Abstract
Suspensions of BHC, lindane, and aldrin applied at 20 pounds and of dieldrin at 40 pounds per acre to the soil surface in a band about the tree rows a few days after planting gave complete protection against woolly apple aphids (Eriosoma lanigerum (Hausm. )) on the roots of apple nursery stock without injuring the trees. Unfortunately, such heavy dosages are impractical and lighter ones failed to give complete control. Heavy dosages of demeton and chlordane were also ineffective. Dipping the roots of apple seedlings into pastes made up of 1 to 2 teaspoonfuls of BHC (10% gamma isomer), 50% dieldrin, an aldrin wettable powder containing 25% of the active ingredient with 1½ pounds of Attaclay or charcoal in 1 quart of water reduced the infestation and did not injure the trees but was cumbersome to carry out. In trunk-spray experiments moderate practical dosages of BHC, Sevin® (1-naphthyl methylcarbamate), demeton, and Guthion® (O,O-dimethyl S-(4-oxo-3H-1,2,3-benzotriazine- 3-methyl) phosphorodithioate), (about 6 to 10 ounces per acre) near the ground and to a narrow band of soil about the tree rows gave an encouraging degree of control and caused no injury. The minimum effective dosages remain to be determined. Trithion® (S-(p-chlorophenylthio)methyl O,O-diethyl phosphorodithioate), schradan, and Nemagon (1,2-Dibromo-3-chloropropane) were less effective.
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Claims 7
Claim · model-written summary
Heavy BHC, lindane and aldrin soil applications completely protected apple nursery roots from woolly apple aphids without tree injury.
- Taxon
- apple nursery stocke0
- Treatment
- BHC, lindane, and aldrin applied at 20 poundse0
- Interactor
- Eriosoma lanigerum
Eriosoma lanigerume0pest - Outcome
- protection against woolly apple aphidse0
- Direction
- completee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Suspensions of BHC, lindane, and aldrin applied at 20 pounds and of dieldrin at 40 pounds per acre to the soil surface in a band about the tree rows a few days after planting gave complete protection against woolly apple aphids (Eriosoma lanigerum (Hausm. )) on the roots of apple nursery stock without injuring the trees”
Claim · model-written summary
Dieldrin at 40 pounds per acre completely protected apple nursery roots from woolly apple aphids without tree injury.
- Taxon
- apple nursery stocke0
- Treatment
- dieldrin at 40 pounds per acree0
- Interactor
- Eriosoma lanigerumEriosoma lanigerume0pest
- Outcome
- protection against woolly apple aphidse0
- Direction
- completee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“of dieldrin at 40 pounds per acre to the soil surface in a band about the tree rows a few days after planting gave complete protection against woolly apple aphids (Eriosoma lanigerum (Hausm. )) on the roots of apple nursery stock without injuring the trees”
Claim · model-written summary
Lighter insecticide dosages failed to give complete aphid control.
- Taxon
- Apple
Malus domesticat0 - Treatment
- lighter onese0
- Interactor
- Eriosoma lanigerumEriosoma lanigerume1pest
- Outcome
- complete controle0
- Direction
- failede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Apple Nursery Stock”
e0“lighter ones failed to give complete control”
e1“woolly apple aphids (Eriosoma lanigerum (Hausm. ))”
Claim · model-written summary
Heavy demeton and chlordane dosages were ineffective for aphid control.
- Taxon
- AppleMalus domesticat0
- Treatment
- demeton and chlordanee0
- Interactor
- Eriosoma lanigerumEriosoma lanigerume1pest
- Outcome
- ineffectivee0
- Direction
- ineffectivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Apple Nursery Stock”
e0“Heavy dosages of demeton and chlordane were also ineffective”
e1“woolly apple aphids (Eriosoma lanigerum (Hausm. ))”
Claim · model-written summary
Root dipping in insecticide pastes reduced aphid infestation without injuring apple seedlings.
- Taxon
- apple seedlingsMalus domesticae0
- Treatment
- Dipping the roots of apple seedlings into pastese0
- Interactor
- Eriosoma lanigerumEriosoma lanigerume1pest
- Outcome
- infestatione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dipping the roots of apple seedlings into pastes made up of 1 to 2 teaspoonfuls of BHC (10% gamma isomer), 50% dieldrin, an aldrin wettable powder containing 25% of the active ingredient with 1½ pounds of Attaclay or charcoal in 1 quart of water reduced the infestation and did not injure the trees”
e1“woolly apple aphids (Eriosoma lanigerum (Hausm. ))”
Claim · model-written summary
Practical trunk spray doses of BHC, Sevin, demeton and Guthion controlled aphids to an encouraging degree without injury.
- Taxon
- AppleMalus domesticat0
- Treatment
- BHC, Sevin® (1-naphthyl methylcarbamate), demeton, and Guthion®e0
- Interactor
- Eriosoma lanigerumEriosoma lanigerume1pest
- Outcome
- controle0
- Direction
- encouraging degreee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Apple Nursery Stock”
e0“moderate practical dosages of BHC, Sevin® (1-naphthyl methylcarbamate), demeton, and Guthion® (O,O-dimethyl S-(4-oxo-3H-1,2,3-benzotriazine- 3-methyl) phosphorodithioate), (about 6 to 10 ounces per acre) near the ground and to a narrow band of soil about the tree rows gave an encouraging degree of control and caused no injury”
e1“woolly apple aphids (Eriosoma lanigerum (Hausm. ))”
Claim · model-written summary
Trithion, schradan and Nemagon were less effective against woolly apple aphids.
- Taxon
- AppleMalus domesticat0
- Treatment
- Trithion® (S-(p-chlorophenylthio)methyl O,O-diethyl phosphorodithioate), schradan, and Nemagon (1,2-Dibromo-3-chloropropane)e0
- Interactor
- Eriosoma lanigerumEriosoma lanigerume1pest
- Outcome
- effectivee0
- Direction
- lesse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Apple Nursery Stock”
e0“Trithion® (S-(p-chlorophenylthio)methyl O,O-diethyl phosphorodithioate), schradan, and Nemagon (1,2-Dibromo-3-chloropropane) were less effective”
e1“woolly apple aphids (Eriosoma lanigerum (Hausm. ))”
The same questions in other papers
application · Eriosoma lanigerum · Malus domestica (apple)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.