Abstract
Abstract Increasing silage production and quality is paramount for dairy and beef feedlot production. We aimed to (a) increase dry matter, protein production, and profit per acre of corn ( Zea mays L.) by intercropping it with soybean [ Glycine max (L.) Merr.]; (b) compare soybean maturity groups (MGs) intercropped or grown as the sole crop; and (c) quantify the soybean planting rate's influence on land equivalent ratios (LER), total dry matter yield, nutrient concentration and economic return per acre in corn–soybean intercropping systems. A 2‐yr field study was conducted with two soybean MGs (MG1 and MG7) and four soybean planting rates: 0 (control), 38,000 (1×), 76,000 (2×), and 152,000 (4×) seeds acre −1 . Intercropping with MG7 increased soybean dry weight by 33% compared with MG1. The MG7 4× rate in 2012 and the 1× and 2× rates in 2013 maximized yield and LER when forage contained 7 to 10% soybean. Averaged over years, the MG7 soybean planting rate had a significant quadratic influence on nutrient value, peaking at the 2× rate at $23 ton –1 more than monoculture corn. Intercropping with the 2× MG7 soybean increased the net economic return per acre on a nutrient value basis by $238 acre −1 . The soybean concentration in the mix that produced the highest total dry matter yield 5 and 7% and 7 and 10% for gross economic return per acre in 2012 and 2013, respectively. On a tonnage only basis, intercropping 2× MG7 soybean increased yield and produced $26 acre −1 more profit than monoculture corn.
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Claims 10
Claim · model-written summary
MG7 increased soybean dry weight by 33% relative to MG1.
- Taxon
- soybean
Glycine maxe0 - Treatment
- MG7e0
- Outcome
- soybean dry weighte0
- Direction
- increasede0
- Value
- 33%e0
- Comparator
- MG1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Intercropping with MG7 increased soybean dry weight by 33% compared with MG1.”
Claim · model-written summary
MG7 at 4× in 2012 maximized yield and land equivalent ratio with 7 to 10% soybean forage.
- Taxon
- soybeanGlycine maxe0
- Treatment
- MG7 4× ratee0
- Outcome
- yield and LERe0
- Direction
- maximizede0
- Value
- 7 to 10%e0
- Qualifier
- 2012e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The MG7 4× rate in 2012 and the 1× and 2× rates in 2013 maximized yield and LER when forage contained 7 to 10% soybean.”
Claim · model-written summary
MG7 at 1× in 2013 maximized yield and land equivalent ratio.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The MG7 4× rate in 2012 and the 1× and 2× rates in 2013 maximized yield and LER when forage contained 7 to 10% soybean.”
Claim · model-written summary
MG7 at 2× in 2013 maximized yield and land equivalent ratio.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The MG7 4× rate in 2012 and the 1× and 2× rates in 2013 maximized yield and LER when forage contained 7 to 10% soybean.”
Claim · model-written summary
MG7 planting rate had a significant quadratic influence on nutrient value, peaking at 2× and $23 ton –1 above monoculture corn.
- Taxon
- soybeanGlycine maxe0
- Treatment
- MG7 soybean planting ratee0
- Outcome
- nutrient valuee0
- Direction
- peakinge0
- Value
- $23 ton –1e0
- Comparator
- monoculture corne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Averaged over years, the MG7 soybean planting rate had a significant quadratic influence on nutrient value, peaking at the 2× rate at $23 ton –1 more than monoculture corn.”
Claim · model-written summary
Intercropping 2× MG7 increased nutrient-value-based net return by $238 acre −1.
- Taxon
- soybeanGlycine maxe0
- Treatment
- 2× MG7 soybeane0
- Outcome
- net economic return per acree0
- Direction
- increasede0
- Value
- $238 acre −1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Intercropping with the 2× MG7 soybean increased the net economic return per acre on a nutrient value basis by $238 acre −1 .”
Claim · model-written summary
Highest total dry matter yield occurred at 5 and 7% soybean concentration in 2012 and 2013.
- Taxon
- soybeanGlycine maxe0
- Outcome
- highest total dry matter yielde0
- Value
- 5 and 7%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The soybean concentration in the mix that produced the highest total dry matter yield 5 and 7% and 7 and 10% for gross economic return per acre in 2012 and 2013, respectively.”
Claim · model-written summary
Highest gross economic return occurred at 7 and 10% soybean concentration in 2012 and 2013.
- Taxon
- soybeanGlycine maxe0
- Outcome
- gross economic return per acree0
- Value
- 7 and 10%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The soybean concentration in the mix that produced the highest total dry matter yield 5 and 7% and 7 and 10% for gross economic return per acre in 2012 and 2013, respectively.”
Claim · model-written summary
On tonnage alone, 2× MG7 intercropping increased yield.
- Taxon
- soybeanGlycine maxe0
- Treatment
- intercropping 2× MG7 soybeane0
- Outcome
- yielde0
- Direction
- increasede0
- Comparator
- monoculture corne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On a tonnage only basis, intercropping 2× MG7 soybean increased yield and produced $26 acre −1 more profit than monoculture corn.”
Claim · model-written summary
On tonnage alone, 2× MG7 intercropping produced $26 acre −1 more profit than monoculture corn.
- Taxon
- soybeanGlycine maxe0
- Treatment
- intercropping 2× MG7 soybeane0
- Outcome
- profite0
- Direction
- moree0
- Value
- $26 acre −1e0
- Comparator
- monoculture corne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On a tonnage only basis, intercropping 2× MG7 soybean increased yield and produced $26 acre −1 more profit than monoculture corn.”
The same questions in other papers
intercropping · yield · Glycine max (soybean)Positive and negative results
130 papers in the same direction as this paper · 79 in the opposite direction · 8 reporting no difference from an alternative
- negative
- negative
- negative
214 papers more in this group
See all 218 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.