C6-Lancaster Firming, Saturday, February 6, 1988 Triaxine-Resistant Weeds Becoming #1 Pest t, Many fanners remember when a pound of atrazine herbicide con trolled all the weeds in a com field. Those days are gone. A new group of super weeds, resistant to triazine herbicides, has emerged as the No. 1 pest problem facing far mers today. Over the past decade, triazine resistant weeds have spread from com fields throughout the Great Lake and mid-Atlantic states. The broadleaf weeds lambsquarters and pigweed are most prevalent but at least one case of triazine resistant velvetleaf is confirmed in Maryland. Documented infestations of triazine-resistant weeds cover an estimated 123,500 crop acres in Maryland alone. Resistant lambs quarters and/or pigweed also are found in 20 counties of New York and at least 20 counties of Pennsyl vania. All counties of Delaware A LESSON WELL LEARNED... LANCASTER FARMING'S CLASSIFIED ADS GET RESULTS! Phone: 717-394-3047 or 717-626-1164 BARGAINS MONTH | K FVRIMETICS lIMC. Model 0905 Advance Design Battery Operated Smoke Alarm Reg. $9.99 SPECIAL $6.95 Hours; Daily 7 AM to 5 PM Sal. 7 AM to 12 Noon and 41 Virginia counties have recorded triazine-resistant broad leaf weeds. Triazine-resistant weeds are probably present, without being documented, on many more farms, says Russ Hahn, Ph. D., Extension weed scientist, Cornell University. “Farmers must accept the fact that their weed control practices have to change in order to control triazine-resistant weeds,” he says. “And once they implement a prog ram that works, farmers must con tinue using the new program for several years.” The triazine family includes atrazine (AAtrex®, Atranex®, Griffex®), simazine (Princep®, Simanex®), cyanazine (Bladex®) and metribuzine (Sencor®, Lexone®). “Prevention is the key to stop ping the spread of triazine- /V\ MUSSELMAN | LUMBER INC. 2CX) BRIMMER AVENUE NEW HOLLAND PA resistant weeds,” says Ron Ritter, Ph.D., University of Maryland, Extension weed scientist. “Tria- zine herbicides shouldn’t be used year after year and weed escapes should be controlled through culti vation and/or herbicides having a different mode of action than the triazines.” Resistance to triazine herbicides develops through the genetic pro cess of natural selection, explains Sandoz product development spe cialist William O’Neal. “Triazine-resistant weed biotypes have always been pre sent,” says O’Neal. “They just didn’t become numerous until her bicides killed off susceptible, non resistant biotypes. Now weed spe cies that were once susceptible to triazines at labeled rates can with stand 10 to 30 times recommended rates.” “Normally, triazine herbicides kill weeds by bonding to the plant’s chloroplast membrane and preventing photosynthesis,” O’Neal explains. “In resistant weeds, a chemical change in this membrane structure alters triazine bonding, so treated plants continue to grow.” Pesticide resistance is not a new FEBRUARY UL 217 listed Dual ionization chambers senses and alarms early. Resists false alarms Solid state circuit ry for stability and low power consumption Uses a 9 volt battery and has a low battery indicator. Equipped with test button to test circuitry, horn and low battery Easy to install Phone; '-354-432 1 71 phenomena. Many instances exist of insect and fungi developing resistance to commonly used (Continued from Page C 5) '/j cup whole-wheat flour 2 tablespoons all-purpose flour 1 teaspoon cinnamon 3 tablespoons butter or margarine Garnish: Whipped cream (optional) Place crust in microwave-safe 9-inch pie plate. Brush crust top edges with vanilla. Prick crust bot tom and edges well. Microwave (High) 2'A to 4 minutes or until surface is no longer shiny, rotating plate as necessary for even cook ing. Pour cherry pie filling into crust; set aside. Combine flours and cinnamon; cut in butter with fork or pastry blender until crumbly. Sprinkle over cherry pie filling. Microwave (High), uncovered, 6 to 8 minutes or until top in bubbly towards cen ter. Cool completely or chill before serving. Top with whipped cream ddin Our Bes 3 > He % An Ceramii • 5 YR. Cmrmormtta*, WARRANTY • USES 110 AC CURRENT • QUIET POWERFUL FAN • COOL TO THE TOUCH • HEATS A LARGE ROOM Fits in palm of han JTSJJ Reg. 1 LEOLA KEROSE 93 W. Main Si, Uola, PA Mon. thru Fri. 9 to ' 1 — 800 — 252-4900 ' p&(* PERKA BUILDINGS WINTER SALE Perka Is: • Large Enougl You 8 Buildi • Personal Enoi To Work W And/Or You: Contractor. PERKA has the building to satisfy your needs. Call In N.J.; (609) 267-5571 Out of State: (800) 338-5094 Or Write (Dealer Inquiries Invited) Engineer Stamped & Certified 40/20 Year Warranty • Energy Advantages j • A Permanent Investment ' l • 12 Colors I • Steel Trusses And Wood Other I i Or Steel Girts & Purlins. lfi Serving NJ, PA, DEL, MD f PERKA BUILDINGS, Eastern Div. * I RR2, Box 29, Warner Rd. ( ■ ) 1 I Columbus, NJ 08022 I * | “»■"« -— . ! r.n,iMy Totaphono No__—Postal Cod* I am jntsroalod In the following typo of building Width Lingti Sin of Dow— Implomont Shod Dairy Hog I Workihop Loooo Housing Stabl* I Industrial Comnarcial Riding Anna | Dal* of Banning To BuH L. MICROWAVE MINUTES if desired. Makes 6 to 8 servings. Each serving- '/• of pie: 256 calories, 3g protein, 12g fat, 36g carbohydrate, 156 mg sodium, 13mg cholesterol. Questions for Joyce? Do you have a question about microwave cooking? Send it to Microwave Minutes, % Extra Newspaper Features, P.O. Box 6118, Rochester, MN 55903. Please include a self-addressed, stamped, business-size envelope. Recipes in this column are tested in 600- and 650-watt micro wave ovens. With an oven of diff erent wattage output, timings may need slight adjustment. Joyce Battcher is an indepen dent home economist microwave specialist. She is author of “Microwave Family Favorites” and editor of “A Batch of Ideas” newsletter. chemicals. Today, 43 plant species worldwide are documented as resistant to triazine herbicides. ©l9BB Extra Newspaper Features I iP 5000 COMMERCIAL INDUSTRIAL AGRICULTURAL
Significant historical Pennsylvania newspapers