Abstract
Reduced tillage, including no‐till, and crop rotation are common practices for corn ( Zea mays L.) and soybean [ Glycine max (L.) Merr.] production in the Midwest. Benefits of no‐till vary with latitude and cropping system. This study was conducted to evaluate the influence of seasonal temperature and precipitation on the effects of primary tillage (plow, disk, chisel, subsoil, ridge‐till, and no‐till) and rotated and continuous corn and soybean production under rainfed conditions over 16 yr in southeastern Nebraska. Corn and soybean produced less grain with greater summer temperatures. Corn yield increased with less spring and more summer rainfall. Tillage and rotation practices affected corn grain yield; but only rotation affected soybean yield. Corn produced less grain with no‐till than with plow. The tillage × year interaction was significant for both crops; the yield advantage for plow was less during seasons with warmer springs. Soybean grain yield was less responsive to favorable environments with the chisel than other tillage treatments. Grain yield was greater with rotation than continuous cropping for both corn (7.10 vs. 5.83 Mg ha −1 ) and soybean (2.57 vs. 2.35 Mg ha −1 ). The benefit of rotation in terms of grain yield was greatest for corn during years with cool springs. The benefit of rotation for soybean grain yield did not vary with weather conditions. Seasonal temperature and rainfall patterns influenced the effects of tillage and rotation on corn yield. In contrast, for soybean, only the pattern of temperature influenced the effect of tillage on yield.
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Claims 9
Claim · model-written summary
Corn and soybean produced less grain under greater summer temperatures.
- Taxon
- Corn and soybean
Glycine max
Zea mays subsp. mayse1 - Treatment
- greater summer temperaturese1
- Outcome
- graine1
- Direction
- lesse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Corn and soybean produced less grain with greater summer temperatures”
Claim · model-written summary
Corn yield increased with less spring rainfall and more summer rainfall.
- Taxon
- CornZea mays subsp. mayse2
- Treatment
- less spring and more summer rainfalle2
- Outcome
- Corn yielde2
- Direction
- increasede2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Corn yield increased with less spring and more summer rainfall”
Claim · model-written summary
No-till produced less corn grain than plow tillage.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Corn produced less grain with no‐till than with plow”
Claim · model-written summary
Rotation increased corn grain yield relative to continuous corn (7.10 vs. 5.83 Mg ha −1).
- Taxon
- cornZea mays subsp. mayse5
- Treatment
- rotatione4
- Outcome
- Grain yielde4
- Direction
- greatere4
- Value
- 7.10 vs. 5.83 Mg ha −1e5
- Comparator
- continuous croppinge4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Grain yield was greater with rotation than continuous cropping”
e5“corn (7.10 vs. 5.83 Mg ha −1 )”
Claim · model-written summary
Rotation increased soybean grain yield relative to continuous soybean (2.57 vs. 2.35 Mg ha −1).
- Taxon
- soybeanGlycine maxe6
- Treatment
- rotatione4
- Outcome
- Grain yielde4
- Direction
- greatere4
- Value
- 2.57 vs. 2.35 Mg ha −1e6
- Comparator
- continuous croppinge4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Grain yield was greater with rotation than continuous cropping”
e6“soybean (2.57 vs. 2.35 Mg ha −1 )”
Claim · model-written summary
The benefit of rotation for corn grain yield was greatest in years with cool springs.
- Taxon
- cornZea mays subsp. mayse7
- Treatment
- cool springse7
- Outcome
- benefit of rotation in terms of grain yielde7
- Direction
- greateste7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“The benefit of rotation in terms of grain yield was greatest for corn during years with cool springs”
Claim · model-written summary
The tillage by year interaction on grain yield was significant for both crops.
- Taxon
- Corn and soybeanGlycine maxZea mays subsp. mayse1
- Treatment
- tillagee2
- Outcome
- tillage × year interactione2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Corn and soybean produced less grain with greater summer temperatures”
e2“The tillage × year interaction was significant for both crops”
Claim · model-written summary
Soybean grain yield was less responsive to favorable environments with the chisel than with other tillage treatments.
- Taxon
- SoybeanGlycine maxe1
- Treatment
- chisele1
- Outcome
- grain yielde1
- Direction
- lesse1
- Comparator
- other tillage treatmentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Soybean grain yield was less responsive to favorable environments with the chisel than other tillage treatments”
Claim · model-written summary
The benefit of rotation for soybean grain yield did not vary with weather conditions.
- Taxon
- soybeanGlycine maxe1
- Treatment
- weather conditionse1
- Outcome
- soybean grain yielde1
- Direction
- did not varye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The benefit of rotation for soybean grain yield did not vary with weather conditions”
The same questions in other papers
rotation · yield · Glycine max (soybean)Positive and negative results
106 papers in the same direction as this paper · 30 in the opposite direction · 7 reporting no difference from an alternative
- negative
- negative
- no effect
140 papers more in this group
See all 144 papers →rotation · yield · Zea mays (maize)Positive and negative results
253 papers in the same direction as this paper · 52 in the opposite direction · 16 reporting no difference from an alternative
- negative
- positive
- positive
318 papers more in this group
See all 322 papers →tillage · yield · Zea mays (maize)Positive and negative results
286 papers in the same direction as this paper · 812 in the opposite direction
- positive
- positive
- positive
1,095 papers more in this group
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.