Abstract
Rotation effects on corn ( Zea mays L.) growth have not been documented. Our objective was to evaluate dry matter (DM) and N accumulation of corn following corn, soybean [ Glycine max (L.)Merr.], or wheat/red clover ( Triticum aestivum L./ Trifolium pratense L.) using moldboard plow, chisel, and ridge tillage under high (broadcast herbicides and 163 kg N ha −1 ) and low chemical management (banded herbicides and 95 kg N ha −1 ). In 1993, corn following soybean, compared with corn under high chemical management, had greater DM and N accumulation during vegetative development but similar N accumulation after silking (45 kg ha −1 ) and yield (7.6 and 7.2 Mg ha −1 , respectively). In 1994, corn following soybean, compared with corn under high chemical management, had similar DM and N accumulation during vegetative development, but greater N accumulation (59 and 35 kg ha −1 , respectively) after silking and yield (11.4 and 10.7 Mg ha −1 ). Corn following wheat/clover under both management systems, compared with corn following corn under high chemical management, had greater DM and N accumulation during vegetative development in 1994. Corn following wheat/clover under high chemical management had the greatest N accumulation after silking (79 kg ha −1 ) and yield (12.0 Mg ha −1 ), whereas the other two systems had the same N accumulation after silking and yield. Corn yield had linear responses to N accumulation after silking in 1993 ( r 2 = 0.47) and 1994 ( r 2 = 0.87). We conclude that N accumulation after silking influenced the yield response to rotation more than DM and N accumulation during vegetative development did.
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Claims 12
Claim · model-written summary
In 1993, corn after soybean had greater vegetative dry matter accumulation than corn under high chemical management.
- Taxon
- corn
Zea mays subsp. mayse0 - Organ / stage
- vegetative developmente0
- Treatment
- following soybeane0
- Outcome
- DMe0
- Direction
- greatere0
- Comparator
- corn under high chemical managemente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 1993, corn following soybean, compared with corn under high chemical management, had greater DM and N accumulation during vegetative development but similar N accumulation after silking (45 kg ha −1 ) and yield (7.6 and 7.2 Mg ha −1 , respectively).”
Claim · model-written summary
In 1993, corn after soybean had greater vegetative nitrogen accumulation.
- Taxon
- cornZea mays subsp. mayse0
- Organ / stage
- vegetative developmente0
- Treatment
- following soybeane0
- Outcome
- N accumulatione0
- Direction
- greatere0
- Comparator
- corn under high chemical managemente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 1993, corn following soybean, compared with corn under high chemical management, had greater DM and N accumulation during vegetative development but similar N accumulation after silking (45 kg ha −1 ) and yield (7.6 and 7.2 Mg ha −1 , respectively).”
Claim · model-written summary
In 1993, post-silking nitrogen accumulation was similar between corn after soybean and high chemical management.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- following soybeane0
- Outcome
- N accumulation after silkinge0
- Direction
- similare0
- Value
- 45 kg ha −1e0
- Comparator
- corn under high chemical managemente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 1993, corn following soybean, compared with corn under high chemical management, had greater DM and N accumulation during vegetative development but similar N accumulation after silking (45 kg ha −1 ) and yield (7.6 and 7.2 Mg ha −1 , respectively).”
Claim · model-written summary
In 1993, yield was similar at 7.6 and 7.2 Mg ha −1.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- following soybeane0
- Outcome
- yielde0
- Direction
- similare0
- Value
- 7.6 and 7.2 Mg ha −1e0
- Comparator
- corn under high chemical managemente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 1993, corn following soybean, compared with corn under high chemical management, had greater DM and N accumulation during vegetative development but similar N accumulation after silking (45 kg ha −1 ) and yield (7.6 and 7.2 Mg ha −1 , respectively).”
Claim · model-written summary
In 1994, vegetative dry matter and nitrogen accumulation were similar for corn after soybean and high chemical management.
