Abstract
Synchrony between soil mineral nitrogen (N) supply and crop N demand is important for optimal plant growth. Excessively wet conditions expose poorly drained soils to an increased potential of N loss and reduced N use efficiency. A two-year experiment with wheat (Triticum aestivum L.) was initiated in 2014 and concluded in 2016 in northeastern Missouri in the United States (USA). The objective of this experiment was to evaluate the effects of nitrapyrin and pronitridine nitrification inhibitors (NI) applied as an early or late-split application timing (40:60%) of 79 kg N ha−1 or 112 kg N ha−1 on winter wheat soil and plant N status, as well as grain yield. Both NIs had no effect (p = 0.3917) on yield, while there was an interaction between year and the urea ammonium nitrate (UAN) rate on grain yield. Yields were similar (3550 kg ha−1 to 3686 kg ha−1) in 2015 between UAN application rates. UAN at 112 kg N ha−1 resulted in a 551 kg ha−1 greater yield than UAN at 79 kg N ha−1 in 2016. Nitrapyrin and pronitridine did not significantly affect soil ammonium or nitrate–N concentrations at depths of 0–15 cm and 16–30 cm compared to the absence of NI over the period of three months after application. Nitrapyrin with UAN at 112 kg N ha−1 had the highest grain test weight. Further testing of these NIs in combination with UAN for winter wheat production is needed under different climatic and environmental conditions to develop comprehensive management recommendations.
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Claims 9
Claim · model-written summary
Nitrapyrin had no significant effect on wheat yield.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- Nitrapyrint0
- Outcome
- yielde0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both NIs had no effect (p = 0.3917) on yield”
t0“Nitrapyrin and Pronitridine Nitrification Inhibitors with Urea Ammonium Nitrate for Winter Wheat Production”
Claim · model-written summary
Pronitridine had no significant effect on wheat yield.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Pronitridinet0
- Outcome
- yielde0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both NIs had no effect (p = 0.3917) on yield”
t0“Nitrapyrin and Pronitridine Nitrification Inhibitors with Urea Ammonium Nitrate for Winter Wheat Production”
Claim · model-written summary
Year interacted with UAN rate for grain yield.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- urea ammonium nitrate (UAN) ratee0
- Outcome
- grain yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was an interaction between year and the urea ammonium nitrate (UAN) rate on grain yield.”
t0“Winter Wheat”
Claim · model-written summary
Wheat yields were similar between UAN rates in 2015, at 3550–3686 kg ha−1.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- UAN application ratese0
- Outcome
- Yieldse0
- Direction
- similare0
- Value
- 3550 kg ha−1 to 3686 kg ha−1e0
- Qualifier
- 2015e0
- Comparator
- UAN application ratese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yields were similar (3550 kg ha−1 to 3686 kg ha−1) in 2015 between UAN application rates.”
t0“Winter Wheat”
Claim · model-written summary
UAN at 112 kg N ha−1 yielded 551 kg ha−1 more than 79 kg N ha−1 in 2016.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- UAN at 112 kg N ha−1e0
- Outcome
- yielde0
- Direction
- greatere0
- Value
- 551 kg ha−1e0
- Qualifier
- 2016e0
- Comparator
- UAN at 79 kg N ha−1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“UAN at 112 kg N ha−1 resulted in a 551 kg ha−1 greater yield than UAN at 79 kg N ha−1 in 2016.”
t0“Winter Wheat”
Claim · model-written summary
Nitrapyrin did not significantly affect soil ammonium or nitrate–N concentrations.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Nitrapyrine0
- Outcome
- soil ammonium or nitrate–N concentrationse0
- Direction
- did not significantly affecte0
- Qualifier
- depths of 0–15 cm and 16–30 cme0
- Comparator
- absence of NIe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrapyrin and pronitridine did not significantly affect soil ammonium or nitrate–N concentrations at depths of 0–15 cm and 16–30 cm compared to the absence of NI over the period of three months after application.”
t0“Winter Wheat”
Claim · model-written summary
Pronitridine did not significantly affect soil ammonium or nitrate–N concentrations.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- pronitridinee0
- Outcome
- soil ammonium or nitrate–N concentrationse0
- Direction
- did not significantly affecte0
- Qualifier
- depths of 0–15 cm and 16–30 cme0
- Comparator
- absence of NIe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrapyrin and pronitridine did not significantly affect soil ammonium or nitrate–N concentrations at depths of 0–15 cm and 16–30 cm compared to the absence of NI over the period of three months after application.”
t0“Winter Wheat”
Claim · model-written summary
Nitrapyrin with 112 kg N ha−1 UAN had the highest grain test weight.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Nitrapyrin with UAN at 112 kg N ha−1e0
- Outcome
- grain test weighte0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrapyrin with UAN at 112 kg N ha−1 had the highest grain test weight.”
t0“Winter Wheat”
Claim · model-written summary
The authors recommended further testing under varied climate and environmental conditions.
- Taxon
- winter wheatTriticum aestivume0
- Outcome
- Further testing of these NIs in combination with UANe0
- Qualifier
- different climatic and environmental conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Further testing of these NIs in combination with UAN for winter wheat production is needed under different climatic and environmental conditions to develop comprehensive management recommendations.”
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See all 2,061 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.