Abstract
A 4-year experiment, 1991 to 1994, was conducted in a field where sudden death syndrome (SDS) had previously been observed. The objective was to determine the effects of tillage, planting date, and soybean cultivar on the percentage of leaves with symptoms of SDS at R6 growth stage. The soybean cultivars Essex, Forrest, Hartwig, and Rhodes were each planted in 75-cm-wide rows in disk-till, ridge-till, and no-till plots. The planting dates were mid-May, mid-June, and late June to early July each year. Symptoms of SDS developed in 1991, 1992, and 1994, but in not 1993. There were significant year × cultivar (P = 0.0001) and tillage × planting date × cultivar (P = 0.05) interactions for the percentage of leaves with symptoms of SDS. Essex, Forrest, and Rhodes had a greater percentage of leaves with symptoms of SDS than did Hartwig in 1991 and 1994; differences among cultivars did not occur in 1992. The percentage of Essex, Forrest, and Rhodes leaves with symptoms of SDS was greater for no-till than for either disk-till or ridge-till in mid-May plantings. There were no significant correlations between the percentage of leaves with SDS and yield
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Claims 9
Claim · model-written summary
Sudden death syndrome symptoms developed in 1991, 1992 and 1994, but not 1993.
- Taxon
- Soybean
Glycine maxt0 - Outcome
- Symptoms of SDSe0
Not reportedSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Symptoms of SDS developed in 1991, 1992, and 1994, but in not 1993.”
t0“Soybean”
Claim · model-written summary
Year and cultivar interacted significantly for percentage of symptomatic leaves.
- Taxon
- SoybeanGlycine maxt0
- Material
- cultivare0
- Outcome
- percentage of leaves with symptoms of SDSe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were significant year × cultivar (P = 0.0001) and tillage × planting date × cultivar (P = 0.05) interactions for the percentage of leaves with symptoms of SDS.”
t0“Soybean”
Claim · model-written summary
Tillage, planting date and cultivar interacted significantly for symptomatic leaf percentage.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- tillage × planting datee0
- Outcome
- percentage of leaves with symptoms of SDSe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were significant year × cultivar (P = 0.0001) and tillage × planting date × cultivar (P = 0.05) interactions for the percentage of leaves with symptoms of SDS.”
t0“Soybean”
Claim · model-written summary
Essex had more symptomatic leaves than Hartwig in 1991 and 1994.
- Taxon
- SoybeanGlycine maxt0
- Material
- Essexe0
- Outcome
- percentage of leaves with symptoms of SDSe0
- Direction
- greatere0
- Qualifier
- in 1991 and 1994e0
- Comparator
- Hartwige0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Essex, Forrest, and Rhodes had a greater percentage of leaves with symptoms of SDS than did Hartwig in 1991 and 1994”
t0“Soybean”
Claim · model-written summary
Forrest had more symptomatic leaves than Hartwig in 1991 and 1994.
- Taxon
- SoybeanGlycine maxt0
- Material
- Forreste0
- Outcome
- percentage of leaves with symptoms of SDSe0
- Direction
- greatere0
- Qualifier
- in 1991 and 1994e0
- Comparator
- Hartwige0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Essex, Forrest, and Rhodes had a greater percentage of leaves with symptoms of SDS than did Hartwig in 1991 and 1994”
t0“Soybean”
Claim · model-written summary
Rhodes had more symptomatic leaves than Hartwig in 1991 and 1994.
- Taxon
- SoybeanGlycine maxt0
- Material
- Rhodese0
- Outcome
- percentage of leaves with symptoms of SDSe0
- Direction
- greatere0
- Qualifier
- in 1991 and 1994e0
- Comparator
- Hartwige0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Essex, Forrest, and Rhodes had a greater percentage of leaves with symptoms of SDS than did Hartwig in 1991 and 1994”
t0“Soybean”
Claim · model-written summary
Cultivars did not differ in symptomatic leaf percentage in 1992.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- differences among cultivarse0
- Direction
- did not occure0
- Qualifier
- in 1992e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“differences among cultivars did not occur in 1992”
t0“Soybean”
Claim · model-written summary
For Essex, Forrest and Rhodes, no-till raised symptomatic leaf percentage versus disk-till or ridge-till in mid-May plantings.
- Taxon
- SoybeanGlycine maxt0
- Material
- Essex, Forrest, and Rhodese0
- Treatment
- no-tille0
- Outcome
- leaves with symptoms of SDSe0
- Direction
- greatere0
- Qualifier
- mid-May plantingse0
- Comparator
- disk-till or ridge-tille0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The percentage of Essex, Forrest, and Rhodes leaves with symptoms of SDS was greater for no-till than for either disk-till or ridge-till in mid-May plantings.”
t0“Soybean”
Claim · model-written summary
Symptomatic leaf percentage and yield showed no significant correlation.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- percentage of leaves with SDSe0
- Comparator
- yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were no significant correlations between the percentage of leaves with SDS and yield”
t0“Soybean”
The same questions in other papers
tillage · survival · Glycine max (soybean)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- 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.