Abstract
Nitrification inhibitors have been used to enhance the efficiency of nitrogen fertilizers. This research evaluated the effectiveness of nontreated urea ammonium nitrate (UAN) at 0, 67, 135, 202, and 270 kg N ha-1 as well as UAN treated with nitrification inhibitors (pronitridine at 9.4 and 18.8 L ha-1 or nitrapyrin at 0.5 kg a.i. ha-1) to enhance N uptake and increase yield of corn (Zea mays L.). The study took place from 2012-2014 in upstate Missouri on a claypan soil. During the experiments, environmental conditions (high, medium, and low yielding years) affected corn response to pronitridine and nitrapyrin. In general, UAN plus pronitridine at 9.4 L ha-1 had similar effects on corn compared pronitridine at a higher (18.7 L ha-1) rate. During a high-yielding year (2014), in order to produce yields equivalent to 67 kg N ha-1 plus pronitridine at 9.4 L ha-1 or nitrapyrin, UAN needed to be increased 14 to 19%. Similarly, the amount of nontreated UAN needed to be increased 8 to 11% for yields to be equivalent to UAN at 135 kg N ha-1 plus pronitridine at 9.4 L ha-1 or nitrapyrin. Grain N removal and agronomic efficiency was highest with pronitridine at 9.4 L ha-1 and nitrapyrin combined with 67 and 135 kg N ha-1, respectively. This research indicates that pronitridine was as effective as nitrapyrin when added to a pre-emergence application of UAN placed between the rows in a dribble band.
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Claims 7
Claim · model-written summary
UAN with 9.4 L/ha pronitridine had similar effects on corn as a higher pronitridine rate (18.7 L/ha).
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- UAN plus pronitridine at 9.4 L ha-1e1
- Outcome
- effects on corne1
- Direction
- similare1
- Comparator
- pronitridine at a higher (18.7 L ha-1) ratee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to enhance N uptake and increase yield of corn (Zea mays L.)”
e1“In general, UAN plus pronitridine at 9.4 L ha-1 had similar effects on corn compared pronitridine at a higher (18.7 L ha-1) rate”
Claim · model-written summary
In a high-yielding year (2014), nontreated UAN had to be increased 14 to 19% to match yields with pronitridine at 9.4 L/ha or nitrapyrin.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- pronitridine at 9.4 L ha-1 or nitrapyrine1
- Outcome
- yieldse1
- Direction
- increasede1
- Value
- 14 to 19%e1
- Comparator
- UANe1
- Setting
- high-yielding year (2014)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to enhance N uptake and increase yield of corn (Zea mays L.)”
e1“During a high-yielding year (2014), in order to produce yields equivalent to 67 kg N ha-1 plus pronitridine at 9.4 L ha-1 or nitrapyrin, UAN needed to be increased 14 to 19%”
Claim · model-written summary
Nontreated UAN had to be increased 8 to 11% to match yields with UAN at 135 kg N/ha plus pronitridine or nitrapyrin.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- UAN at 135 kg N ha-1 plus pronitridine at 9.4 L ha-1 or nitrapyrine1
- Outcome
- yieldse1
- Direction
- increasede1
- Value
- 8 to 11%e1
- Comparator
- nontreated UANe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to enhance N uptake and increase yield of corn (Zea mays L.)”
e1“Similarly, the amount of nontreated UAN needed to be increased 8 to 11% for yields to be equivalent to UAN at 135 kg N ha-1 plus pronitridine at 9.4 L ha-1 or nitrapyrin”
Claim · model-written summary
Pronitridine at 9.4 L/ha gave the highest grain N removal and agronomic efficiency when combined with 67 kg N/ha.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- pronitridine at 9.4 L ha-1e1
- Outcome
- Grain N removal and agronomic efficiencye1
- Direction
- higheste1
- Qualifier
- combined with 67 and 135 kg N ha-1, respectivelye1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to enhance N uptake and increase yield of corn (Zea mays L.)”
e1“Grain N removal and agronomic efficiency was highest with pronitridine at 9.4 L ha-1 and nitrapyrin combined with 67 and 135 kg N ha-1, respectively”
Claim · model-written summary
Nitrapyrin gave the highest grain N removal and agronomic efficiency when combined with 135 kg N/ha.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- nitrapyrine1
- Outcome
- Grain N removal and agronomic efficiencye1
- Direction
- higheste1
- Qualifier
- combined with 67 and 135 kg N ha-1, respectivelye1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to enhance N uptake and increase yield of corn (Zea mays L.)”
e1“Grain N removal and agronomic efficiency was highest with pronitridine at 9.4 L ha-1 and nitrapyrin combined with 67 and 135 kg N ha-1, respectively”
Claim · model-written summary
Pronitridine was as effective as nitrapyrin when added to a pre-emergence UAN dribble-band application.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- pronitridinee1
- Outcome
- effectivee1
- Direction
- as effective ase1
- Qualifier
- pre-emergence application of UAN placed between the rows in a dribble bande1
- Comparator
- nitrapyrine1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to enhance N uptake and increase yield of corn (Zea mays L.)”
e1“This research indicates that pronitridine was as effective as nitrapyrin when added to a pre-emergence application of UAN placed between the rows in a dribble band”
Claim · model-written summary
Environmental conditions (high, medium and low yielding years) affected corn response to pronitridine and nitrapyrin.
- Taxon
- cornZea mays subsp. mayse0
- Outcome
- corn response to pronitridine and nitrapyrine1
- Qualifier
- environmental conditions (high, medium, and low yielding years)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to enhance N uptake and increase yield of corn (Zea mays L.)”
e1“Environmental conditions (high, medium, and low yielding years) affected corn response to pronitridine and nitrapyrin”
The same questions in other papers
nitrapyrin · nutrient: efficiency · Zea mays (maize)Positive and negative results
5 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- positive
3 papers more in this group
See all 7 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.