Issue link: https://read.dmtmag.com/i/473131
www.goodfruit.com GOOD FRUIT GROWER MARCH 15, 2015 25 © 2015, Trécé Inc., Adair, OK USA • TRECE, PHEROCON and CIDETRAK are registered trademarks of Trece, Inc., Adair, OK USA TRE-0691, 1/15 PLEASE: ALWAYS READ THE LABEL 32 MESOS/ACRE = SUPERIOR MATING DISRUPTION The ONLY Mating Disruption System for both MALE… and FEMALE Codling Moth INSEC T PHEROMONE & KAIROMONE SYSTEMS INCORPORATED ® Your Edge – And Ours – Is Knowledge. CIDETRAK ® CMDA COMBO ™ MESO ™ contains a unique combination of Codling Moth pheromone AND a patented male AND female behavior modifying kairomone called DA. Designed to deliver long-lasting performance with remarkably fast application at 32 MESOS/ACRE. • What it does: Disrupts oviposition, reduces mating, maintains higher virginity and lowers damage. • How to use it: Ready-to-use package, ready-to-hang dispensers. • Longevity: Long-lasting full season performance. CIDETRAK ® CMDA COMBO ™ MESO ™ dispenser in use at 32 MESOS/ACRE. T R E C E T E C H N O L O G Y ´ ´ WSDA ORGANICALLY APPROVED! Contact your local supplier and order now. Visit our website: www.trece.com or call 1- 866 -785-1313. Grula also sampled bee populations in areas near the surveyed crops that had fl owering plants, undisturbed habitat, and open water. Two party cups of each color were placed in each site on a weekly basis from May through August. Bees were collected in a 24-hour period. Grula used a total of 1,590 traps in her sampling. WSU's Dr. Richard Zack, director of the M. T. James Entomological Collection in Pullman, identifi ed the bee species. Bee species Bees from three insect families were caught in the traps—Apidae (European honeybees), Halictidae, and Megachilidae. Native bee species in the Halictidae family that were collected included the metallic-green sweat bee (Agapostemon), the alkali bee (Nomia melanderi), another sweat bee (Halictus farinosus), and the alfalfa leafcutting bee (Megachile rotundata). The alfalfa leaf- cutting bee is an important pollinator of alfalfa seed in Washington. Native species are solitary dwellers and build nests in the ground or in cavities. Preliminary results of the trapping show that bees in the Apidae family were most commonly found in blue- berries, riparian areas, and hops, with very few trapped in Concord or wine grape vineyards. "It's not surprising that honeybees were found in blueberries because growers put hives in blueberry fi elds to help with pollination," Walsh said. He added that fl ow- ering weeds growing at the base of hop plants appeared to be the reason Apidae honeybees were attracted to the hop fi elds. Megachilidae were the most prevalent species in riparian areas. Across all sites, species in the Halictidae family were the most prevalent. Data from the one-year survey showed that Concord and wine grapes are poor habitat for all bee types, Walsh said. Honeybees were observed visiting drip emitters and puddled water in several of the cropping systems that were surveyed. Walsh suggested that to reduce potential impact on bee populations from neonicotinoid insecti- cides applied in the drip system, chemigation could be done at night when bees aren't active. "The good news for grape growers is that insecticides applied to vineyards will have minimal impact on extant bee populations," he concluded. Although Walsh plans to repeat the pollinator research this season, he believes the survey provides the Washington grape industry with strong data to show that growers are not harming pollinators with current pest control practices. • "Insecticides applied to vineyards will have minimal impact on extant bee populations." —Doug Walsh