Nitrogen Basics
What is the process of converting NH4+ to No3-?
Nitrification
Use rate of Instinct NXTGEN?
12-24oz is the normal recommended rate. 12oz with reduced rate nitrogen, 24 with high rate. UP to 48oz with fall manure
What is the use rate of N-Serve?
1 Qt, .5qt with sidedress
How many EPA approved “nitrogen stabilizers” are there in the market? What are their brand names?
N-Serve, Instinct, Centuro
Nitrapyrin improves nitrogen being held in the soil by ___%?
28% greater soil retention. Could you reduce a growers nitrogen rate by 28%?
How much nitrogen can you loose through leaching and denitrification?
70% of all loss happens below ground
What do we use to clean out instinct in equipment?
Water
How long does 1Qt of N-Serve generally last from a fall and spring application?
Fall 90 days, Spring 60 days. N-Serve breaks down with heat and moisture.
How long has both Nitrapyrin and DCD been on the market?
Both were commercialized in 1970's
Nitrapyrin will reduce leaching by ____?
Leaching reduction of 16%
How far down the soil profile can 1 inch of rain move nitrates down the soil profile?
12 inch's in course textured soils, roughly 6" in clay loams
UAN Liquid Fertilizer contains which 3 sources of N? What is their % and can we stabilize them?
UAN (Urea 50%, Ammonia 25%, Nitrate 25%) All but the nitrate can be stabilized
Is N-Serve water soluable?
No, it is solvent based.
DCD is what % Nitrogen?
67%
Nitrapyrin will reduce greenhouse gas emissions by ___?
51% reduction in greenhouse gas emissions
After 3 days of saturated soils, how much nitrogen can you lose to denitrification?
10%, after 5 days it's actually 30% of nitrate nitrogen can be denitrified
What is our average yield increase for Instinct Spring applied?
8 bu in the fall, 6 in the spring pre, 5 bu sidedress
What is our average N-Serve Yield increase?
7 fall, 8 spring, 4 sidedress
Is DCD water soluable?
Yes, it will wash away after the first significant rainfall. ISU data shows that after 3 inches of rain DCD proves 0% nitrogen inhibition.
Is Nitrapyrin water soluable?
No, the active ingredient Nitrapyrin is not water soluble. Instinct is a water soluble formulation, but the active ingredient inside is not.
With 70 degree soil temps, how long does it take to convert ammonium to nitrate in the soil?
9 days
Urease inhibitors vs Instinct, When should we use one or the other, or both?
Urease inhibitors make sense with urea that lay's on top of the soil for a long period of time. But if it's incorporated with rain or tillage fairly timely, it's a waste of a growers money, even if they are cheaper up front.
When N-Serve has crystals around a pump or left in a tote, what are they?
The crystals are the active ingredient.
How much DCD is needed to be effective on Nitrosomonas bacteria compared to nitrapyrin?
30x the amount of nitrapyrin is what Ohio State would claim.
Does Nitrapyrin kill bacteria?
No, however Nitrapyrin can be a bactericide at high rates. At the rates we commercially use we put the bacteria in statis. We affect the AMO enzyme which they need to function.