Abstract
Conservation tillage has been increasingly used in the midwestern USA. Long‐term effects of tillage practices on the soybean [ Glycine max (L.) Merr.] cyst nematode (SCN), Heterodera glycines , and soybean yields in corn–soybean rotation were studied in two fields in Minnesota (USA). The experiments were arranged in a split‐plot design with tillage treatments as main plots and crop sequences as subplots. Tillage treatments were no‐tillage (NT) and conventional tillage (CT). The crop sequences were six (Waseca) or nine (New Richland) combinations of SCN‐susceptible ‘Sturdy’, SCN‐resistant ‘Freeborn’ (‘PI 88788’ resistance source) and ‘Pioneer brand 9234’ (‘Peking’ resistance source) soybean rotated annually with corn. Tillage did not affect SCN population density at New Richland and had only minimal and inconsistent effects on SCN at Waseca. However, CT resulted in up to 370 kg ha −1 greater soybean yield than NT at Waseca. Growing SCN‐resistant cultivars was effective in the corn–soybean rotation for managing SCN and minimizing yield loss to SCN. Resistant soybean not only reduced SCN population density and increased soybean yield in the year when it was grown, but also resulted in a smaller inoculum population density and increased yield of susceptible and resistant soybean in the following soybean years. Pioneer brand 9234 was more effective than Freeborn in reducing SCN population density and increasing soybean yield in the following years. This study confirmed that use of resistant cultivars is an effective tactic for SCN management, but tillage is not an option solely for managing SCN population in the northern climate and soil conditions.
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Claims 11
Claim · model-written summary
Tillage did not affect soybean cyst nematode density at New Richland.
- Taxon
- soybean
Glycine maxe1 - Treatment
- Tillagee0
- Interactor
- Heterodera glycines
Heterodera glycinese1pest - Outcome
- SCN population densitye0
- Direction
- did not affecte0
- Setting
- New Richlande0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tillage did not affect SCN population density at New Richland”
e1“soybean [ Glycine max (L.) Merr.] cyst nematode (SCN), Heterodera glycines”
Claim · model-written summary
Tillage had minimal and inconsistent effects on soybean cyst nematodes at Waseca.
- Taxon
- soybeanGlycine maxe1
- Treatment
- Tillagee2
- Interactor
- Heterodera glycinesHeterodera glycinese1pest
- Outcome
- SCNe0
- Setting
- Wasecae0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“had only minimal and inconsistent effects on SCN at Waseca”
e1“soybean [ Glycine max (L.) Merr.] cyst nematode (SCN), Heterodera glycines”
e2“Tillage did not affect SCN”
Claim · model-written summary
Conventional tillage increased soybean yield by up to 370 kg ha −1 relative to no tillage at Waseca.
- Taxon
- soybeanGlycine maxe2
- Treatment
- conventional tillagee1
- Outcome
- soybean yielde0
- Direction
- greatere0
- Value
- 370 kg ha −1e0
- Comparator
- no‐tillagee1
- Setting
- Wasecae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CT resulted in up to 370 kg ha −1 greater soybean yield than NT at Waseca.”
e1“Tillage treatments were no‐tillage (NT) and conventional tillage (CT).”
e2“soybean [ Glycine max (L.) Merr.]”
Claim · model-written summary
Growing resistant soybean reduced soybean cyst nematode population density in the same year.
- Taxon
- soybeanGlycine maxe0
- Treatment
- Resistant soybeane0
- Interactor
- Heterodera glycinesHeterodera glycinese1pest
- Outcome
- SCN population densitye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Resistant soybean not only reduced SCN population density and increased soybean yield in the year when it was grown”
e1“soybean [ Glycine max (L.) Merr.] cyst nematode (SCN), Heterodera glycines”
Claim · model-written summary
Growing resistant soybean increased soybean yield in the same year.
- Taxon
- soybeanGlycine maxe0
- Treatment
- Resistant soybeane0
- Outcome
- soybean yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Resistant soybean not only reduced SCN population density and increased soybean yield in the year when it was grown”
Claim · model-written summary
Growing resistant soybean reduced nematode inoculum density in subsequent soybean years.
- Taxon
- soybeanGlycine maxe1
- Treatment
- Resistant soybeane1
- Interactor
- Heterodera glycinesHeterodera glycinese2pest
- Outcome
- inoculum population densitye0
- Direction
- smallere0
- Qualifier
- following soybean yearse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“resulted in a smaller inoculum population density and increased yield of susceptible and resistant soybean in the following soybean years.”
e1“Resistant soybean not only reduced SCN population density”
e2“soybean [ Glycine max (L.) Merr.] cyst nematode (SCN), Heterodera glycines”
Claim · model-written summary
Growing resistant soybean increased yield of susceptible and resistant soybean in following soybean years.
- Taxon
- soybeanGlycine maxe0
- Treatment
- Resistant soybeane1
- Outcome
- yield of susceptible and resistant soybeane0
- Direction
- increasede0
- Qualifier
- following soybean yearse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“resulted in a smaller inoculum population density and increased yield of susceptible and resistant soybean in the following soybean years.”
e1“Resistant soybean not only reduced SCN population density”
Claim · model-written summary
Pioneer brand 9234 reduced subsequent nematode population density more effectively than Freeborn.
- Taxon
- soybeanGlycine maxe0
- Material
- Pioneer brand 9234e0
- Treatment
- Pioneer brand 9234e0
- Interactor
- Heterodera glycinesHeterodera glycinese1pest
- Outcome
- SCN population densitye0
- Direction
- reducinge0
- Qualifier
- following yearse0
- Comparator
- Freeborne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pioneer brand 9234 was more effective than Freeborn in reducing SCN population density and increasing soybean yield in the following years.”
e1“soybean [ Glycine max (L.) Merr.] cyst nematode (SCN), Heterodera glycines”
Claim · model-written summary
Pioneer brand 9234 increased subsequent soybean yield more effectively than Freeborn.
- Taxon
- soybeanGlycine maxe0
- Material
- Pioneer brand 9234e0
- Treatment
- Pioneer brand 9234e0
- Outcome
- soybean yielde0
- Direction
- increasinge0
- Qualifier
- following yearse0
- Comparator
- Freeborne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pioneer brand 9234 was more effective than Freeborn in reducing SCN population density and increasing soybean yield in the following years.”
Claim · model-written summary
The authors recommend resistant cultivars for soybean cyst nematode management.
- Taxon
- soybeanGlycine maxe1
- Interactor
- Heterodera glycinesHeterodera glycinese1pest
- Outcome
- use of resistant cultivars is an effective tactic for SCN managemente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“use of resistant cultivars is an effective tactic for SCN management”
e1“soybean [ Glycine max (L.) Merr.] cyst nematode (SCN), Heterodera glycines”
Claim · model-written summary
The authors advise against using tillage solely to manage soybean cyst nematode populations in northern climate and soil conditions.
- Taxon
- soybeanGlycine maxe1
- Interactor
- Heterodera glycinesHeterodera glycinese1pest
- Outcome
- tillage is not an option solely for managing SCN populatione0
- Qualifier
- northern climate and soil conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tillage is not an option solely for managing SCN population in the northern climate and soil conditions.”
e1“soybean [ Glycine max (L.) Merr.] cyst nematode (SCN), Heterodera glycines”
The same questions in other papers
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- positive
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263 papers in the same direction as this paper · 100 in the opposite direction · 26 reporting no difference from an alternative
- negative
- no effect
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See all 390 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.