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Articles 1 - 29 of 29
Full-Text Articles in Agriculture
Plum Curculio (Conotrachelus Nenuphar), Kate V. Richardson, Marion Murray
Plum Curculio (Conotrachelus Nenuphar), Kate V. Richardson, Marion Murray
All Current Publications
Plum curculio is a brown weevil (beetle with a snout) native to eastern North America, where it is a major pest of pome and stone fruits. It was detected in Box Elder County, Utah, in the early 1980s, and this population remains the only known infestation in western North America, where it is occasionally found in residential and wild fruit trees. Plum curculio is a quarantine pest in western North America (U.S. and Canada), and fruit grown in infested counties is restricted from being exported. Thus, it is a threat to Utah’s fruit industry and requires ongoing monitoring and management …
Surveying And Evaluating Pests And Beneficial Insects In Utah's Vegetable Production, Nick Volesky, Amelia Olds, Marion Murray
Surveying And Evaluating Pests And Beneficial Insects In Utah's Vegetable Production, Nick Volesky, Amelia Olds, Marion Murray
All Current Publications
The Utah State University (USU) Extension Integrated Pest Management (IPM) program conducted a season-long survey evaluating arthropod pests, plant diseases, pollinators, and other beneficials on a ¼-acre vegetable farm and adjacent pollinator habitat located in Logan, Utah. Understanding the roles of these groups on plant health and the efficacy of nonchemical pest management approaches critically impacts the sustainability of Utah’s vegetable industry. Survey findings have been used as a reference for developing video content, fact sheets, and presentations to educate Utah’s commercial and small-acreage farmers.
Poplar Borer, Marion Murray, Ryan Davis
Poplar Borer, Marion Murray, Ryan Davis
All Current Publications
The poplar borer is the most commonly submitted wood borer found in aspens and other poplars in Utah. While large trees are seldom killed by this pest, it can cause the decline of trees, weakening of branches or the bole (which promotes wind breakage), and allows the introduction of pathogens. This fact sheet describes poplar borer life cycle, damage, and control.
Poplar Bud Gall Mite, Marion Murray, Ryan Davis
Poplar Bud Gall Mite, Marion Murray, Ryan Davis
All Current Publications
The poplar bud gall mite belongs to the eriophyid mite family. These mites are microscopic and about one-fourth the size of a spider mite. Adults are about 0.2 mm in length, reddish, and spindle-shaped. This fact sheet reviews poplar bud gall mite biology and habits, damage, and control.
Boxelder Leafroller, Marion Murray, Ryan Davis
Boxelder Leafroller, Marion Murray, Ryan Davis
All Current Publications
The boxelder leafroller, Archips negundana, is a pest of boxelder and other trees and shrubs in parts of the United States and Canada and is commonly found in Utah. Boxelder is the primary host, but damage can also occur on raspberry, birch, elderberry, white elm, and various shrubs.This fact sheet provides information on the boxelder leafroller's life cycle, symptoms of damage, and control methods.
Balsam Woolly Adelgid, Liz Rideout, Kate V. Richardson, Diane G. Alston, Ryan Davis, Darren Mcavoy, Lori R. Spears, Danielle Malesky, Liz Herbertson, Colleen Keyes
Balsam Woolly Adelgid, Liz Rideout, Kate V. Richardson, Diane G. Alston, Ryan Davis, Darren Mcavoy, Lori R. Spears, Danielle Malesky, Liz Herbertson, Colleen Keyes
All Current Publications
This fact sheet describes balsam woolly adelgid, a tiny sucking insect that is a serious pest of true firs in forests, landscapes, and in seed and Christmas tree production. It includes a description of tree injury and symptoms, life history and identification, monitoring, management, and implications to forest health.
Parasitoid Wasps Of The Invasive Brown Marmorated Stink Bug In Utah, Zachary R. Schumm, Kate V. Richardson, Mark Cody Holthouse, Yota Mizuno, Diane G. Alston, Lori R. Spears
Parasitoid Wasps Of The Invasive Brown Marmorated Stink Bug In Utah, Zachary R. Schumm, Kate V. Richardson, Mark Cody Holthouse, Yota Mizuno, Diane G. Alston, Lori R. Spears
All Current Publications
The brown marmorated stink bug (BMSB, Halyomorpha halys Stål), an invasive insect from eastern Asia, is causing nuisance problems and agricultural damage in northern Utah. Insecticide applications to control this pest are not sustainable, and therefore the focus is on biological control through the use of parasitoid wasps that sting and kill stink bug eggs. Surveys are underway in Utah to search for Samurai wasp (Trissolcus Japonicus [Ashmead]), a parasitoid wasp native to BMSB’s home range that has been found in 12 U.S. States, and is highly effective at killing BMSB eggs. While Samurai wasp has not been found, …
Pests Of Hemp In Utah, Marion Murray, Macahl Evans, Claudia Nischwitz, Austin Taylor, Cody Zesiger
Pests Of Hemp In Utah, Marion Murray, Macahl Evans, Claudia Nischwitz, Austin Taylor, Cody Zesiger
All Current Publications
This guide includes information on insect and disease pests of hemp, organized by pest group. Much of the content is a result of a two-year arthropod and plant disease survey of field-grown hemp operations in northern Utah. Some pests included in this guide were not found in that survey but may be likely to occur in the future. Beneficials and natural enemies are also covered, and information on pesticides is included.
