Abstract
A study (1990 to 1992) was conducted in western Kentucky to determine the effects of wheat (Triticum aestivum «Clark») residue and minimal- (two disking) or no-tillage on soybean cyst nematode (Heterodera glycines) cyst and egg population densities and yield of the H. glycinessusceptible soybean (Glycine max) cultivar Pennyrile. In each year, cyst densities at soybean planting were unaffected by the presence of residue from a prior winter wheat crop; however, harvest population densities were lower in plots with wheat residue compared with those without residue. Across residue treatments, tillage had no effect on harvest densities of cysts in any year. Differences in egg densities, determined only in 1992, were similar to differences detected in cyst densities for both residue and tillage. Minimum-tillage of wheat residue significantly reduced the «residue effect» in 1990 and 1991; however, plots with wheat residue had fewer cysts at harvest than plots without residue in both years regardless of tillage method. Neither residue nor tillage affected soybean yields. Results indicate that producers who have the option to no-till doublecrop soybean following wheat may have an advantage in long-term management of H. glycines
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Claims 7
Claim · model-written summary
Wheat residue did not affect cyst density at soybean planting.
- Taxon
- soybean
Glycine maxt0 - Treatment
- residue from a prior winter wheat crope0
- Interactor
- Heterodera glycines
Heterodera glycinest1pathogen - Outcome
- cyst densities at soybean plantinge0
- Direction
- unaffectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cyst densities at soybean planting were unaffected by the presence of residue from a prior winter wheat crop”
t0“Yield of Doublecrop Soybean”
t1“Heterodera glycines”
Claim · model-written summary
Wheat residue lowered harvest cyst densities relative to no residue.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- wheat residuee0
- Interactor
- Heterodera glycinesHeterodera glycinest1pathogen
- Outcome
- harvest population densitiese0
- Direction
- lowere0
- Comparator
- those without residuee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“harvest population densities were lower in plots with wheat residue compared with those without residue”
t0“Soybean”
t1“Heterodera glycines”
Claim · model-written summary
Tillage had no effect on harvest cyst density across residue treatments.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- tillagee0
- Interactor
- Heterodera glycinesHeterodera glycinest1pathogen
- Outcome
- harvest densities of cystse0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Across residue treatments, tillage had no effect on harvest densities of cysts in any year”
t0“Soybean”
t1“Heterodera glycines”
Claim · model-written summary
Egg densities in 1992 showed differences similar to cyst densities under residue and tillage treatments.
- Taxon
- SoybeanGlycine maxt0
- Interactor
- Heterodera glycinesHeterodera glycinest1pathogen
- Outcome
- egg densitiese0
- Qualifier
- determined only in 1992e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Differences in egg densities, determined only in 1992, were similar to differences detected in cyst densities for both residue and tillage”
t0“Soybean”
t1“Heterodera glycines”
Claim · model-written summary
Minimum tillage reduced the wheat residue effect significantly in 1990 and 1991.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- Minimum-tillage of wheat residuee0
- Interactor
- Heterodera glycinesHeterodera glycinest1pathogen
- Outcome
- «residue effect»e0
- Direction
- reducede0
- Qualifier
- in 1990 and 1991e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Minimum-tillage of wheat residue significantly reduced the «residue effect» in 1990 and 1991”
t0“Soybean”
t1“Heterodera glycines”
Claim · model-written summary
Soybean yield was unaffected by residue or tillage.
- Taxon
- soybeanGlycine maxe0
- Treatment
- residue nor tillagee0
- Outcome
- soybean yieldse0
- Direction
- Neither residue nor tillage affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neither residue nor tillage affected soybean yields”
Claim · model-written summary
The authors suggest no till doublecrop soybean after wheat may aid long term nematode management.
- Taxon
- soybeanGlycine maxe0
- Interactor
- H. glycinesHeterodera glycinese0pathogen
- Outcome
- no-till doublecrop soybean following wheate0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“producers who have the option to no-till doublecrop soybean following wheat may have an advantage in long-term management of H. glycines”
The same questions in other papers
tillage · Heterodera glycines · Glycine max (soybean)Positive and negative results
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- positive
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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.