Abstract
A diagrammatic scale to assess Glomerella leaf spot severity (Colletotrichum spp) was developed and validated during the tryout of a fungicide efficiency experiment in the field. Apple leaves were collected for determination of minimum and maximum severity limits; intermediate levels were obtained according to "Weber-Fechner's stimulus-response law". Scale validation was performed by four raters, which estimated the severity in 100 leaves; with and without the use of the scale. An experiment was carried out in a commercial orchard in randomized blocks with 10 plants. The treatments and dosages (g 100 L-1 of water) used were: cyprodinil (15); pyrimethanil (30, 37.5, 45); propineb (140) e mancozeb (160) + tebuconazole (12.50), and a control (no spray). The incidence and severity in leaves; number of fruits, weight and incidence in fruit (harvest) and defoliation (after harvest) were evaluated. The proposed scale showed the levels of 0.08; 0.28; 0.99; 3.45; 11.23 and 30.93%. The scale was adequate for severity assessment; R2 changed from 0.68 to 0.96 with the use of the scale. Pyrimethanil treatments did not control the disease. The incidence on fruit was 30 and on leaves 63%. The incidence was reduced in 35.6% (propineb) and 33.7% (mancozeb + tebuconazole) related to the control, these treatments were efficient to control the disease. The defoliation was 44 % in the control against 9.6 and 2.5% to propineb and mancozeb + tebuconazole.
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Claims 9
Claim · model-written summary
The scale provided six severity levels from 0.08 to 30.93%.
Verbatim
e0“The proposed scale showed the levels of 0.08; 0.28; 0.99; 3.45; 11.23 and 30.93%”
Claim · model-written summary
Use of the scale improved severity assessment R2 from 0.68 to 0.96.
Verbatim
e0“The scale was adequate for severity assessment; R2 changed from 0.68 to 0.96 with the use of the scale”
Claim · model-written summary
Pyrimethanil treatments did not control the disease.
Not reportedTaxonComparator
Verbatim
e0“Pyrimethanil treatments did not control the disease”
Claim · model-written summary
Fruit disease incidence was 30%.
- Taxon
- apple
Malus domesticat0 - Organ / stage
- fruite0
- Outcome
- incidence on fruite0
- Value
- 30e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The incidence on fruit was 30 and on leaves 63%”
t0“apple”
Claim · model-written summary
Leaf disease incidence was 63%.
- Taxon
- appleMalus domesticat0
- Organ / stage
- leavese0
- Outcome
- leavese0
- Value
- 63%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on leaves 63%”
t0“apple”
Claim · model-written summary
Propineb reduced incidence by 35.6% relative to control.
- Taxon
- appleMalus domesticat0
- Treatment
- propinebe0
- Outcome
- incidencee0
- Direction
- reducede0
- Value
- 35.6%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The incidence was reduced in 35.6% (propineb) and 33.7% (mancozeb + tebuconazole) related to the control”
t0“apple”
Claim · model-written summary
Mancozeb plus tebuconazole reduced incidence by 33.7% relative to control.
- Taxon
- appleMalus domesticat0
- Treatment
- mancozeb + tebuconazolee0
- Outcome
- incidencee0
- Direction
- reducede0
- Value
- 33.7%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The incidence was reduced in 35.6% (propineb) and 33.7% (mancozeb + tebuconazole) related to the control”
t0“apple”
Claim · model-written summary
Defoliation under propineb was 9.6%, compared with 44% in the control.
- Taxon
- appleMalus domesticat0
- Treatment
- propinebe0
- Outcome
- defoliatione0
- Value
- 9.6e0
- Qualifier
- 44 %e0
- Comparator
- controle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The defoliation was 44 % in the control against 9.6 and 2.5% to propineb and mancozeb + tebuconazole”
t0“apple”
Claim · model-written summary
Defoliation under mancozeb plus tebuconazole was 2.5%, compared with 44% in the control.
- Taxon
- appleMalus domesticat0
- Treatment
- mancozeb + tebuconazolee0
- Outcome
- defoliatione0
- Value
- 2.5%e0
- Qualifier
- 44 %e0
- Comparator
- controle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The defoliation was 44 % in the control against 9.6 and 2.5% to propineb and mancozeb + tebuconazole”
t0“apple”
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See all 11 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.