Abstract
The effects of using a rye cover crop on seedcorn maggot, Delia platura (Meigen), populations in soybeans were studied for 2 years in Ohio. Populations of seedcorn maggots increased when the cover crop was turned into the soil, either by plowing and disking or by plowing alone. Spraying rye with paraquat before disking did not increase populations as much as when paraquat was not used. No increases were observed when the cover crop remained above ground, or when the rye was not present. Plant stand reductions usually resulted from seedcorn maggot population increases. Seedcorn maggot development within the field took ca. 408 thermal units (as measured by centigrade degree-days) from the time of disking to peak population emergence. Ramifications of using different cover crop management systems with regard to seedcorn maggots are discussed.
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Claims 6
Claim · model-written summary
Turning the rye cover crop into the soil increased seedcorn maggot populations in soybeans compared with leaving it above ground.
- Taxon
- soybeans
Glycine maxt0 - Treatment
- the cover crop was turned into the soil, either by plowing and disking or by plowing alonee1
- Interactor
- seedcorn maggote1pest
- Outcome
- populations of seedcorn maggotse1
- Direction
- increasede1
- Comparator
- when the cover crop remained above grounde3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Populations of seedcorn maggots increased when the cover crop was turned into the soil, either by plowing and disking or by plowing alone”
e3“No increases were observed when the cover crop remained above ground, or when the rye was not present”
t0“Populations in Soybeans”
Claim · model-written summary
Spraying rye with paraquat before disking did not increase seedcorn maggot populations as much as disking without paraquat.
- Taxon
- soybeansGlycine maxt0
- Treatment
- Spraying rye with paraquat before diskinge2
- Interactor
- seedcorn maggote1pest
- Outcome
- populationse2
- Direction
- did not increasee2
- Comparator
- when paraquat was not usede2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Spraying rye with paraquat before disking did not increase populations as much as when paraquat was not used”
e1“Populations of seedcorn maggots increased when the cover crop was turned into the soil, either by plowing and disking or by plowing alone”
t0“Populations in Soybeans”
Claim · model-written summary
Seedcorn maggot population increases were not observed when the rye cover crop remained above ground.
- Taxon
- soybeansGlycine maxt0
- Treatment
- the cover crop remained above grounde3
- Interactor
- seedcorn maggote1pest
- Outcome
- populations of seedcorn maggotse1
- Direction
- No increasese3
- Comparator
- the cover crop was turned into the soile1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“No increases were observed when the cover crop remained above ground, or when the rye was not present”
e1“Populations of seedcorn maggots increased when the cover crop was turned into the soil, either by plowing and disking or by plowing alone”
t0“Populations in Soybeans”
Claim · model-written summary
Seedcorn maggot population increases were not observed in soybean plots without rye.
- Taxon
- soybeansGlycine maxt0
- Treatment
- the rye was not presente3
- Interactor
- seedcorn maggote1pest
- Outcome
- populations of seedcorn maggotse1
- Direction
- No increasese3
- Comparator
- the cover crop was turned into the soile1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“No increases were observed when the cover crop remained above ground, or when the rye was not present”
e1“Populations of seedcorn maggots increased when the cover crop was turned into the soil, either by plowing and disking or by plowing alone”
t0“Populations in Soybeans”
Claim · model-written summary
Plant stand reductions in soybeans were usually associated with seedcorn maggot population increases.
- Taxon
- soybeansGlycine maxt0
- Interactor
- seedcorn maggote4pest
- Outcome
- Plant stande4
- Direction
- reductionse4
- Qualifier
- usuallye4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Plant stand reductions usually resulted from seedcorn maggot population increases”
t0“Populations in Soybeans”
Claim · model-written summary
Seedcorn maggot development within the field took about 408 thermal units from disking to peak population emergence.
- Taxon
- soybeansGlycine maxt0
- Interactor
- Seedcorn maggote5pest
- Outcome
- Seedcorn maggot development within the fielde5
- Value
- ca. 408 thermal unitse5
- Qualifier
- from the time of disking to peak population emergencee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Seedcorn maggot development within the field took ca. 408 thermal units (as measured by centigrade degree-days) from the time of disking to peak population emergence”
t0“Populations in Soybeans”
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