Claim · model-written summary
Esters of 2,4-D were the most effective spray treatment.
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Verbatim
e0“esters of 2,4-D proved the most effective in spray applications”
e1“woody plants”
Title
On eradication of woody plants with herbicides in fields and pastures
Jaakko Mukula Agricultural and Food Science 1950. doi:10.23986/afsci.71275
Other claims from this paper (19)
- Recommendation The authors recommended early summer foliar artificial-hormone spray for small woody sprouts, except possibly aspen.
- Intervention effect Other artificial hormones also gave satisfactory spray results.
- Observation Required spray concentration varied by woody species from 0.1 to 0.4% active substance.
- Observation A single application was difficult to make sufficiently effective.
- Recommendation Authors recommended a second control spray after 2—3 weeks.
- Association Treatment was most effective in warm sunny weather.
- Association Spraying was best at the end of June or beginning of July.
- Intervention effect Early spring treatment led to many new sprouts.
- Intervention effect Late summer artificial hormones did not kill leaves effectively.
- Observation Leaves on young sprouts and suckers died more readily than on old trees and shrubs.
- Intervention effect One summer of spraying could almost completely prevent alder regeneration, unless sprouts grew from tall-tree stumps.
- Observation Willow, birch, mountain ash and aspen often regenerated slightly the next summer.
- Intervention effect Chlorate and chresol killed sprout leaves but did not stop new sprout development.
- Intervention effect Aqueous artificial hormones were effectively absorbed through a cut alder branch.
- Intervention effect Water-insoluble artificial hormones were not absorbed through cut branches.
- Association Lower-concentration solutions were absorbed more easily than higher-concentration solutions.
- Intervention effect Cut-branch treatment killed relatively tall alders and their roots but failed on other tall woody species when applied to one branch.
- Mechanism Stopping transpiration by cutting above the absorbing branch drove substance toward alder roots.
- Intervention effect Soil applications of hormones, chlorate and chresol did not satisfactorily destroy woody plants at reasonable cost.