Thus a product cannot be a nitrogen stabilizer if its action depends solely on a living organism. Nitrate can also be lost into the atmosphere through denitrification in warm, waterlogged soils. Urea granules can be coated with a urease inhibitor prior to application and the urease inhibitor can also be mixed into a urea ammonium nitrate (UAN) liquid solution. According to the product label, N-Serve 24 N stabilizer is an oil-soluble product that may be used with anhydrous ammonia, dry ammonium and urea fertilizers. Posted 1/27/2015 13:10 (#4342322 - in reply to #4342142) Subject: RE: Ammonium Thiosulfate as N stabilizer St. Charles, MO & Piper City, IL Sell a lot on wheat topdress. During this conversion process, ammonium becomes susceptible to gaseous losses as ammonia. Ammonium Thiosulfate (ATS) “Thus, this research suggests that ATS cannot be recommended solely as a nitrification inhibitor. Substances Excluded from The Definition of A Nitrogen Stabilizer The Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) requires that all pesticides sold or distributed in the United States (including imported pesticides) be registered by the U.S. Environmental Protection Agency (EPA) except where exempt from registration requirements. The substances that are specifically excluded are: As discussed in 40 CFR §152.6(b), a nitrogen stabilizer is excluded from regulation under FIFRA if the substance (or mixture of substances), meets all four of the following criteria: Increases nitrogen uptake, availability, usage of efficiency. However, it should be recognized that if ATS is used as a sulfur fertilizer then some inhibition of nitrification may occur.” Jay Goos, North Dakota State Univ., Ammonium Thiosulfate (ATS) is a clear liquid fertilizer that contains nitrogen and sulfur with a 12-0-0-26S analysis. Is ammonium thiosulfate a nitrogen stabilizer? When combined with a compatibility agent, N-Serve 24 may be used in the application of aqua ammonia and … Denitrification is the bacterial conversion and loss of nitrate-nitrogen to nitrogen gas. JavaScript seems to be disabled in your browser. See All Pest, Disease and Weed Identification, See All Beer, Hard Cider, and Distilled Spirits, See All Community Planning and Engagement, Growing Cover Crops for Nitrogen on Vegetable Farms, Introduction to Organic Farming: A Growing Opportunity for Pennsylvania Farmers. Any product that makes nitrogen stabilizer claims as listed in 40 CFR §152.6 will be presumed in the first instance to be a nitrogen stabilizer. Nitrogen Cycle Urea is quickly broken down in the soil into NH 3 (NH 2) 2 CO 2 + H 2 O → 2NH 3 + CO 2 NH3 undergoes further degradation Ammonium (NH 4 +) Nitrite (NO 2 ‐) Volatile N Nitrate (NO 3‐) 2 loss Nitrosomonas Nitrobacter Reduction This website compiles research results for a number of different fertilizer management products and can show you the number of trials that were conducted and a summary of the results, including the yield increases associated with using the product. If the producers of such products disagree, they must demonstrate that the product accomplishes its effects without affecting soil bacteria. Its multi-functional capabilities for corn and soybeans are what set it apart from other sulfur fertilizers. Nitrification inhibitors will provide the greatest benefit in scenarios where nitrate leaching losses or denitrification losses are likely. Nitrogen losses through leaching are reduced as well as Ammonia loss through volatilization. Urea is a high analysis (44-46% N) granular N fertilizer that is ultimately converted into ammonium and nitrate, the plant available forms of N. Get notified when we have news, courses, or events of interest to you. Why do we need this? For preventing denitrification losses, nitrification inhibitors will provide the greatest benefit when used on fields that are poorly drained. It does not create any new requirements or exemptions from the requirements of FIFRA. Nitrogen stabilizer products are valuable management tools to prevent losses of N fertilizer and increase N use efficiency by the crop. Nitrate is the form that can be moved out of the soil by leaching or lost by denitrification. Ammonium thiosulfate (ATS 12-0-0-26S) is a standard product of the U.S. fluid fertilizer