Abstract
Abstract Crop rotations alter the soil environment and physiology of the subsequent crop in ways that may affect the abundance of herbivores and their natural enemies. Soybean aphids are a consistent pest of soybean throughout North America, but little work has focused on how preceding crops may affect pest–predator dynamics. In a replicated experiment over three years, we examined how two preceding crops (spring wheat or an oat/pea mixture) affected seasonal soybean aphid pressure and the ratio of aphids to their predator community. Peak aphid populations were reduced by 40% and 75% in years 1 and 2 by planting spring wheat before soybeans (relative to the oat–pea mixture). Aphid densities were unaffected by preceding crop in the third year of study (aphids were at threshold in this year). Predators responded positively to aphid population increases and were unaffected by preceding crops. Additional research on how crop rotations can be used as a tool to manage soybean aphids warrants further attention.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 5
Claim · model-written summary
Planting spring wheat before soybeans reduced peak aphid populations by 40% in year 1 relative to an oat–pea mixture.
- Taxon
- soybeans
Glycine maxe1 - Treatment
- planting spring wheat before soybeanse1
- Interactor
- Soybean aphids
.jpg?width=60)
Aphis glycinese0pest - Outcome
- Peak aphid populationse1
- Direction
- reducede1
- Value
- 40%e1
- Comparator
- oat–pea mixturee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Soybean aphids are a consistent pest of soybean throughout North America”
e1“Peak aphid populations were reduced by 40% and 75% in years 1 and 2 by planting spring wheat before soybeans (relative to the oat–pea mixture)”
Claim · model-written summary
Planting spring wheat before soybeans reduced peak aphid populations by 75% in year 2 relative to an oat–pea mixture.
- Taxon
- soybeansGlycine maxe1
- Treatment
- planting spring wheat before soybeanse1
- Interactor
- Soybean aphidsAphis glycinese0pest
- Outcome
- Peak aphid populationse1
- Direction
- reducede1
- Value
- 75%e1
- Comparator
- oat–pea mixturee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean aphids are a consistent pest of soybean throughout North America”
e1“Peak aphid populations were reduced by 40% and 75% in years 1 and 2 by planting spring wheat before soybeans (relative to the oat–pea mixture)”
Claim · model-written summary
Aphid densities were unaffected by preceding crop in the third year.
- Taxon
- soybeanGlycine maxe0
- Treatment
- preceding crope2
- Interactor
- Soybean aphidsAphis glycinese0pest
- Outcome
- Aphid densitiese2
- Direction
- unaffectede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean aphids are a consistent pest of soybean throughout North America”
e2“Aphid densities were unaffected by preceding crop in the third year of study”
Claim · model-written summary
Predators responded positively to increases in aphid populations in soybean.
- Taxon
- soybeanGlycine maxe0
- Interactor
- Predatorse3biocontrol_agent
- Second interactor
- aphide3pest
- Outcome
- Predatorse3
- Direction
- responded positivelye3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean aphids are a consistent pest of soybean throughout North America”
e3“Predators responded positively to aphid population increases”
Claim · model-written summary
Predators were unaffected by preceding crops.
- Taxon
- soybeanGlycine maxe0
- Treatment
- preceding cropse4
- Interactor
- Predatorse4biocontrol_agent
- Outcome
- Predatorse4
- Direction
- unaffectede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean aphids are a consistent pest of soybean throughout North America”
e4“Predators responded positively to aphid population increases and were unaffected by preceding crops”
The same questions in other papers
rotation · ecology: diversity · Glycine max (soybean)Results agree
3 papers in the same direction as this paper
- negative
- no effect
- no effect
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.