literature available on Dow AgroSciences Range & Pasture products?We offer many items available as downloadable PDF files in Newsletters and Literature. What is the best time of year for herbicide applications?Since pastures typically contain a mix of weeds, a general recommendation is to treat weeds while they are actively growing. Fall is also an excellent time to treat knapweed, biennial thistles, such as musk or plumeless thistle, and perennial weeds, including Canada thistle and leafy spurge. Applications made during drought stress or other conditions preventing active growth may not provide acceptable control. You can find more specific treatment timing recommendations on the product specimen label. Why is picloram so useful in range and pasture weed control?Picloram, an active ingredient in Grazon® P+D, Surmount™ and Tordon® 22K herbicides, is highly active on many broadleaf weeds in rangeland and pastures. Several factors, including control spectrum, thorough translocation and residual activity, make it more effective than other methods or herbicides. Removing competition from weeds releases grass production and boosts the quantity and quality of forage. Always use herbicide treatments in conjunction with sound grazing practices and an overall weed management plan. Isn't mowing cheaper than chemical weed control?No. While herbicide treatments vary depending on product, rate applied and application method, our Range & Pasture products offer longer-lasting, more complete results than mechanical control methods. According to Texas A&M University research, mowing costs $12 and $14 per acre per trip – with two trips needed annually on average. Even then, you're only giving weeds a haircut. Regrowth occurs quickly. Mowing or shredding also carries hidden costs. When forage grasses are mowed with brush and weeds, the grass is unavailable to livestock. Frequent mowing can weaken grass stands, open sod cover and increase weed populations. Mechanical control can also leave ruts, damage turf and increase soil erosion. Can picloram be tank mixed with liquid fertilizer?Yes. And tank mixing picloram with liquid fertilizer saves you money and time. Kansas State University research shows that weed and feed can double cool-season grass production, as tests have shown on smooth bromegrass. Moisture and soil type influence the value of enhanced fertility. The type of grass you're fertilizing also influences the response. Cool-season, tame-grass pastures tend to respond more readily to added fertility. Native warm-season grasses tend not to require fertilizer. Talk to your ag chemical dealer about locally effective programs. If I can only budget for one, should I apply herbicide or fertilizer?Apply herbicide first, then fertilize the grass instead of weeds. Also consider the value of applying both. It's generally cheaper to grow forage grasses than to purchase additional forage or feed. And combining weed and feed generally can cut application costs in half. Do I have to keep my livestock out of the treated area for a specific time period?For most livestock species - beef cattle, sheep, horses and goats - our Range & Pasture products carry no grazing restrictions, even during or immediately after application. However, there are grazing restrictions for lactating dairy animals. For lactating dairy cows, allow seven days before grazing pasture treated with Grazon P+D and 14 days after applying Tordon 22K. Picloram is rapidly excreted in unchanged form by the animal via urine. Delay transferring livestock from treated areas onto land seeded with a desirable broadleaf crop for seven days. Urine and manure may otherwise injure sensitive broadleaf plants. Meat animals grazing for up to two weeks after treatment should be removed from the treated areas three days prior to slaughter. Consult individual product specimen labels for specific grazing and haying restrictions prior to application. |
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