Claim · model-written summary
Effective spraying should target very young leaf-folders or eggs.
- Taxon
- apple
Malus domesticat0 - Interactor
- leaf-folderse0pest
- Outcome
- spraying must be done when the leaf-folders are very young, or when they are still in the egg stagee0
Not reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“To be effective, spraying must be done when the leaf-folders are very young, or when they are still in the egg stage.”
t0“apple”
Title
R. L. Webster Iowa State University Digital Repository (Iowa State University) 1908
Other claims from this paper (5)
- Observation The lesser apple leaf-folder folds leaves of apple stock in nurseries and young orchards.
- Observation The lesser apple leaf-folder folds leaves of plum stock in nurseries and young orchards.
- Observation Leaf-folders appear three times during the season, at leaf emergence, mid-June and early August.
- Observation Leaf-folders remain on trees four to six weeks before maturity.
- Recommendation The recommended spray times are leaf emergence, the first week of June and the first week of August.