CONTROL OF THE ONION MAGGOT, HYLEMYA ANTIQUA (MEIG.) (DIPTERA: ANTHOMYIIDAE), WITH INSECTICIDES IN ORGANIC SOILS OF SOUTHWESTERN QUEBEC

1960 ◽  
Vol 40 (1) ◽  
pp. 156-159 ◽  
Author(s):  
J. P. Perron ◽  
J. Lafrance
Keyword(s):  
Plant Growth ◽  
Surface Treatment ◽  
Seed Treatment ◽  
Soil Surface ◽  
Surface Treatments ◽  
Organic Soils ◽  
Onion Maggot ◽  
Hylemya Antiqua ◽  
Onion Seed ◽  
Stimulate Plant Growth

In organic soils of southwestern Quebec from 1955 to 1958, dieldrin heptachlor and endrin wettable powders mixed at the rate of 1 ounce of toxicant per pound of onion seed applied for the control of the onion maggot, Hylemya antiqua (Meig.) were highly effective. The heptachlor treatment appeared to stimulate plant growth. Toxaphene as seed treatment was poor, while di-syston also as seed treatment was effective but reduced germination by one-third. A soil surface treatment with chlordane dust at 4.5 pounds of toxicant per acre gave also a fair control where seed had not been treated. Combinations of dieldrin or DDT seed treatments with chlordane or aldrin soil surface treatments when plants averaged 2 inches high were not more effective than a seed treatment alone.

FURTHER EXPERIMENTS ON CONTROL OF THE ONION MAGGOT, HYLEMYA ANTIQUA (MG.), IN THE INTERIOR OF BRITISH COLUMBIA

1957 ◽  
Vol 37 (3) ◽  
pp. 252-258 ◽  
Author(s):  
D. G. Finlayson
Keyword(s):  
British Columbia ◽  
Seed Treatment ◽  
Good Control ◽  
Soil Surface ◽  
Effective Control ◽  
Onion Maggot ◽  
Hylemya Antiqua ◽  
Wettable Powder ◽  
Degree Of Damage ◽  
High Yields

Experiments at two localities in the interior of British Columbia in 1952 and 1953 showed that a seed treatment of dieldrin at 0.5 oz. per pound of seed gave as good control of the onion maggot as any other treatment, was not phytotoxic, and gave the highest yield of marketable onions each year. Lindane, 25 per cent wettable powder, applied three times at 10-day intervals to the soil surface at 1 lb. of toxicant per acre per application gave consistently good control and high yields, but was more expensive in both labour and materials. Calomel at 1 lb. per pound of seed gave satisfactory control in a light infestation but cost twenty times as much as dieldrin. DDT at 8 oz. per pound of seed gave effective control but the bulk of insecticide on the seed caused jamming of the seeder. When the amount of DDT was reduced the degree of damage increased. Lindane as a seed treatment at 1 oz. per pound of seed was extremely phytotoxic. The same amount of aldrin applied in a similar manner was phytotoxic but to a lesser degree.

ORGANOPHOSPHATE COMPOUNDS FOR THE CONTROL OF THE ONION MAGGOT, HYLEMYA ANTIQUA (MEIGEN) (DIPTERA: ANTHOMYIIDAE) RESISTANT TO CYCLODIENE INSECTICIDES IN SOUTHWESTERN QUEBEC

1962 ◽  
Vol 42 (4) ◽  
pp. 616-619 ◽  
Author(s):  
J. P. Perron ◽  
J. Lafrance
Keyword(s):  
Seed Treatment ◽  
Water Soluble ◽  
Organic Soils ◽  
Seed Treatments ◽  
Poor Control ◽  
Onion Maggot ◽  
Hylemya Antiqua ◽  
Organophosphate Compounds ◽  
Wettable Powder ◽  
Cyclodiene Insecticides

Diazinon and V-C-13 granular formulations, applied as furrow treatments at the rate of 1 and 2 pounds toxicant per acre, and diazinon wettable powder as seed treatment at [Formula: see text] ounces toxicant per pound of seed, effectively controlled populations of the onion maggot, Hylemya antiqua (Meigen) resistant to cyclodiene insecticides in southwestern Quebec, in both mineral and organic soils. EN 18133 granular formulation was also very effective but caused a slight delay in germination without, however, affecting the stand or decreasing the yield to any extent. Ethion, Trithion and Guthion granular formulations as furrow treatments at either 1 or 2 pounds toxicant per acre, and also as wettable powder seed treatments at the rate of 1 ounce toxicant per pound of seed, were significantly inferior to Diazinon, V-C-13 and EN 18133. Dylox water soluble powder, applied as a drench post-emergence treatment at 4 pounds toxicant per acre, gave poor control.

Timing Soil-surface Applications of Chlordane Dust Against the Onion Maggot, Hylemya antiqua (Meig.) (Anthomyiidae: Diptera), in Onion Seedlings

1958 ◽  
Vol 90 (3) ◽  
pp. 176-178 ◽  
Author(s):  
J. P. Perron ◽  
J. Lafrance ◽  
M. Hudon
Keyword(s):  
Soil Surface ◽  
Poor Control ◽  
Onion Maggot ◽  
Hylemya Antiqua ◽  
Application Program

Several Canadian workers have reported various results in the control of the onion maggot, Hylemya antiqua (Meig.), with chemicals applied to the soil surface (Dustan, 1938; Matthewman et al., 1942; McLeod, 1946; Perron et al., 1953; Finlayson and Handford, 1954). In these tests, the date of the first application of insecticide coincided with early oviposition of the insect, the second and third applications following at weekly or ten-day intervals. Satisfactory control was therefore dependent to a great extent on the grower's ability to recognize the beginning of oviposition by the pest in the field. However, many growers find this recognition difficult and poor control often results from the three-application program.

