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Lethbridge Herald Newspaper Archives

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Lethbridge Herald, The (Newspaper) - June 13, 1972, Lethbridge, Alberta 14 LSTHWWGt HBIAIO Attention Sugar Beet Growers! 149 Slafford D.Sve IfTHBRIDGF, ALBERTA Phone 327-1571 o. CONTAC, Protect your trops from WE8WORM and other insect pests, with Dyiox 80% Soluble Powder A selective insecticide that; Does not destroy beneficial insect popula- tions, when used as recommended Can I roll a wide range of injurious (including Webworm) ll economical natural con- trol factors AVAILABLE NOW AT YOU 803 -46th Ave S t. CALGARY. ALBER1A Phone M3-SSS1 OLIVER DEALER" GUTHiON SPRAY CONCENTRATE CROP INSECTICIDE for prelection against the COLORADO POTATO BEETLE Gulhron iptay concentrate ii used effectively to control Flea Beetles in tope crops and the Colorado Potato Beetle in pofntoei. Applied at a rate of Imp. pint per acre in suf- ficient water to cover. AVAILABLE NOW AT 249 Stafford Diive LETHBRIDGE. ALBERTA Pl.onc 327-1571 803 Ave 5 E. CALGARY, ALBERTA Phone OR CONTACT THE OLIVER DEALER" YOU SPECIALIST SlY! CHECKERED FLAG DECALS WITH EVERY PURCHASE. Colourful 5" x 2" Dunlop Two Free with every purchase. DUNIOP For Nils month only, these big, wide, strong "60" AND "70" SERIES PERFORMANCE TIRES Bra going al special prices. Dunlop G.T. Quallfier-the "60" Series designed specially for muscle cars... For twinbelt construction, and low, ground-gripping profile. For good a wide track stance and raised white letters, IF YOU WANT PERFORMANCE TIRES.. WE THEM NOW AT SPECIAL LOW- PROFILE PRICES. Confused about tires? Ask far Dunlop's Frsd "Tire booklet. GREAT WEST TIRE LTD Insects assist science By DR. 0. E. SWA1I.ES hln irlge Research Station Entomologisls f r e q u e n tty need targe numbers of insects to enable them to study tlwir biology D n (1 develop methods for their control. In recent years the search for biological control methods and the need for testing new insecticides have greatly increased tlw neect for supplies of insects. Certain methods of biological control of insects require large numbers of tlie pest species to available for release. Those insects are specially treated so that they interfere with the de- velopment of naturally occur- ring insects of the same spe- cies. Occasionally, insects are needed for the extraction of va- riotis chemicals such as hor- mones, small quantities of which can be used to control the behavior pattern of in- sects. Thousands of insects aro needed to produce sufficient quantities of. the chemicals to permit their identification. Large numbers of insects are needed for testing insecticides in the laboratory at a wide range of rates and formulation tinder controlled conditions. The rearing of insects in the laboratory has become a sig- nificant part of research. Year- round rearing produces four or five generations a year as com- pared to one or two in the field. A continuous supply of insects reared in controlled conditions results in a uniformity that is difficult, if not impossible, to obtain in field collections. Mass rearing of insects in tho laboratory lias become a major concern at the Lethbridge Tie- search Station for three species of cutwo'rm. Lettuce and sprouted wheat are excellent foods but tlicir growth requires extensive greenhouse space and considerable care. These foods must be fed fresh every second or third day. In our search for an nrtifical diet that would obviate the need for freshly grown food we have able to provide one that includes the nutrients to satisfy the major portion of the feeding period. The newly hatched larvae are first fed on lettuce and confined individually with enough artificial diet to com- plete their larval development. They require no further atten- tion until the pupae are re- moved about six weeks later. With the use of the artificial diet we have been able to rear up to 50 per cent of some cut- worms in the laboratory. Fur- ther improvement looks prom- ising. With a ready supply of cutworms at any stage of de- velopment, new approaches to control methods arc enhanced. TABER FROZEN FOODS ITD. TABER Phone 223-2633 8ETAU AND WHOLESALE MEATS PROCESSING (in aluminum foil) anil CURING CUSTOM SLAUGHTERING TUESDAYS thru FRIDAYS SVHtY WEEK ;