Abstract
An experiment to evaluate the control of soybean cyst nematodes compared 1-year, 2-year, and 3-year nonhost rotations with continuous soybeans (Glycine max) in 0.2-ha plots. In a second 1-year rotation, the plots were planted to soybean or corn (Zea mays) after fumigation in the spring with a split application of 1,3-dichloropropene (748.2 liters/ha). The effects of the nematicide were apparent the first year. Soybean yield was 1,482 kg/ha compared to 233 kg/ha in the untreated plots. In the second year, the highest yielding plants (2,035 kg/ha) were those following 1 year of corn that had been treated the previous year; plants in untreated plots yielded 288 kg/ha. Average yield of soybean following 1 year of corn was 957 kg/ha compared to 288 kg/ha for continuous soybean. In the third year, the effects of the nematicide were still evident. Soybean plants in plots treated the first year, followed by corn, then soybean, yielded 1,044 kg/ha compared to 761 kg/ ha for soybean following 1 year of corn and 991 kg/ha for soybean following 2 years of corn. Plots planted to soybean for 3 consecutive years yielded 337 kg/ha. Nematicidal effects were no longer evident during the fourth year. Yields were most improved by the greatest number of years in the nonhost crop; highest yields in descending order were from plants following 3 years of corn, 2 years of corn, and 1 year of corn. Plots planted to soybean for 4 consecutive years yielded 130 kg/ha. Highly significant negative correlations occurred each year between initial nematode population densities and seed yield.
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Claims 10
Claim · model-written summary
Nematicide treated soybean yielded 1,482 kg/ha versus 233 kg/ha untreated in year one.
- Taxon
- soybean
Glycine maxt0 - Treatment
- nematicidet0
- Outcome
- Soybean yielde0
- Direction
- higherinferrede0
- Value
- 1,482 kg/hae0
- Qualifier
- 233 kg/hae0
- Comparator
- untreated plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean yield was 1,482 kg/ha compared to 233 kg/ha in the untreated plots.”
t0“Control of the soybean cyst nematode by crop rotation in combination with a nematicide.”
Claim · model-written summary
Second year yield after treated corn was 2,035 kg/ha versus 288 kg/ha untreated.
- Taxon
- soybeanGlycine maxt0
- Treatment
- following 1 year of corn that had been treated the previous yeare0
- Outcome
- yielding plantse0
- Direction
- higheste0
- Value
- 2,035 kg/hae0
- Qualifier
- 288 kg/hae0
- Comparator
- untreated plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the second year, the highest yielding plants (2,035 kg/ha) were those following 1 year of corn that had been treated the previous year; plants in untreated plots yielded 288 kg/ha.”
t0“Control of the soybean cyst nematode by crop rotation in combination with a nematicide.”
Claim · model-written summary
Soybean after one year of corn yielded 957 kg/ha versus 288 kg/ha continuously grown soybean.
- Taxon
- soybeanGlycine maxe0
- Treatment
- following 1 year of corne0
- Outcome
- Average yield of soybeane0
- Direction
- higherinferrede0
- Value
- 957 kg/hae0
- Qualifier
- 288 kg/hae0
- Comparator
- continuous soybeane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Average yield of soybean following 1 year of corn was 957 kg/ha compared to 288 kg/ha for continuous soybean.”
Claim · model-written summary
Third year soybean yield after treatment and corn was 1,044 kg/ha versus 761 kg/ ha after one year corn.
- Taxon
- soybeanGlycine maxe0
- Treatment
- plots treated the first year, followed by corn, then soybeane0
- Outcome
- yieldede0
- Direction
- higherinferrede0
- Value
- 1,044 kg/hae0
- Qualifier
- 761 kg/ hae0
- Comparator
- soybean following 1 year of corne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean plants in plots treated the first year, followed by corn, then soybean, yielded 1,044 kg/ha compared to 761 kg/ ha for soybean following 1 year of corn and 991 kg/ha for soybean following 2 years of corn.”
Claim · model-written summary
Third year soybean yield after two years corn was 991 kg/ha.
- Taxon
- soybeanGlycine maxt0
- Outcome
- soybean following 2 years of corne0
- Value
- 991 kg/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“991 kg/ha for soybean following 2 years of corn”
t0“Control of the soybean cyst nematode by crop rotation in combination with a nematicide.”
Claim · model-written summary
Three consecutive soybean years yielded 337 kg/ha.
- Taxon
- soybeanGlycine maxe0
- Outcome
- yieldede0
- Value
- 337 kg/hae0
- Qualifier
- 3 consecutive yearse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plots planted to soybean for 3 consecutive years yielded 337 kg/ha.”
Claim · model-written summary
Nematicidal effects were no longer evident in year four.
- Taxon
- soybeanGlycine maxt0
- Outcome
- Nematicidal effectse0
- Direction
- no longer evidente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nematicidal effects were no longer evident during the fourth year.”
t0“Control of the soybean cyst nematode by crop rotation in combination with a nematicide.”
Claim · model-written summary
Soybean yields increased with more years of nonhost corn.
- Taxon
- soybeanGlycine maxt0
- Treatment
- greatest number of years in the nonhost crope0
- Outcome
- Yieldse0
- Direction
- most improvede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yields were most improved by the greatest number of years in the nonhost crop; highest yields in descending order were from plants following 3 years of corn, 2 years of corn, and 1 year of corn.”
t0“Control of the soybean cyst nematode by crop rotation in combination with a nematicide.”
Claim · model-written summary
Four consecutive soybean years yielded 130 kg/ha.
- Taxon
- soybeanGlycine maxe0
- Outcome
- yieldede0
- Value
- 130 kg/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plots planted to soybean for 4 consecutive years yielded 130 kg/ha.”
Claim · model-written summary
Initial nematode population density was negatively correlated with seed yield each year.
- Taxon
- soybeanGlycine maxt0
- Outcome
- seed yielde0
- Direction
- negativee0
- Qualifier
- each yeare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Highly significant negative correlations occurred each year between initial nematode population densities and seed yield.”
t0“Control of the soybean cyst nematode by crop rotation in combination with a nematicide.”
The same questions in other papers
Zea mays subsp. mays · yield · Glycine max (soybean)Results differ
47 papers in the same direction as this paper · 20 in the opposite direction · 2 reporting no difference from an alternative
- negative
- no effect
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See all 70 papers →insecticide · yield · Glycine max (soybean)Results differ
38 papers in the same direction as this paper · 29 in the opposite direction
- no effect
- no effect
- no effect
64 papers more in this group
See all 68 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.