Notes on Life-History of the Onion Maggot, Hylemya antiqua (Meig.) (Diptera: Anthomyiidae), in Sandy and Organic Soils

1959 ◽  
Vol 91 (10) ◽  
pp. 633-638 ◽  
Author(s):  
J. Lafrance ◽  
J. P. Perron
Keyword(s):  
Life History ◽  
Air Temperature ◽  
Organic Soils ◽  
Field Observations ◽  
Onion Maggot ◽  
Hylemya Antiqua ◽  
Temperature And Precipitation ◽  
History Of ◽  
The Relationship

This is a report on field observations and experiments on the life-history of the onion maggot, Hylemya antiqua (Meig.), conducted from 1955 to 1958 in sandy and organic soils of southwestern Quebec. The dates of emergence of adults, the number of generations, the percentage of pupae entering diapause in each generation, and the relationship between diapause, air temperature, and precipitation were recorded.

scholarly journals Effect of surface treatments on push-out bond strength of calcium silicate-based cements to fiber posts

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Amr M. Elnaghy ◽  
Ayman Mandorah ◽  
Ali H. Hassan ◽  
Alaa Elshazli ◽  
Shaymaa Elsaka
Keyword(s):  
Bond Strength ◽  
Surface Treatment ◽  
Glass Fiber ◽  
Calcium Silicate ◽  
Surface Treatments ◽  
The Other ◽  
Fiber Posts ◽  
Glass Fiber Posts ◽  
Push Out ◽  
Effect Of Surface

Abstract Background To evaluate the effect of surface treatments on the push-out bond strength of Biodentine (BD) and white mineral trioxide aggregate (WMTA) to fiber posts. Methods Two brands of fiber posts were used: Reblida post; RP and RelyX post; RX. Each type of post (n = 80/group) was divided into four groups (n = 20/group) and exposed to surface treatment as follows: Control (no treatment), sandblasting (SB), hydrofluoric acid (HF), and TiF4 4 wt/v%. Each group was further subdivided into two subgroups (n = 10/subgroup) based on the type of CSCs used as follows: Subgroup A: BD and Subgroup B: WMTA. Push-out bond strength of BD and WMTA to glass fiber posts was assessed. Data were statistically analyzed using three-way ANOVA and Tukey’s test. A Weibull analysis was performed on the push-out bond strength data. Results BD showed higher bond strength than WMTA (P < 0.001). The push-out bond strength for posts treated with TiF4 4 wt/v% showed greater bond strength than the other surface treatments (P < 0.05). The BD/RP-TiF4 4 wt/v% showed the greater characteristic bond strength (σ0) (15.93) compared with the other groups. Surface treatments modified the surface topography of glass fiber posts. Conclusions The BD/RP-TiF4 4 wt/v% showed greater bond strength compared with the other groups. The TiF4 4 wt/v% surface treatment enhanced the bond strength of BD and WMTA to glass fiber posts than the other treatments. Surface treatment of fiber post with TiF4 4 wt/v% could be used to improve the bond strength with calcium silicate-based cements.

A SIMPLE TECHNIQUE FOR MASS-REARING THE ONION MAGGOT (DIPTERA: ANTHOMYIIDAE) ON AN ARTIFICIAL DIET

1970 ◽  
Vol 102 (12) ◽  
pp. 1554-1558 ◽  
Author(s):  
W. R. Allen ◽  
W. L. Askew
Keyword(s):  
Artificial Diet ◽  
Simple Technique ◽  
Adult Emergence ◽  
Mass Rearing ◽  
Cellulose Powder ◽  
Egg Hatch ◽  
Wheat Embryo ◽  
Onion Maggot ◽  
Hylemya Antiqua ◽  
Yeast Hydrolysate

AbstractA gelatine-based diet for rearing the onion maggot, Hylemya antiqua (Meigen), that contains sucrose, evaporated milk, yeast hydrolysate, wheat embryo, cellulose powder, n-propyl disulfide, water, and antibiotics is described. Three consecutive generations reared on this medium were equal in puparial weights, percentages of pupation, adult emergence, and egg hatch, to those reared on onion bulbs. The procedure is simple and two man-hours per week is sufficient for producing 1000 maggots daily.

A Note on a Dipterous Predator of the Onion Maggot, Hylemya antiqua (Meig.)

1952 ◽  
Vol 84 (4) ◽  
pp. 112-112 ◽  
Author(s):  
J. P. Perron ◽  
J. Lafrance
Keyword(s):  
Life History ◽  
Onion Maggot ◽  
Hylemya Antiqua ◽  
History Of

In investigations on the life-history of the onion maggot at St. Jean, Que., in 1951, a few specimens of a dipterous predator were found in the rearing cages in the laboratory. They were feeding voraciously on the adults, destroying a colony of nearly 300 flies within two weeks.Specimens were identified by Mr. A. R. Brooks, Systematic Entomology, Division of Entomology, Saskatoon, Sask., as Coenosia tigrina (F.). Mr. G. E. Shewell, Systematic Entomology, Division of Entomology, Ottawa, has stated that nothing is known in Canada about the life-history of this species, but that it is apparently well known as a predator in Europe and that B. M. Hobby has published a long list of species on which it preys, including many anthomyiids.

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