Abstract
Core Ideas Slow‐release fertilizers improve the synchronization of N release and crop needs. Applying N source in a band conserves N for greater corn yield and N uptake. Chlorophyll readings and stalk NO 3 –N are useful tools for improving corn N management. Improved N management for corn ( Zea mays L.) production is necessary to maintain N in the root zone for greater yield and N uptake. Three field experiments were conducted in Nebraska on Thurman loamy sand at Concord in 2008, on Alcester silty clay loam at Haskell Agricultural Laboratory (HAL) in Concord in 2009, and on Hord silt loam at Pierce in 2009. Treatments included four N rates (56, 112, 168, and 224 kg N ha −1 ) and five N‐source–placement systems. The five N systems were broadcast polymer‐coated urea (PCU), broadcast urea–NH 4 NO 3 (UAN), a broadcast 7:3 mixture of UAN and Nitamin–Nfusion (NF), band UAN, and band NF. Each trial included a zero‐N control. Only Concord had significant precipitation within 21 d after fertilizer application (141 mm). Results indicated that use of broadcast PCU and band NF had slight but N‐conserving effects as measured by plant indicators. Band NF had 3% greater SPAD reading and 47% greater stalk NO 3 –N compared with broadcast UAN across sites. Corn fertilized with broadcast PCU produced 4 to 13% (0.5–1.8 Mg ha −1 ) greater grain yield and 7% greater grain and plant‐N uptake at Concord and HAL compared with broadcast UAN. Band NF increased grain yield by 4% (0.6 Mg ha −1 ) at Concord and Pierce and plant‐N uptake by 7% at Concord compared with broadcast UAN. The use of slow‐release fertilizers is a risk reduction strategy when weather is conductive to N losses; otherwise, they performed similarly to UAN.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 7
Claim · model-written summary
Band NF increased SPAD readings by 3% against broadcast UAN.
- Taxon
- corn
Zea mays subsp. mayst0 - Treatment
- Band NFe0
- Outcome
- SPAD readinge0
- Direction
- greatere0
- Value
- 3%e0
- Comparator
- broadcast UANe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Band NF had 3% greater SPAD reading and 47% greater stalk NO 3 –N compared with broadcast UAN across sites.”
t0“corn”
Claim · model-written summary
Band NF increased stalk nitrate by 47% against broadcast UAN.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- Band NFe0
- Outcome
- stalk NO 3 –Ne0
- Direction
- greatere0
- Value
- 47%e0
- Comparator
- broadcast UANe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Band NF had 3% greater SPAD reading and 47% greater stalk NO 3 –N compared with broadcast UAN across sites.”
t0“corn”
Claim · model-written summary
Broadcast PCU increased grain yield by 4 to 13% against UAN.
- Taxon
- CornZea mays subsp. mayse0
- Treatment
- broadcast PCUe0
- Outcome
- grain yielde0
- Direction
- greatere0
- Value
- 4 to 13% (0.5–1.8 Mg ha −1 )e0
- Comparator
- broadcast UANe0
- Setting
- Concord and HALe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Corn fertilized with broadcast PCU produced 4 to 13% (0.5–1.8 Mg ha −1 ) greater grain yield and 7% greater grain and plant‐N uptake at Concord and HAL compared with broadcast UAN.”
Claim · model-written summary
Broadcast PCU increased grain and plant N uptake by 7%.
- Taxon
- CornZea mays subsp. mayse0
- Treatment
- broadcast PCUe0
- Outcome
- grain and plant‐N uptakee0
- Direction
- greatere0
- Value
- 7%e0
- Comparator
- broadcast UANe0
- Setting
- Concord and HALe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Corn fertilized with broadcast PCU produced 4 to 13% (0.5–1.8 Mg ha −1 ) greater grain yield and 7% greater grain and plant‐N uptake at Concord and HAL compared with broadcast UAN.”
Claim · model-written summary
Band NF increased grain yield by 4% at Concord and Pierce.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- Band NFe0
- Outcome
- grain yielde0
- Direction
- increasede0
- Value
- 4% (0.6 Mg ha −1 )e0
- Comparator
- broadcast UANe0
- Setting
- Concord and Piercee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Band NF increased grain yield by 4% (0.6 Mg ha −1 ) at Concord and Pierce and plant‐N uptake by 7% at Concord compared with broadcast UAN.”
t0“corn”
Claim · model-written summary
Band NF increased plant N uptake by 7% at Concord.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- Band NFe0
- Outcome
- plant‐N uptakee0
- Direction
- increasede0
- Value
- 7%e0
- Comparator
- broadcast UANe0
- Setting
- Concorde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Band NF increased grain yield by 4% (0.6 Mg ha −1 ) at Concord and Pierce and plant‐N uptake by 7% at Concord compared with broadcast UAN.”
t0“corn”
Claim · model-written summary
Slow-release fertilizers are recommended to reduce N-loss risk in conducive weather.
- Taxon
- cornZea mays subsp. mayst0
- Outcome
- risk reduction strategye0
- Qualifier
- when weather is conductive to N lossese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The use of slow‐release fertilizers is a risk reduction strategy when weather is conductive to N losses; otherwise, they performed similarly to UAN.”
t0“corn”
The same questions in other papers
transplanting · yield · Zea mays (maize)Results differ
87 papers in the same direction as this paper · 35 in the opposite direction · 7 reporting no difference from an alternative
- positive
- positive
- no effect
126 papers more in this group
See all 130 papers →transplanting · nutrient: content · Zea mays (maize)Positive and negative results
14 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
13 papers more in this group
See all 17 papers →nitrogen · nutrient: content · Zea mays (maize)Positive and negative results
402 papers in the same direction as this paper · 83 in the opposite direction · 3 reporting no difference from an alternative
- positive
- positive
- positive
485 papers more in this group
See all 489 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
- no effect
- positive
- positive
2,181 papers more in this group
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.