Abstract
Abstract Six cultivars and three lines of soybean (Glycine max (L.) Merr.) were planted at two locations in Delaware in 1974 and 1975. Potassium fertilizer (KCl) at 0, 56, or 223 kg/ha actual K was added to the soil and the plants were evaluated for seed yield and incidence of gray‐moldy and purple‐stained seed. Potassium application was related to a decrease in yield in one year at one location but had no significant effect in the other year or at the other location. Cultivars differed in yield over the two years, with Kent, Cutler 71, and York having the most consistent yield in this study. The pathogen incidence was not affected by potassium application in contrast to earlier studies with soybeans grown in aluminum cylinders with a partially restricted soil volume. In this study, gray‐moldy and purple‐stain was highest in short season cultivars and higher at Georgetown than at Newark. Use of soybean cultivars resistant to diseases as well as maintaining adequate soil potassium levels should reduce high levels of disease. Notes Published with the approval of the Director of the Delaware Agricultural Experiment Station as Miscellaneous Paper No. 762. Contribution No. 69 of the Department of Plant Science. Supported In part by a grant from the Potash Institute of North America. The authors gratefully acknow‐Miss Debra Conrad and Miss Cindy Elliott and Mr. Randy Collier for technical assistance. Formerly Assistant Professor, Plant Science Department (Currently Associate Professor, University of Nebraska‐South Central Station, Clay Center, NE 68933). Formerly Graduate Research Assistant. Professor, Plant Science Department.
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Claims 8
Claim · model-written summary
Potassium application decreased soybean yield in one year at one location.
- Taxon
- Soybean
Glycine maxt0 - Treatment
- Potassium applicatione0
- Outcome
- yielde0
- Direction
- decreasee0
- Qualifier
- one year at one locatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potassium application was related to a decrease in yield in one year at one location”
t0“Soybean (Glycine max (L.) Merr.)”
Claim · model-written summary
Potassium application had no significant yield effect in the other year or at the other location.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- Potassium applicatione1
- Outcome
- yielde1
- Qualifier
- the other year or at the other locatione0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“had no significant effect in the other year or at the other location”
e1“Potassium application was related to a decrease in yield in one year at one location”
t0“Soybean (Glycine max (L.) Merr.)”
Claim · model-written summary
Cultivars differed in yield over two years.
- Taxon
- SoybeanGlycine maxt0
- Material
- Cultivarse0
- Outcome
- yielde0
- Direction
- differede0
- Qualifier
- over the two yearse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cultivars differed in yield over the two years, with Kent, Cutler 71, and York having the most consistent yield in this study”
t0“Soybean (Glycine max (L.) Merr.)”
Claim · model-written summary
Kent, Cutler 71 and York had the most consistent yield.
- Taxon
- SoybeanGlycine maxt0
- Material
- Kent, Cutler 71, and Yorke0
- Outcome
- consistent yielde0
- Direction
- moste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Kent, Cutler 71, and York having the most consistent yield in this study”
t0“Soybean (Glycine max (L.) Merr.)”
Claim · model-written summary
Potassium application did not affect pathogen incidence.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- potassium applicatione0
- Outcome
- pathogen incidencee0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The pathogen incidence was not affected by potassium application”
t0“Soybean (Glycine max (L.) Merr.)”
Claim · model-written summary
Gray-moldy and purple-stain were highest in short season cultivars.
- Taxon
- SoybeanGlycine maxt0
- Material
- short season cultivarse0
- Outcome
- gray‐moldy and purple‐staine0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“gray‐moldy and purple‐stain was highest in short season cultivars”
t0“Soybean (Glycine max (L.) Merr.)”
Claim · model-written summary
Gray-moldy and purple-stain were higher at Georgetown than Newark.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- gray‐moldy and purple‐staine1
- Direction
- highere0
- Comparator
- Newarke0
- Setting
- Georgetowne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher at Georgetown than at Newark”
e1“gray‐moldy and purple‐stain was highest in short season cultivars”
t0“Soybean (Glycine max (L.) Merr.)”
Claim · model-written summary
The authors recommend disease-resistant soybean cultivars and adequate soil potassium to reduce disease.
- Taxon
- soybeanGlycine maxe0
- Outcome
- Use of soybean cultivars resistant to diseases as well as maintaining adequate soil potassium levelse0
- Direction
- reducee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Use of soybean cultivars resistant to diseases as well as maintaining adequate soil potassium levels should reduce high levels of disease”
The same questions in other papers
potassium · yield · Glycine max (soybean)Results differ
25 papers in the same direction as this paper · 123 in the opposite direction
- positive
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- positive
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See all 149 papers →potassium · disease · Glycine max (soybean)Positive and negative results
1 paper in the same direction as this paper · 5 in the opposite direction
- positive
- positive
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See all 7 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.