Abstract
Five different biocontrol preparations and the commercial bioagent Plant guard varied in their effects in controlling powdery mildew of grapes, incited by Uncinula necator (Schw.) Burr. A mixture of Trichoderma harzianum isolate number 5 and isolate number 28 with T. hamatum isolate number 17 proved to be more effective than the single isolates and even was the most potent of the tested bioagents. However, the least potentiality was recorded with Bacillus subtilis application. Number of sprays increased the disease control up to three sprays, whereas the fourth spray did not increase the efficiency of the bioagent. Concerning with the bioagent concentrations, five various doses had been tested and the most effective was 250 ml of the bioagent preparation in 100 liter of water. No great differences were obtained if the concentration was increased to 350 ml/100 L water. Two different scales had been applied for disease detection; disease incidence and disease severity. The latter scale was more reliable. In general, all the bioagent treatments gave similar or near similar potentiality while great differences occurred with the disease incidence.
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Claims 9
Claim · model-written summary
A mixture of Trichoderma isolates was more effective against grape powdery mildew than single isolates and other tested agents.
- Taxon
- GRAPEt0
- Treatment
- A mixture of Trichoderma harzianum isolate number 5 and isolate number 28 with T. hamatum isolate number 17e0
- Interactor
- Trichoderma harzianum
Trichoderma harzianume0biocontrol_agent - Outcome
- more effectivee0
- Direction
- more effectivee0
- Comparator
- single isolatese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A mixture of Trichoderma harzianum isolate number 5 and isolate number 28 with T. hamatum isolate number 17 proved to be more effective than the single isolates and even was the most potent of the tested bioagents”
t0“GRAPE”
Claim · model-written summary
Bacillus subtilis application had the least control potential.
- Taxon
- GRAPEt0
- Treatment
- Bacillus subtilis applicatione0
- Interactor
- Bacillus subtilis
Bacillus subtilise0biocontrol_agent - Outcome
- least potentialitye0
- Direction
- leaste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the least potentiality was recorded with Bacillus subtilis application”
t0“GRAPE”
Claim · model-written summary
Disease control increased with spray number up to three sprays.
- Taxon
- GRAPEt0
- Treatment
- Number of sprayse0
- Outcome
- disease controle0
- Direction
- increasede0
- Value
- three sprayse0
Not reportedComparator
Verbatim
e0“Number of sprays increased the disease control up to three sprays”
t0“GRAPE”
Claim · model-written summary
A fourth spray did not increase bioagent efficiency.
Not reportedComparator
Verbatim
e0“the fourth spray did not increase the efficiency of the bioagent”
t0“GRAPE”
Claim · model-written summary
The most effective tested bioagent dose was 250 ml in 100 liters of water.
- Taxon
- GRAPEt0
- Treatment
- 250 ml of the bioagent preparation in 100 liter of watere0
- Outcome
- most effectivee0
- Direction
- most effectivee0
Not reportedComparator
Verbatim
e0“the most effective was 250 ml of the bioagent preparation in 100 liter of water”
t0“GRAPE”
Claim · model-written summary
Increasing bioagent concentration to 350 ml per 100 L of water produced no great difference.
Not reportedComparator
Verbatim
e0“No great differences were obtained if the concentration was increased to 350 ml/100 L water”
t0“GRAPE”
Claim · model-written summary
Disease severity was a more reliable detection scale than disease incidence.
Verbatim
e0“Two different scales had been applied for disease detection; disease incidence and disease severity. The latter scale was more reliable”
t0“GRAPE”
Claim · model-written summary
Bioagent treatments had similar or nearly similar potentiality.
Verbatim
e0“all the bioagent treatments gave similar or near similar potentiality”
t0“GRAPE”
Claim · model-written summary
Disease incidence differed greatly among bioagent treatments.
Verbatim
e0“great differences occurred with the disease incidence”
t0“GRAPE”
The same questions in other papers
application · control · VitisPositive and negative results
7 papers in the same direction as this paper · 5 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- negative
- negative
10 papers more in this group
See all 14 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.