Abstract
Application of nitrification inhibitor has potential to increase soil nitrogen (N) retention throughout the growing season and finally increase corn (Zea mays L.) yield. During the 2012–2014 growing seasons, on-farm field trials were conducted to determine the effects of nitrapyrin (Instinct) with two N sources, urea and urea ammonium nitrate, at two rates, 85% and 100% of recommended N, and side-dress on grain yield and soil inorganic N availability in the Red River Valley of the North Dakota. Preplant urea N at 100% recorded the greatest yield in 2 out of 3 years. At late sampling, the greatest soil inorganic N was observed with side-dress urea ammonium nitrate at 100% within 0–30 cm (last 2 years). For spring fertilizer N management, addition of nitrapyrin had no effect on yield and inconsistent effect on soil N availability. Our results suggest that fertilizer N management should be evaluated on a local scale and consider annual variability in weather.
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Claims 5
Claim · model-written summary
Preplant urea at 100% of recommended nitrogen gave the greatest yield in two of three years.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Preplant urea N at 100% recorded the greatest yield in 2 out of 3 years.”
e1“corn (Zea mays L.)”
Claim · model-written summary
Side-dress urea ammonium nitrate at 100% gave the greatest late soil inorganic nitrogen in the 0–30 cm layer in the last two years.
- Treatment
- side-dress urea ammonium nitrate at 100%e0
- Outcome
- soil inorganic Ne0
- Direction
- greateste0
- Qualifier
- within 0–30 cm (last 2 years)e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At late sampling, the greatest soil inorganic N was observed with side-dress urea ammonium nitrate at 100% within 0–30 cm (last 2 years).”
e1“corn (Zea mays L.)”
Claim · model-written summary
Adding nitrapyrin had no effect on yield under spring fertilizer nitrogen management.
- Treatment
- addition of nitrapyrine0
- Outcome
- yielde0
- Direction
- no effecte0
- Qualifier
- spring fertilizer N managemente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For spring fertilizer N management, addition of nitrapyrin had no effect on yield and inconsistent effect on soil N availability.”
e1“corn (Zea mays L.)”
Claim · model-written summary
Adding nitrapyrin had inconsistent effects on soil nitrogen availability.
- Treatment
- addition of nitrapyrine0
- Outcome
- soil N availabilitye0
- Qualifier
- spring fertilizer N managemente0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For spring fertilizer N management, addition of nitrapyrin had no effect on yield and inconsistent effect on soil N availability.”
e1“corn (Zea mays L.)”
Claim · model-written summary
The authors recommend evaluating fertilizer nitrogen management locally while considering annual weather variability.
- Outcome
- fertilizer N management should be evaluated on a local scale and consider annual variability in weathere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fertilizer N management should be evaluated on a local scale and consider annual variability in weather”
e1“corn (Zea mays L.)”
The same questions in other papers
nitrapyrin · yield · Zea mays (maize)Results differ
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See all 43 papers →nitrogen · yield · Zea mays (maize)Positive and negative results
1,905 papers in the same direction as this paper · 234 in the opposite direction · 45 reporting no difference from an alternative
- negative
- no effect
- positive
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See all 2,185 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.