industry. Improves crop utilization of applied nitrogen. Nitrification inhibitors are actually a pesticide that kills a specific group of nitrifying bacteria. Nitrogen When Your Corn Needs It. N-Serve ® nitrogen stabilizer works with anhydrous ammonia, while Instinct ® nitrogen stabilizer maximizes nitrogen when used with UAN, urea and liquid manure. Entering your postal code will help us provide news or event updates for your area. EPA considers a substance to be in commercial agronomic use if it is available for sale or distribution to users for direct agronomic benefit, as opposed to limited research, experimental or demonstration use. ATS is gaining in popularity across the country, specifically in central Illinois. To be subject to FIFRA, the product would also have to contain something other than a living organism that performs those functions. Therefore, the scenarios in which a urease inhibitor will provide the greatest benefit is when surface applying urea without incorporation and broadcast spraying UAN solution. As with any tool, the biggest benefits and greatest efficacy are generated by using the right tool, in the right place, and at the right time. Product Information: Density 11.1 lb/gallon Salting Out Temperature 6° C pH 7.2 - 8.0 Ammonium FIFRA Section 2(hh) excludes specific substances, as well as substances that meet certain criteria, from the definition of a nitrogen stabilizer. Urease is an enzyme produced by bacteria in the soil and contributes to the conversion of urea to ammonia, which can be lost through volatilization. Posted 1/27/2015 13:10 (#4342322 - in reply to #4342142) Subject: RE: Ammonium Thiosulfate as N stabilizer St. Charles, MO & Piper City, IL Sell a lot on wheat topdress. Ammonium Thiosulfate (ATS 12-0-0-26S) ATS is a standard product of the U.S. fluid fertilizer industry. Nitrogen is lost from soil through the activity of soil bacterial transformation of ammonium to nitrate, and from nitrate, the N can be lost leaching or denitrifcation. Sale or distribution of the product in any state, including the state which imposed the requirement to make the nitrogen stabilizer claim, is subject to the provisions of FIFRA. Nitrate is susceptible to losses through leaching, since nitrate is a negatively charged ion and cannot be held on the soil's cation exchange sites. For nitrification inhibitors, the most commonly used active ingredients are 2-chloro-6-(trichloromethyl)-pyridine (Nitrapyrin), dicycandiamide (DCD) and 3,4-dimethylpyrazole phosphate (DMPP). Nitrogen Stabilizer: When added to UAN, at a volume of 10-20%, research has shown that Ammonium Thio-Sulphate acts as a nitrification and soil urease inhibitor. Nitrogen is one of the primary nutrients for plant growth, development and reproduction; the main inorganic forms of nitrogen in soils are ammonium and nitrate. § 152.6(b)(4), these claims include: Such claims indicate that the substance has a mechanism involving action on soil bacteria. Increases nitrogen uptake, availability, usage, or efficiency. A brief explanation of each process follows: Nitrification, denitrification, ammonia volatilization, and urease production denote specific undesirable actions of soil bacteria with the result that nitrogen availability is decreased. Adding Ammonium Thiosulfate (ATS) (12-0-0-26S) to UAN solutions is the economical, effective and convenient way to stabilize and maximize costly nitrogen and increase your NUE value. Under 40 CFR §152.6(b)(1), living organisms are not considered to be substances. Therefore, nitrification inhibitors will provide a greater benefit for early fall applied fertilizer (when the soil temperatures are warm) as compared to late fall applied fertilizer (when the soil temperatures are cool). Nitrogen stabilizer products are valuable management tools to prevent losses of N fertilizer and increase N use efficiency by the crop. When mixed with other fluid fertilizers and applied to the soil in concentrated fertilizer bands, ammonium thiosulfate can enhance micronutrient availability, slow soil urease, slow nitrifi-cation, and improve the availability of P fertilizers. By entering your email, you consent to receive communications from Penn State Extension.

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