Abstract
Strip‐till is an alternative conservation tillage system that may overcome the yield depression often seen with corn ( Zea mays L.) grown with no‐till on the claypan soils of the eastern Great Plains. The objective of this research was to determine the effect of conservation tillage systems and fertilizer N‐P management on short‐season corn. Continuous corn yields with no‐till, strip‐till in the fall, or strip‐till in the spring declined with year compared with corn grown with reduced tillage. By the third year, corn yields with reduced tillage exceeded 45 bu/acre more than with the other tillage systems. In part, this can be attributed to a reduced plant stand in no‐till and strip‐till systems. Average corn yield was about 10% greater when N‐P applications were made in the spring than in the fall. Similarly, knife (subsurface band) applications of N‐P resulted in about 12% greater yield than dribble (surface band). Yield differences due to fertilizer timing or placement were related to similar increases in the number of kernels per ear. Strip‐till done either in the fall or spring for corn grown in claypan soil did not improve yield compared with no‐till and may be less than yields with reduced tillage. Knife applications of N‐P fertilizer done in the spring may help mitigate this deficit if the producer prefers the conservation aspects of strip‐ or no‐till systems.
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Claims 7
Claim · model-written summary
Continuous corn yield declined over years under no-till and fall or spring strip-till relative to reduced tillage.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- no‐till, strip‐till in the fall, or strip‐till in the springe0
- Outcome
- corn yieldse0
- Direction
- declinede0
- Comparator
- reduced tillagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Continuous corn yields with no‐till, strip‐till in the fall, or strip‐till in the spring declined with year compared with corn grown with reduced tillage.”
Claim · model-written summary
By year three, reduced-tillage corn yielded more than 45 bu/acre above the other tillage systems.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- reduced tillagee0
- Outcome
- corn yieldse0
- Direction
- exceedede0
- Value
- 45 bu/acree0
- Comparator
- other tillage systemse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“By the third year, corn yields with reduced tillage exceeded 45 bu/acre more than with the other tillage systems.”
Claim · model-written summary
No-till and strip-till had reduced corn plant stands.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- no‐till and strip‐tille0
- Outcome
- plant stande0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a reduced plant stand in no‐till and strip‐till systems”
t0“Corn”
Claim · model-written summary
Spring N-P application yielded about 10% more corn than fall application.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- N‐P applications were made in the springe0
- Outcome
- corn yielde0
- Direction
- greatere0
- Value
- 10%e0
- Comparator
- in the falle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Average corn yield was about 10% greater when N‐P applications were made in the spring than in the fall.”
Claim · model-written summary
Knife N-P placement produced about 12% more corn yield than dribble placement.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- knife (subsurface band) applications of N‐Pe0
- Outcome
- yielde0
- Direction
- greatere0
- Value
- 12%e0
- Comparator
- dribble (surface band)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“knife (subsurface band) applications of N‐P resulted in about 12% greater yield than dribble (surface band).”
t0“Corn”
Claim · model-written summary
Fertilizer timing or placement yield differences tracked similar increases in kernels per ear.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- fertilizer timing or placemente0
- Outcome
- number of kernels per eare0
- Direction
- increasese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield differences due to fertilizer timing or placement were related to similar increases in the number of kernels per ear.”
t0“Corn”
Claim · model-written summary
The authors recommend spring knife application of N-P to mitigate conservation-tillage yield deficits.
- Taxon
- CornZea mays subsp. mayst0
- Outcome
- Knife applications of N‐P fertilizer done in the springe0
- Qualifier
- if the producer prefers the conservation aspects of strip‐ or no‐till systemse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Knife applications of N‐P fertilizer done in the spring may help mitigate this deficit if the producer prefers the conservation aspects of strip‐ or no‐till systems.”
t0“Corn”
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tillage · growth · Zea mays (maize)Positive and negative results
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- no effect
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811 papers in the same direction as this paper · 230 in the opposite direction · 57 reporting no difference from an alternative
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See all 1,099 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.