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Lethbridge Herald Newspaper Archives

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Lethbridge Herald, The (Newspaper) - September 5, 1972, Lethbridge, Alberta September 5, 1972 THE LETHBRIOGE HEKALD Insecticides only protection for some pests By OH. NEIL HOLMES Research Station Insecticides provide the only protection for crops against most insect pests. We know that insecticides can cause se- rious environmental problems. Beneficial insects can be killed and new insect problems cre- ated. Nevertheless, when properly used, insecticides are more beneficial than harmful. The savings in life, food, and fiber provide impressive evidence of this fact. Despiie their benefits, in- secticides cannot be considered to provide permanent controls of insect attacks. Most of those we recommended in the early 1960s are not recommended now. Insects have developed resistance to some of them. Continued use of other insecti- cides has brought to light un- expected drawbacks. In Canada we are directly af- fected by over different species of insects. About GOO of them attack crops and about five new species appear each year. Any one species can appear In tremendous numbers without warning. T5ie Bertha army worm whdch had been largely unno- ticed in 1970, made its appear- ance on almost one million acres of rapeseed in numbers H> to 400 per square yard in 1971. Over 16 species of Insects appeared as pests when rape- Beed became a major crop. Research into non-chemical controls for insects has been re- stricted by limited resources to the insect species that are usually the most prominent. The only short term solution for dealing with sudden out- breaks is provided by tlie use of insecticides. At the Lethbridge Research Station we arc developing sex attractanfs as a means of fore- casting outbreaks and to pro- vide possible new controls. We are studying losses caused by insects so that we can deter- mine when ond if controls are required. We are testing new insecticides for their effective- ness and determining the levels of residues left after they are applied. We are work- ing on host plant resistance and on the possibility of mod- ifying host plants so that they are nutritionally unsuitable for insect pests. We are beginning studies on possible effects of the commonly used insecticides on the environment. Those that object to use of insecticides suggest that non-chemical controls be used instead. In- most cases such al- ternatives do not exist; in oth- ers it will still be some time before nllernat i v e s become available. In tlie meantime we have to weigh the benefits of insceti- FOR COMPLETE BOOK PUBLISHING CONTACT The Uthbrulge Herald PRINTING AND LITHOGRAPHY DIVISION PHONE 327-3203 or 328-441! cides against their possible hazards to man and the en- vironment. The decision on wheatber or not lo use them requires the application ot all the knowledge at hand. The ap- proach to the destruction of in- sects by using chemicals with- out considering the conse- quences is no.worse than the one that instinctively regards insecticide use without merit HOMES Investment ge tor pfons. Choose from 64 time-tested, space saving interior plans, and 250 exterfor finishes. Then build your own home, or let Revelstoke arrange for building a competitive rates. Either way, you con have the home of your dreams with a Revy mortgage plan financing up to 90% of the cost. FHE CHINOOK features three bedrooms, a bath and a half, sunken living room, family sun deck and Jwo-oar garage. Total package price 40'x42'x28' sq. ft. Isn't it time you looked into Revy Homes, package plans? The Revelstake store manager nearest you has all the details. Give him a call, or if you'd like to discuss your needs in privacy of your home, clip and mail this coupon for an appointment with a Revy Homes consultant. REVELSTOKE COMPANIES LTD. IETHBRIDGE _ ERVIN BUCK, Mgr. _ 327-5777 NANTON JOE Mgr. 486-2032 PICTURE BUTTE JIM KULKA, Mgr. 732-4412 TABER VMYNE HOISTINE, Mgr. 223-2424 VAUXHALL _ MARVIN Mgr. _ 654-2477 VUICAN DICK HAMMER, Mgr. 485-2037 o division 01 REVELSTOKE COMPANIES LTD, P.O. BOX 2501, CALGARY 2, ALBERTA Yes, I am interested tn Revy Homes, Tell me more. PLEASE SEND FREE LITERATURE ON BEDROOM HOMES O 4 B BEDROOM HOMES 2 BEDROOM HOMES AND HAVE YOUR SALESMAN CALL ;