Claim · model-written summary
At lower droplet densities, ascospore germination on banana leaves was significantly lower with mancozeb than with chlorothalonil.
- Taxon
- bananae0
- Treatment
- mancozebe4
- Interactor
- Mycosphaerella fijiensis
Pseudocercospora fijiensise0pathogen - Outcome
- ascospore germinatione4
- Direction
- lowere4
- Qualifier
- 2–5 droplet cm-2 VMD=989 μm and 804 μm respectivelye4
- Comparator
- chlorothalonile4
Not reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effect of fungicide spray droplet density (droplet cm-2), droplet size, and proximity of the spray droplet deposit to fungal spores was investigated with Mycosphaerella fijiensis ascospores on the banana (Musa AAA) leaf surface for two contact fungicides: chlorothalonil and mancozeb”
e4“At lower droplet densities (2–5 droplet cm-2 VMD=989 μm and 804 μm respectively), ascospore germination on the mancozeb-treated leaves was significantly lower than on the chlorothalonil-treated leaves”
Title
John R. Washington Pesticide Science 1997. doi:10.1002/(sici)1096-9063(199707)50:3<233::aid-ps562>3.3.co;2-m
Other claims from this paper (9)
- Intervention effect At a droplet deposit density of 30 droplet cm-2 with a 250 μm VMD, ascospore germination on banana leaves fell below 1% for both fungicides.
- Intervention effect At a droplet deposit density of 50 droplet cm-2, no ascospores germinated on banana leaves in either fungicide treatment.
- Intervention effect At 10 droplet cm-2 with a 602 μm VMD, ascospore germination reached 0% for both fungicides on banana leaves.
- Observation The zone of inhibition around a chlorothalonil droplet deposit on banana leaves was estimated to extend 1.02 mm beyond the visible deposit edge.
- Observation The zone of inhibition around a mancozeb droplet deposit on banana leaves was estimated to extend 1.29 mm beyond the visible deposit edge.
- Intervention effect Fungicide spray droplet deposit densities lower than currently recommended were confirmed to be effective on banana leaves sampled after commercial applications in a plantation.
- Recommendation Calibrating spray aircraft to 30 droplet cm-2 with a 300-400 μm VMD will probably reduce spray drift compared with aircraft spraying finer droplets.
- Recommendation Calibrating spray aircraft to 30 droplet cm-2 with a 300-400 μm VMD will probably increase deposition efficiency on banana foliage compared with aircraft spraying finer droplets.
- Recommendation Calibrating spray aircraft to 30 droplet cm-2 with a 300-400 μm VMD will probably enhance disease control compared with aircraft spraying finer droplets.