Abstract
Tests to determine the effect of beet yellows and beet western yellows on sugar beets grown for seed were conducted in field plots From 1959 to 1962. The effect of these diseases, alone and in combination with each other and with curly top, was tested. Green peach aphids (Myzus persicae (Sulzer)) were used as vectors of the yellows viruses and beet leafhoppers (Circulifer teneltus (Baker)) as vectors of the curly top virus. Both beet yellows and beet western yellows reduced seed yields but did not affect germination. Mixtures of the two yellows viruses caused much greater losses than either one alone, and early infections reduced yields more than later infections. Early spring yellows infection of curly top-resistant beets inoculated with curly top in the fall did not reduce yields more than yellows alone. Spring infection of curly top-susceptible beets with curly top virus had no measurable effect on the seed crop, but when followed by yellows infection, losses were greater than with yellows alone.
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Claims 9
Claim · model-written summary
Beet yellows reduced seed yield.
- Taxon
- sugar beets
Beta vulgaris subsp. vulgarist0 - Treatment
- beet yellowse0
- Outcome
- seed yieldse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sugar beets”
e0“Both beet yellows and beet western yellows reduced seed yields but did not affect germination”
Claim · model-written summary
Beet western yellows reduced seed yield.
- Taxon
- sugar beetsBeta vulgaris subsp. vulgarist0
- Treatment
- beet western yellowse0
- Outcome
- seed yieldse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sugar beets”
e0“Both beet yellows and beet western yellows reduced seed yields but did not affect germination”
Claim · model-written summary
Beet yellows did not affect germination.
- Taxon
- sugar beetsBeta vulgaris subsp. vulgarist0
- Treatment
- beet yellowse0
- Outcome
- germinatione0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sugar beets”
e0“Both beet yellows and beet western yellows reduced seed yields but did not affect germination”
Claim · model-written summary
Beet western yellows did not affect germination.
- Taxon
- sugar beetsBeta vulgaris subsp. vulgarist0
- Treatment
- beet western yellowse0
- Outcome
- germinatione0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sugar beets”
e0“Both beet yellows and beet western yellows reduced seed yields but did not affect germination”
Claim · model-written summary
Combined yellows viruses caused greater seed losses than either alone.
- Taxon
- sugar beetsBeta vulgaris subsp. vulgarist0
- Treatment
- Mixtures of the two yellows virusese0
- Outcome
- lossese0
- Direction
- much greatere0
- Comparator
- either one alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sugar beets”
e0“Mixtures of the two yellows viruses caused much greater losses than either one alone”
Claim · model-written summary
Early infection reduced yield more than later infection.
- Taxon
- sugar beetsBeta vulgaris subsp. vulgarist0
- Treatment
- early infectionse0
- Outcome
- yieldse0
- Direction
- reducede0
- Comparator
- later infectionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sugar beets”
e0“early infections reduced yields more than later infections”
Claim · model-written summary
Early spring yellows infection after fall curly top inoculation caused no extra loss over yellows alone in resistant beets.
- Taxon
- beets
Beta vulgarise0 - Material
- curly top-resistant beetse0
- Treatment
- Early spring yellows infectione0
- Outcome
- yieldse0
- Direction
- did not reducee0
- Comparator
- yellows alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Early spring yellows infection of curly top-resistant beets inoculated with curly top in the fall did not reduce yields more than yellows alone”
Claim · model-written summary
Spring curly top infection did not measurably affect seed crop in susceptible beets.
- Taxon
- beetsBeta vulgarise0
- Material
- curly top-susceptible beetse0
- Treatment
- Spring infectione0
- Outcome
- seed crope0
- Direction
- no measurable effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spring infection of curly top-susceptible beets with curly top virus had no measurable effect on the seed crop”
Claim · model-written summary
Adding yellows after curly top caused greater losses than yellows alone in susceptible beets.
- Taxon
- beetsBeta vulgarist0
- Treatment
- yellows infectione0
- Outcome
- lossese0
- Direction
- greatere0
- Comparator
- yellows alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“beets”
e0“when followed by yellows infection, losses were greater than with yellows alone”
The same questions in other papers
infection · yield · Beta vulgaris (beet)Positive and negative results
6 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- no effect
5 papers more in this group
See all 9 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.