- Taxon
- cornZea mays subsp. mayse0
- Organ / stage
- vegetative developmente0
- Treatment
- following soybeane0
- Outcome
- DM and N accumulatione0
- Direction
- similare0
- Comparator
- corn under high chemical managemente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 1994, corn following soybean, compared with corn under high chemical management, had similar DM and N accumulation during vegetative development, but greater N accumulation (59 and 35 kg ha −1 , respectively) after silking and yield (11.4 and 10.7 Mg ha −1 ).”
Claim · model-written summary
In 1994, post-silking nitrogen accumulation was greater after soybean, 59 versus 35 kg ha −1.
- Taxon
- cornZea mays subsp. mayse0
- Organ / stage
- after silkinge0
- Treatment
- following soybeane0
- Outcome
- N accumulatione0
- Direction
- greatere0
- Value
- 59 and 35 kg ha −1e0
- Comparator
- corn under high chemical managemente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 1994, corn following soybean, compared with corn under high chemical management, had similar DM and N accumulation during vegetative development, but greater N accumulation (59 and 35 kg ha −1 , respectively) after silking and yield (11.4 and 10.7 Mg ha −1 ).”
Claim · model-written summary
In 1994, yield was greater after soybean, 11.4 versus 10.7 Mg ha −1.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- following soybeane0
- Outcome
- yielde0
- Direction
- greatere0
- Value
- 11.4 and 10.7 Mg ha −1e0
- Comparator
- corn under high chemical managemente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 1994, corn following soybean, compared with corn under high chemical management, had similar DM and N accumulation during vegetative development, but greater N accumulation (59 and 35 kg ha −1 , respectively) after silking and yield (11.4 and 10.7 Mg ha −1 ).”
Claim · model-written summary
In 1994, wheat/clover rotation increased vegetative dry matter and nitrogen accumulation relative to corn after corn under high management.
- Taxon
- CornZea mays subsp. mayse0
- Treatment
- following wheat/clover under both management systemse0
- Outcome
- DM and N accumulatione0
- Direction
- greatere0
- Comparator
- corn following corn under high chemical managemente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Corn following wheat/clover under both management systems, compared with corn following corn under high chemical management, had greater DM and N accumulation during vegetative development in 1994.”
Claim · model-written summary
Wheat/clover rotation under high chemical management had the greatest post-silking nitrogen accumulation, 79 kg ha −1.
- Taxon
- CornZea mays subsp. mayse0
- Treatment
- following wheat/clover under high chemical managemente0
- Outcome
- N accumulation after silkinge0
- Direction
- greateste0
- Value
- 79 kg ha −1e0
- Comparator
- the other two systemse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Corn following wheat/clover under high chemical management had the greatest N accumulation after silking (79 kg ha −1 ) and yield (12.0 Mg ha −1 ), whereas the other two systems had the same N accumulation after silking and yield.”
Claim · model-written summary
Wheat/clover rotation under high chemical management had the greatest yield, 12.0 Mg ha −1.
- Taxon
- CornZea mays subsp. mayse0
- Treatment
- following wheat/clover under high chemical managemente0
- Outcome
- yielde0
- Direction
- greateste0
- Value
- 12.0 Mg ha −1e0
- Comparator
- the other two systemse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Corn following wheat/clover under high chemical management had the greatest N accumulation after silking (79 kg ha −1 ) and yield (12.0 Mg ha −1 ), whereas the other two systems had the same N accumulation after silking and yield.”
Claim · model-written summary
Corn yield rose linearly with post-silking nitrogen accumulation in both years.
- Taxon
- CornZea mays subsp. mayse0
- Organ / stage
- after silkinge0
- Outcome
- yielde0
- Direction
- linear responsese0
- Qualifier
- N accumulation after silkinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Corn yield had linear responses to N accumulation after silking in 1993 ( r 2 = 0.47) and 1994 ( r 2 = 0.87).”
Claim · model-written summary
The authors conclude post-silking nitrogen accumulation influenced rotation yield response more than vegetative accumulation.
- Taxon
- CornZea mays subsp. mayst0
- Outcome
- yield response to rotatione0
- Qualifier
- N accumulation after silkinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We conclude that N accumulation after silking influenced the yield response to rotation more than DM and N accumulation during vegetative development did.”
t0“Corn”
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