Abstract
SUMMARY In laboratory tests on young lettuce plants, the protection provided by sprays of zineb wettable powder against artificial inoculations with Bremia lactucae was less than that obtained with tank‐mix zineb, and with several other dithiocarbamates and related fungicides. Experiments on autumn lettuce in the field also showed that tank‐mix zineb was more effective than the wettable powder. On winter lettuce in frames, however, zineb wettable powder gave control similar to or better than that given by any of the other materials tested. Infection in most of these outdoor experiments was not heavy. None of the fungicides gave very high control or markedly increased the number of hearted or marketable plants. When zineb wettable powder was sprayed on autumn lettuce at the rate of 2 lb./acre it gave similar disease reductions whether applied in low, medium or high volumes of water.
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Claims 6
Claim · model-written summary
In laboratory tests zineb wettable powder protected young lettuce less than tank-mix zineb and related fungicides.
- Taxon
- lettuce
Lactuca sativae0 - Treatment
- sprays of zineb wettable powdere0
- Interactor
- Bremia lactucae
Bremia lactucaee0pathogen - Outcome
- protectione0
- Direction
- lesse0
- Comparator
- tank‐mix zinebe0
- Setting
- laboratory testse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

.jpg?width=500)
Verbatim
e0“In laboratory tests on young lettuce plants, the protection provided by sprays of zineb wettable powder against artificial inoculations with Bremia lactucae was less than that obtained with tank‐mix zineb, and with several other dithiocarbamates and related fungicides.”
Claim · model-written summary
Tank-mix zineb was more effective than wettable powder on autumn field lettuce.
- Taxon
- lettuce
Lactuca sativae0 - Treatment
- tank‐mix zinebe0
- Interactor
- Bremia lactucae
Bremia lactucaet0pathogen - Outcome
- effectivee0
- Direction
- more effectivee0
- Comparator
- wettable powdere0
- Setting
- fielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

.jpg?width=500)
Verbatim
e0“Experiments on autumn lettuce in the field also showed that tank‐mix zineb was more effective than the wettable powder.”
t0“Bremia lactucae”
Claim · model-written summary
Zineb wettable powder controlled downy mildew similarly or better than other tested materials in winter lettuce frames.
- Taxon
- lettuce
Lactuca sativae0 - Treatment
- zineb wettable powdere0
- Interactor
- Bremia lactucae
Bremia lactucaet0pathogen - Outcome
- controle0
- Direction
- similar to or bettere0
- Comparator
- other materials testede0
- Setting
- framese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

.jpg?width=500)
Verbatim
e0“On winter lettuce in frames, however, zineb wettable powder gave control similar to or better than that given by any of the other materials tested.”
t0“Bremia lactucae”
Claim · model-written summary
No tested fungicide provided very high disease control.
- Taxon
- lettuce
Lactuca sativat0 - Treatment
- fungicidese0
- Interactor
- Bremia lactucae
Bremia lactucaet0pathogen - Outcome
- controle0
- Direction
- Nonee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

.jpg?width=500)
Verbatim
e0“None of the fungicides gave very high control or markedly increased the number of hearted or marketable plants.”
t0“downy mildew of lettuce (Bremia lactucae Regel)”
Claim · model-written summary
Fungicides did not markedly increase hearted or marketable plant numbers.
- Taxon
- lettuce
Lactuca sativat0 - Treatment
- fungicidese0
- Interactor
- Bremia lactucae
Bremia lactucaet0pathogen - Outcome
- number of hearted or marketable plantse0
- Direction
- Nonee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

.jpg?width=500)
Verbatim
e0“None of the fungicides gave very high control or markedly increased the number of hearted or marketable plants.”
t0“downy mildew of lettuce (Bremia lactucae Regel)”
Claim · model-written summary
Water spray volume did not change disease reductions from zineb wettable powder on autumn lettuce.
- Taxon
- lettuce
Lactuca sativae0 - Treatment
- zineb wettable powdere0
- Interactor
- Bremia lactucae
Bremia lactucaet0pathogen - Outcome
- disease reductionse0
- Direction
- similare0
- Comparator
- low, medium or high volumes of watere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

.jpg?width=500)
Verbatim
e0“When zineb wettable powder was sprayed on autumn lettuce at the rate of 2 lb./acre it gave similar disease reductions whether applied in low, medium or high volumes of water.”
t0“Bremia lactucae”
The same questions in other papers
zineb · Bremia lactucae · Lactuca sativa (garden lettuce)Results agree
1 paper in the same direction as this paper
- positive
application · Bremia lactucae · Lactuca sativa (garden lettuce)Positive and negative results
1 in the opposite direction
- positive
fungicide · Bremia lactucae · Lactuca sativa (garden lettuce)Positive and negative results
5 in the opposite direction
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →botanical · Bremia lactucae · Lactuca sativa (garden lettuce)Results agree
1 paper in the same direction as this paper
- positive
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.