Extracts of Apple Peels as Adjuvants to Lead Arsenate Against the Codling Moth Larva

1942 ◽  
Vol 35 (2) ◽  
pp. 225-226
Author(s):  
E. H. Siegler ◽  
Rowahd A. Jones
Keyword(s):  
Codling Moth ◽  
Moth Larva ◽  
Lead Arsenate ◽  
Apple Peels

Laboratory assessment of the toxicity of field-weathered deposits of insecticides to larvae of the codling moth, Cydia pomonella (L.)

1964 ◽  
Vol 55 (1) ◽  
pp. 35-47 ◽  
Author(s):  
M. Gratwick
Keyword(s):  
Larvicidal Activity ◽  
Larval Mortality ◽  
Cydia Pomonella ◽  
Fruit Size ◽  
Heavy Rain ◽  
Codling Moth ◽  
Glass Container ◽  
Laboratory Assessment ◽  
Lead Arsenate ◽  
Fruit Damage

The toxicity of naturally weathered deposits of 21 chemicals to larvae of the codling moth, Cydia pomonella (L.), was assessed by spraying apple trees in the orchard and testing samples of the fruit picked at various intervals after treatment. Each apple was placed in a separate glass container with one first-instar larva from a laboratory culture, and larval mortality and damage to the fruit (defined as removal of a portion of the skin) were recorded after three days in a constant environment.The site of entry of the larvae was shown to vary with fruit size, calyx entries decreasing and side entries increasing with increase in the surface area of the fruit.The relationship between larvicidal activity and age of the spray deposit for periods up to ten weeks after spraying is illustrated graphically; data are presented for fruit damage caused by larvae applied one and three weeks after spraying.On the basis of larval mortality and fruit damage recorded in tests on deposits up to three weeks after application, a spray containing 0·1 per cent, carbaryl was the most effective, followed by 0·05 per cent, fenthion, while Bayer 5024, Zectran, DDT, DDD (all at 0·l per cent.) and 0·04 per cent, azinphos (as the methyl or ethyl homologue) were only slightly less effective. Deposits from 0·1 per cent. Kepone, 0·02 per cent, diazinon, 0·11 per cent, malathion, 0·01 per cent, parathion and 0·05 per cent, carbophenothion, dimethoate and ethion also caused 90–100 per cent, mortality when fresh, but were less persistent. Fresh deposits from 0·1 per cent, endosulfan, 0·04 per cent, dioxathion, 0·05 per cent, phenkapton, 0·02 per cent, phosphamidon, 0·2 per cent, lead arsenate and 0·6 per cent, ryania only killed 50–88 per cent, of the larvae, and their residual toxicity was proportionately low.Heavy rain soon after spraying caused a large reduction in deposits from wettable powders but the accompanying reduction in larvicidal activity was shown to be greater in the case of carbaryl than for DDT or DDD.

Codling Moth Control with Lead Arsenate Substitutes

1937 ◽  
Vol 30 (1) ◽  
pp. 82-86
Author(s):  
S. W. Harman ◽  
T. W. Reed
Keyword(s):  
Codling Moth ◽  
Lead Arsenate

scholarly journals CARBOLIC ACID AS A PREVENTIVE OF INSECT RAVAGES

1881 ◽  
Vol 13 (9) ◽  
pp. 189-191
Author(s):  
A. J. Cook
Keyword(s):  
Codling Moth ◽  
Moth Larva ◽  
Established Fact ◽  
Carbolic Acid ◽  
Cabbage Maggot ◽  
One Year

One year ago I gave at the Boston meeting of the Association for the Advancement of Science the results of some experiments in the use of London purple to destroy the codling moth larva, and bisulphide of carbon in fighting the cabbage maggot and squash borer. These experiments have been repeated the present season, and with results no less favorable than those reported one year ago. I think it is an established fact that the methods recommended are valuable. They not only seem reliable, but they promise to be the cheapest and most desirable modes that can be made practicable on all occasions.

Lead Arsenate "Dynamite" Codling Moth Sprays in Pennsylvania*

1941 ◽  
Vol 34 (2) ◽  
pp. 256-263
Author(s):  
Harlan N. Worthley ◽  
Harold M. Steiner
Keyword(s):  
Codling Moth ◽  
Lead Arsenate
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