Introducing a New Product
2/14/2013
Nitrification Inhibitors What are they? Claims – Are They Real? Presentation by Mark Klish To Midwestern BioAg on 2-18-2013 Condensed from information presented at the 2013 Wis. Crop Management Conference See proceedings Vol. 52
Products
N-Serve®, or nitrapyrin
Instinct® is an encapsulated nitrapyrin
Super-U®, or DCD, dicyandaimide, or cyanoguanidine
Guardian®, also a DCD
Ammonium thiosulfate (ATS)
Nutrisphere-N®
Agrotain®, NBPT (N-(n-butyl) thiophosphoric acid triamide) ESN®, polymer coated urea
1
2/14/2013
N-Serve®, or nitrapyrin
Nitrification Inhibitor (NI). Has been studied and commercially used since the late 1960's May be used with anhydrous ammonia, dry ammonium and urea fertilizers Grain yield increases with the use of a NI have been inconsistent due to the variability of rainfall necessary to lead to nitrate leaching in sandier soils or denitrification in high clay soils Nitrification inhibitors block microbial conversion of NH4 to NO3, thereby maintaining applied N in the NH4 form. Since only NO3 is subject to leaching and denitrification, nitrification inhibitors can reduce these losses.
2
2/14/2013
Instinct® is an encapsulated nitrapyrin
Can be applied to dry fertilizer left on the soil surface for up to ten days for delay of ammonium fertilizer nitrification Received its label in 2009.
Super-U®, or DCD, dicyandaimide, or cyanoguanidine
Urease (UI) and nitrification (NI) inhibitor The UI and NI chemicals are impregnated into the urea granule Research has generally shown that its activity may be shorter than nitrapyrin Yield differences between fertilizer treated and untreated are inconsistent Best response on those soils and conditions where nitrate was lost through leaching or denitrification.
3
2/14/2013
Guardian®, also a DCD
Similar to Super-U®
Ammonium thiosulfate (ATS) "A standard product of the fluid fertilizer industry, ATS (12-0-0-26S) is a source of both nitrogen and sulfur," says North Dakota State University soil scientist Jay Goos. "When it's applied in a concentrated band, ATS also has an ability to slow soil urease and nitrification, so if the farmer needs sulfur anyway, it's a logical choice." ATS is not as strong of an inhibitor as Agrotain in UAN or N-Serve in NH3, but it's not as expensive. "It's roughly one third the cost," says Guy Swanson, who encourages farmers using his Exactrix delivery systems to co-band ATS with NH3. Seneca, Kansas, farmer Ryan Hammes has seen that combination pay. "We mix ATS with 10-34-0 and inject it right ahead of our NH3. This combination is one of the main reasons we've been able to reduce nitrogen application rates on our corn by one third," he says.
4
2/14/2013
Nutrisphere-N®
The formulation for dry fertilizer is a 30 to 60% maleic itaconic co-polymer calcium salt Marketed as a UI and NI Activity is related to its binding to copper ions necessary for the nitrification process in soil bacteria In laboratory studies Urea treated with Instinct® and Super-U® decreased nitrification, while treatment with Nutrisphere-N® had no effect. (R.J. Goos)
Agrotain®, NBPT (N-(n-butyl) thiophosphoric acid triamide)
Urease inhibitor (UI) Can be blended with urea or UAN (green in color) urease is abundant in most soil environments and its activity increases as soil temperatures increase. inhibits the urease enzyme, making volatilization virtually impossible for up to 14 days.
5
2/14/2013
ESN®, polymer coated urea Maximize yield – In areas of higher N loss, ESN has shown average yield increases of 15 - 20 bu / acre in corn with increases of 40 bu / acre or more occurring regularly. Wheat, Canola, Potatoes, and other crops also show proven yield increases.
Maximize quality – ESN has been proven to increase crop quality, including average wheat protein content increases of 0.5% - 0.75% and higher quality ratings in potatoes.
Maximize seed application Safety – Too much N can hurt seedlings and reduce yields, while placing limits on application practices. ESN protects seedlings from N damage and allows for up to 3x the safe rate of urea to be applied with the seed.
Wider application window, convenience, and ease of use – ESN protects your N investment, allowing you with a wider window of application and greater convenience in fertilizer application. It also flows freely, blends well, and works with conventional application equipment.
Safe for the environment – ESN is the only N source that protects your N investment from volatilization, denitrification, and leaching, virtually eliminating N loss to the environment, protecting the air and water. In the US, ESN qualifies for a variety of government environmental incentive programs.
Backed by independent research – ESN has over 400 crop years of research conducted with leading land grant universities.
Michigan State U field trials indicate that ESN is just as effective and has many benefits compared to anhydrous ammonia, urea, and UAN.
