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Lethbridge Herald Newspaper Archives

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Lethbridge Herald, The (Newspaper) - May 29, 1973, Lethbridge, Alberta 16 THE LETHBRIDGE HERALD Tuesday, May 29, Sugar beet growers plan maggot fight By C. E. LILLY Entomologist Letlibridge Research Station Sugar beet growers must de- cide prior to planting whether or not to treat for sugar beet root maggots. The maggot population in Southern Alberta has been on the increase since 1968, especi- ally on light to medium sandy soils. If noticeable damage was evident in 1972 and the 1973 crop is to be planted nearby, the adult flies, which emerge in late May, can be expected to fly to the young beets and lay their eggs. Under conditions such as these the beets should be planted early and treated with in-furrow bands of Insecti- cide on each side of the rows of plants. Studies at the Lethbridge Re- search Station have shown that the insecticides carbohiran at three quarters of a pound of trithion at one pound of active ingredient per acre give good control of the sugar beet root maggots. These insecticides can Saturday, June -10 a.m. PERLKH BROS. AUCTION MARKET LTD. Located 3 miles east and 14 mile south of LETHBRIDGE Expected listings of: Tractors, Trucks, Combines, Swaihers, Drills, All types of Tillage Machinery, Irrigation Equipment, Haying Equipment, Etc., Etc., Etc. Early listings are invited We are expecting local and out-of-area buyers For further information contact TONY VIRGINILLO at 345-4291 if SPECIAL if FT. OF LUMBFR VARIOUS DIMENSIONS PERUCH BROS. AUCTION MARKET LTD. 3 MILES EAST OF LETHBRIDGE ON HIGHWAY 3 AND Vt MILE SOUTH Phone 328-3951 Box 1057, Lethbridge For all your HYDRAULIC NEEDS look to OLIVER INDUSTRIAL SUPPLY LTD. "YOUR HYDRAULIC SUPPLY CENTRE" Available from 1 source... HYDRAULIC HOSE, FITTINGS, COUPLERS, ADAPTERS, CYL- INDERS, VALVES, PUMPS, and MOTORS. For complete details contact OLIVER INDUSTRIAL SUPPLY LTD. 236 36th Street North Lethbridge, Phone 327-1571 803 46th Ave. S.E Calgary, Alta. Phone 243-5551 or the "OLIVER DEALER" nearest you. be effectively applied in the rows simultaneously with the herbicide Roueet-Ayadex. Once beets are infested It is too late to control the mag- got. The flies lay their eggs in clusters of 10 to 20 in the soil close to the small beets, and sometimes as many as 60 or more maggots will feed on a single plant. The damage caused by the root maggots first appears at thinning time or shortly there- after. Leaves of the infested plants wilt badly during warm days and many plants die if the infestation is severe. All that can be done to alleviate this sit- uation is to irrigate heavily. Beet growers should leave an untreated strip of beets within then- stand each year and check it during the growing season for maggot damage. If damage remains low in the untreated strip, the grower can probably raise beets in adjacent fields the following year without the protection of insecticides. Similarly, a strip of treated beets planted within an un- treated stand will indicate the level of maggot population with- in the district and the value of treating a subsequent beet crop. Observations on such check strips could eliminate the auto- matic use of insecticides as an insurance measure each year. This would reduce the hazard of insecticide residue accumulation and minimize the risk of producing maggots that are resistant to the insecticide used. Rather than treating each year, it is better to rely on early seeding, adequate fertiliz- ation, timely irrigation, and nat- ural controls. The use of insec- ticides could then be restricted to those years when they are absolutely necessary. PRF SUMMER SALE and lengths. Assorted shades, styles including leathers. Sizes from 10-42. All Weather Reg. to and Reg. lo 60.00 and up (Leather) Reg. to 95.00 59.98 SUMMER DRESSES MANY BEAUTIFUL SPRING and SUMMER STYLES BY LEADING MANUFACTURERS. Long sleeves Short sleeves Sleeveless Sizes 12-52 Reg. to 24.00 Reg. to 32.00 MODERN FASHION SHOP 618 3rd AVE. 5. PHONE 327-3039 ;