Abstract
Soybean [ Glycine max (L.) Merr.] benefits in yield when rotated with corn ( Zea mays L.), but the mechanism of the rotation effect is not fully understood. The objective of this study was to determine effects of cropping sequence and tillage on soybean growth and plant development. A 2‐yr field study was conducted using conventional tillage and no‐tillage systems in seven different corn and soybean rotation sequences. At physiological maturity, plots of first‐year soybean after 5 yr of consecutive corn and the annually rotated soybean averaged 8% higher soil moisture content and 17% more dry matter per plant than the remaining five rotation sequences. Conventional tillage averaged 6% higher soil moisture content and 5% greater leaf area index than the no‐tillage system. In 2000, leaf area index was 29% higher for the first‐year soybean after 5‐yr corn and the annually rotated soybean than the remaining five rotation sequences. No differences in leaf area index were observed among the different rotation sequences in 2001. Soybean plants were 6% taller in first‐year soybean after 5‐yr corn, second‐year soybean, and annually rotated soybean than the remaining four rotation sequences. The no‐tillage system averaged 6% more dry matter plant per plant and 7% taller plants than the conventional tillage system. These findings support the hypothesis that growth and alterations in plant development occur when soybean is grown in different rotation sequences and tillage systems. These alterations may reflect the plant response to the corn–soybean rotation effect on soybean growth and development, but the underlying mechanism of the effect remains unknown.
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Claims 9
Claim · model-written summary
Annually rotated soybean and first-year soybean after 5 yr of corn averaged 8% higher soil moisture content than the remaining five rotation sequences.
- Taxon
- Soybean
Glycine maxe0 - Treatment
- annually rotated soybeane2
- Outcome
- soil moisture contente2
- Direction
- highere2
- Value
- 8%e2
- Comparator
- the remaining five rotation sequencese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean [ Glycine max (L.) Merr.] benefits in yield when rotated with corn”
e2“the annually rotated soybean averaged 8% higher soil moisture content and 17% more dry matter per plant than the remaining five rotation sequences”
Claim · model-written summary
Annually rotated soybean had 17% more dry matter per plant than the remaining five rotation sequences.
- Taxon
- SoybeanGlycine maxe0
- Treatment
- annually rotated soybeane2
- Outcome
- dry matter per plante2
- Direction
- moree2
- Value
- 17%e2
- Comparator
- the remaining five rotation sequencese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean [ Glycine max (L.) Merr.] benefits in yield when rotated with corn”
e2“the annually rotated soybean averaged 8% higher soil moisture content and 17% more dry matter per plant than the remaining five rotation sequences”
Claim · model-written summary
Conventional tillage averaged 6% higher soil moisture content than no-tillage.
- Taxon
- SoybeanGlycine maxe0
- Treatment
- Conventional tillagee3
- Outcome
- soil moisture contente3
- Direction
- highere3
- Value
- 6%e3
- Comparator
- no‐tillage systeme3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean [ Glycine max (L.) Merr.] benefits in yield when rotated with corn”
e3“Conventional tillage averaged 6% higher soil moisture content and 5% greater leaf area index than the no‐tillage system”
Claim · model-written summary
Conventional tillage had 5% greater leaf area index than no-tillage.
- Taxon
- SoybeanGlycine maxe0
- Treatment
- Conventional tillagee3
- Outcome
- leaf area indexe3
- Direction
- greatere3
- Value
- 5%e3
- Comparator
- no‐tillage systeme3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean [ Glycine max (L.) Merr.] benefits in yield when rotated with corn”
e3“Conventional tillage averaged 6% higher soil moisture content and 5% greater leaf area index than the no‐tillage system”
Claim · model-written summary
In 2000, leaf area index was 29% higher for first-year soybean after 5-yr corn and annually rotated soybean than the remaining five rotation sequences.
- Taxon
- SoybeanGlycine maxe0
- Treatment
- annually rotated soybeane4
- Outcome
- leaf area indexe4
- Direction
- highere4
- Value
- 29%e4
- Qualifier
- In 2000e4
- Comparator
- the remaining five rotation sequencese4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean [ Glycine max (L.) Merr.] benefits in yield when rotated with corn”
e4“In 2000, leaf area index was 29% higher for the first‐year soybean after 5‐yr corn and the annually rotated soybean than the remaining five rotation sequences”
Claim · model-written summary
Soybean plants were 6% taller in first-year soybean after 5-yr corn, second-year soybean and annually rotated soybean than in the remaining four rotation sequences.
- Taxon
- SoybeanGlycine maxe0
- Treatment
- annually rotated soybeane5
- Outcome
- plantse5
- Direction
- tallere5
- Value
- 6%e5
- Comparator
- the remaining four rotation sequencese5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean [ Glycine max (L.) Merr.] benefits in yield when rotated with corn”
e5“Soybean plants were 6% taller in first‐year soybean after 5‐yr corn, second‐year soybean, and annually rotated soybean than the remaining four rotation sequences”
Claim · model-written summary
No-tillage averaged 6% more dry matter per plant than conventional tillage.
- Taxon
- SoybeanGlycine maxe0
- Treatment
- The no‐tillage systeme6
- Outcome
- dry matter plant per plante6
- Direction
- moree6
- Value
- 6%e6
- Comparator
- the conventional tillage systeme6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean [ Glycine max (L.) Merr.] benefits in yield when rotated with corn”
e6“The no‐tillage system averaged 6% more dry matter plant per plant and 7% taller plants than the conventional tillage system”
Claim · model-written summary
No-tillage plants were 7% taller than conventional tillage plants.
- Taxon
- SoybeanGlycine maxe0
- Treatment
- The no‐tillage systeme6
- Outcome
- plantse6
- Direction
- tallere6
- Value
- 7%e6
- Comparator
- the conventional tillage systeme6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean [ Glycine max (L.) Merr.] benefits in yield when rotated with corn”
e6“The no‐tillage system averaged 6% more dry matter plant per plant and 7% taller plants than the conventional tillage system”
Claim · model-written summary
No differences in leaf area index were observed among rotation sequences in 2001.
- Taxon
- SoybeanGlycine maxe0
- Treatment
- rotation sequencese7
- Outcome
- leaf area indexe7
- Direction
- No differencese7
- Qualifier
- in 2001e7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean [ Glycine max (L.) Merr.] benefits in yield when rotated with corn”
e7“No differences in leaf area index were observed among the different rotation sequences in 2001”
The same questions in other papers
tillage · growth · Glycine max (soybean)Results differ
51 papers in the same direction as this paper · 28 in the opposite direction · 4 reporting no difference from an alternative
- negative
- positive
- negative
80 papers more in this group
See all 84 papers →rotation · growth · Glycine max (soybean)Positive and negative results
11 papers in the same direction as this paper · 6 in the opposite direction
- negative
- negative
- no effect
14 papers more in this group
See all 18 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.