Summary
Certain nitrogen additives provide growers with options for extended activity of nitrogen nutrition for their crops. Their economics depends on rainfall following application, application methods, timing and soil characteristics, especially soil texture. Nitrapyrin has been effective in delaying nitrification. Dicyandiamide (DCD) has also been shown to be effective in delaying nitrification. Thiosulfates have been shown to delay nitrification, but the body of literature to support their use is much smaller than that of nitrapyrin. NBPT (Agrotain) is an effective urease inhibitor. Thiosulfates have shown some urease inhibition characteristics, but again, the body of literature that supports their use is small. Nutrisphere has been shown to be ineffective as both a nitrification and urease inhibitor.(D.W. Frazen, NDSU)
6
Nitrification Inhibitors What are they? Claims – Are They Real? Presentation by Mark Klish To Midwestern BioAg on 2-18-2013 Condensed from information presented at the 2013 Wis. Crop Management Conference See proceedings Vol. 52
Products
N-Serve®, or nitrapyrin
Instinct® is an encapsulated nitrapyrin
Super-U®, or DCD, dicyandaimide, or cyanoguanidine
Guardian®, also a DCD
Ammonium thiosulfate (ATS)
Nutrisphere-N®
Agrotain®, NBPT (N-(n-butyl) thiophosphoric acid triamide) ESN®, polymer coated urea
1
2/14/2013
N-Serve®, or nitrapyrin
Nitrification Inhibitor (NI). Has been studied and commercially used since the late 1960's May be used with anhydrous ammonia, dry ammonium and urea fertilizers Grain yield increases with the use of a NI have been inconsistent due to the variability of rainfall necessary to lead to nitrate leaching in sandier soils or denitrification in high clay soils Nitrification inhibitors block microbial conversion of NH4 to NO3, thereby maintaining applied N in the NH4 form. Since only NO3 is subject to leaching and denitrification, nitrification inhibitors can reduce these losses.
2
2/14/2013
Instinct® is an encapsulated nitrapyrin
Can be applied to dry fertilizer left on the soil surface for up to ten days for delay of ammonium fertilizer nitrification Received its label in 2009.
Super-U®, or DCD, dicyandaimide, or cyanoguanidine
Urease (UI) and nitrification (NI) inhibitor The UI and NI chemicals are impregnated into the urea granule Research has generally shown that its activity may be shorter than nitrapyrin Yield differences between fertilizer treated and untreated are inconsistent Best response on those soils and conditions where nitrate was lost through leaching or denitrification.
3
2/14/2013
Guardian®, also a DCD
Similar to Super-U®
Ammonium thiosulfate (ATS) "A standard product of the fluid fertilizer industry, ATS (12-0-0-26S) is a source of both nitrogen and sulfur," says North Dakota State University soil scientist Jay Goos. "When it's applied in a concentrated band, ATS also has an ability to slow soil urease and nitrification, so if the farmer needs sulfur anyway, it's a logical choice." ATS is not as strong of an inhibitor as Agrotain in UAN or N-Serve in NH3, but it's not as expensive. "It's roughly one third the cost," says Guy Swanson, who encourages farmers using his Exactrix delivery systems to co-band ATS with NH3. Seneca, Kansas, farmer Ryan Hammes has seen that combination pay. "We mix ATS with 10-34-0 and inject it right ahead of our NH3. This combination is one of the main reasons we've been able to reduce nitrogen application rates on our corn by one third," he says.
4
2/14/2013
Nutrisphere-N®
The formulation for dry fertilizer is a 30 to 60% maleic itaconic co-polymer calcium salt Marketed as a UI and NI Activity is related to its binding to copper ions necessary for the nitrification process in soil bacteria In laboratory studies Urea treated with Instinct® and Super-U® decreased nitrification, while treatment with Nutrisphere-N® had no effect. (R.J. Goos)
Agrotain®, NBPT (N-(n-butyl) thiophosphoric acid triamide)
Urease inhibitor (UI) Can be blended with urea or UAN (green in color) urease is abundant in most soil environments and its activity increases as soil temperatures increase. inhibits the urease enzyme, making volatilization virtually impossible for up to 14 days.
5
2/14/2013
ESN®, polymer coated urea Maximize yield – In areas of higher N loss, ESN has shown average yield increases of 15 - 20 bu / acre in corn with increases of 40 bu / acre or more occurring regularly. Wheat, Canola, Potatoes, and other crops also show proven yield increases.
Maximize quality – ESN has been proven to increase crop quality, including average wheat protein content increases of 0.5% - 0.75% and higher quality ratings in potatoes.
Maximize seed application Safety – Too much N can hurt seedlings and reduce yields, while placing limits on application practices. ESN protects seedlings from N damage and allows for up to 3x the safe rate of urea to be applied with the seed.
Wider application window, convenience, and ease of use – ESN protects your N investment, allowing you with a wider window of application and greater convenience in fertilizer application. It also flows freely, blends well, and works with conventional application equipment.
Safe for the environment – ESN is the only N source that protects your N investment from volatilization, denitrification, and leaching, virtually eliminating N loss to the environment, protecting the air and water. In the US, ESN qualifies for a variety of government environmental incentive programs.
Backed by independent research – ESN has over 400 crop years of research conducted with leading land grant universities.
Michigan State U field trials indicate that ESN is just as effective and has many benefits compared to anhydrous ammonia, urea, and UAN.
Summary
Certain nitrogen additives provide growers with options for extended activity of nitrogen nutrition for their crops. Their economics depends on rainfall following application, application methods, timing and soil characteristics, especially soil texture. Nitrapyrin has been effective in delaying nitrification. Dicyandiamide (DCD) has also been shown to be effective in delaying nitrification. Thiosulfates have been shown to delay nitrification, but the body of literature to support their use is much smaller than that of nitrapyrin. NBPT (Agrotain) is an effective urease inhibitor. Thiosulfates have shown some urease inhibition characteristics, but again, the body of literature that supports their use is small. Nutrisphere has been shown to be ineffective as both a nitrification and urease inhibitor.(D.W. Frazen, NDSU)
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