Issue link: http://read.dmtmag.com/i/466321
26 MARCH 1, 2015 GOOD FRUIT GROWER www.goodfruit.com Pest-Effective: • Season-long mating disruption • More starting active ingredient • 20% more pheromone released during the growing season Cost-Effective: • Season-long control with one application • Hand-application costs cut in half; no labor-intensive twist-ons • Minimal regulation • No harm to beneficial insects • No girdling losses Consistent, Season-Long Codling Moth Control NoMate ® CM Spiral is superior by design and performance for codling moth mating disruption in apple and pear orchards. No competing product goes on more easily, works harder, or gets better results. NoMate® CM Spiral is designed, manufactured, and supported in the United States by Scentry Biologicals, Inc., maker of the first pheromone-based product approved by the U.S. EPA. 610 Central Avenue Billings, MT 59102 (406) 248-5856 1-800-735-5323 www.scentry.com Slip-on NoMate® CM spirals consistently release volatilizing solid-matrix pheromone through flexible PVC dispensers. Female moth scent plumes are overwhelmed, thwarting male moth mating efforts. For more information, call 1-800-735-5323 or visit www.scentry.com. McDougall & Sons, Inc., in partnership with Columbia Marketing International, is the exclusive licensee of the PLANT IMPROVEMENT CO. LTD (PICO) to grow and market the Ambrosia™ apple variety in the United States. Under the terms of this exclusive agreement, all Ambrosia™ tree plantings and treestock propagation or topworking to Ambrosia™ in the U.S. for 2005 and forward is prohibited. For further information, please contact Tyler McDougall McDougall & Sons, Inc. 305 Olds Station Road Wenatchee, WA 98801 509-662-2136 ATTENTION AMBROSIA™ GROWERS Because mating disruption was found to work best in large areas, several area-wide programs were established. Also, using mating disruption under high codling moth population pressure required supplemental sprays. "Without access to Guthion (azinphos-methyl) in the early years of mating disruption, we wouldn't have had the success we did," said Thomson. Experience also taught growers to pay attention to abandoned orchards and bin sanitation, both of which could harbor codling moth larvae, and to stay off steep slopes because the terrain interfered with the pheromone plume. MATING DISRUPTION tips E ntomologists and the tree fruit industry have learned a thing or two in working with mating disruption to control codling moth during the last 20-plus years. Pacific BioControl's research and development director Donald Thomson summarized years of research and knowledge into the following take- home summary for growers: 1. Biology is important. Risk goes down when you have cold springs because codling moth popu- lations don't grow as fast as in warm springs when females lay more and stronger eggs. 2. Codling moths aggregate, creating hot spots. You need plenty of traps to really know what's hap- pening in your orchards, especially if populations are high. 3. Point sources are important when using hand-applied dispensers. The more dispensers the better—100 dispensers are better than 50, and 200 better than 100, though not twice as better, he said. "If you want optimum control, use as many dispensers as you can. And if you have high popu- lations, higher numbers of dispensers will give you better control." 4. Pay attention to borders. Moths congregate on borders and move inward, but pheromone con- centration is less on the edges, which sets up the orchard for mating and damage on border edges. The outside four rows need sprays or hand applied dispensers. 5. Be aware of high wind speed in new, high- density plantings. High winds can blow pheromone out. In windy regions, it may be better to use hand- applied dispensers to prevent movement of aerosol pheromone out of the orchard. 6. Aim to manage codling moth populations to keep fruit damage to zero. —M. Hansen