Sap Beetles, Nick Volesky, Zachery R. Schrumm, Kalen Taylor
Sap Beetles, Nick Volesky, Zachery R. Schrumm, Kalen Taylor
All Current Publications
Sap beetles are typically considered a secondary pest of corn and overripe fruits and vegetables. They are broadly identified by their small and ovular bodies and club-shaped antennae. Adult sap beetles often feed on corn silk, pollen, and tassels. Larvae feed on kernels inside the husk. This fact sheet reviews how to identify sap beetles and their hosts and damage. It also provides ideas on how to monitor for sap beetles and outlines the options for managing them.
Gambel Oak Care, Shawn Olsen, Debbie Amundsen, Shital Poudyal
Gambel Oak Care, Shawn Olsen, Debbie Amundsen, Shital Poudyal
All Current Publications
Gambel oak is commonly called scrub oak, but other common names are Rocky Mountain white oak and Utah white oak. The scientific name is Quercus gambelii, after William Gambel, an American naturalist. This fact sheet reviews Gambel oak's usability in the landscape, its care, growth requirements, diseases and pests, and maintenance.
High Tunnel Pest Management - Caterpillars, Nick Volesky, Marion Murray
High Tunnel Pest Management - Caterpillars, Nick Volesky, Marion Murray
All Current Publications
In Utah high tunnel production, there are various caterpillar pests (larvae of moth and butterfly species) that cause economic damage to crops. Common caterpillar pest species found in Utah include hornworms, tomato fruit worms, imported cabbage worms, diamondback moths, cabbage loopers, armyworms, and cutworms. Various weed species growing inside or outside high tunnels can attract and harbor caterpillar pests. Managing caterpillar pests in high tunnels involves various mechanical, chemical, biological, and cultural control practices.
Barrenador Grande Del Durazno, Marion Murray, Diane G. Alston, Celina Wille
Barrenador Grande Del Durazno, Marion Murray, Diane G. Alston, Celina Wille
All Current Publications
El barrenador grande del durazno (orden Lepidóptera, familia Sesiidae) es originario de América del Norte, donde las cerezas y ciruelas silvestres son sus huéspedes nativos. Es una plaga esporádica en los frutales de hueso o carozo de Utah, pero si no se controla, puede ser lo suficientemente grave como para causar la pérdida del árbol.
Plagas De Orugas De Vegetales Del Género Brassica, Marion Murray, Diane G. Alston, Celina Wille
Plagas De Orugas De Vegetales Del Género Brassica, Marion Murray, Diane G. Alston, Celina Wille
All Current Publications
Los cultivos de Brassica albergan muchas plagas de insectos diferentes, inclusive varias especies de orugas. Los tres más comunes en Utah son la palomilla dorso de diamante (Plutella xylostella), la oruga de la col (Trichoplusia ni), y el gusano importado de las coles (Pieris rapae).
Insectos Cara De Gato, Diane G. Alston, Marion Murray, Celina Wille
Insectos Cara De Gato, Diane G. Alston, Marion Murray, Celina Wille
All Current Publications
Hay una serie de insectos con el hábito alimenticio de perforar y succionar que pueden causar deformidad y lesiones del tipo cara de gato en los frutales de pepita y hueso, como la chinche ligus, la chinche hedionda y la chinche del boxelder. La lesión cara de gato es causada cuando la chinche se alimenta agujerando los botones florales y la fruta. El resultado son depresiones, deformidades y cicatrices desagradables en la fruta. El nombre “cara de gato” proviene de la forma distorsionada de la fruta que se asemeja a las mejillas fruncidas de un gato. Además de los insectos …
Squash Bug Integrated Pest Management, Nick Volesky, Marion Murray
Squash Bug Integrated Pest Management, Nick Volesky, Marion Murray
All Current Publications
This infographic reviews integrated pest management for squash bugs. It includes information on the following: resistant varieties of vegetables to plant and crop rotation, homemade traps, mechanical destruction, mulches, trap crops, natural enemies, and organic and synthetic insecticides.
Three-Lined Potato Beetle, Nick Volesky
Three-Lined Potato Beetle, Nick Volesky
All Current Publications
The three-lined potato beetle (Lema daturaphila) is part of the Chrysomelidae family of beetles. It originates from North and Central America but has since been reported causing economic damage to crops worldwide, such as the cape gooseberry in South Africa and potato in Australia. Though uncommon, the three-lined potato beetle has previously been documented in Utah. In August 2020, it was closely observed causing economic damage in tomatillo production on a commercial vegetable farm in rural Box Elder County, Utah. This fact sheet reviews three-lined potato beetle identification, life cycle, and look-alikes, damage, and management.
Western Cherry Fruit Fly In Utah Orchards, Diane G. Alston, Marion Murray
Western Cherry Fruit Fly In Utah Orchards, Diane G. Alston, Marion Murray
All Current Publications
This fact sheet describes the western cherry fruit fly, including hosts, life history, timing control, host injury, and management.
Using Degree Days To Time Treatments For Insect Pests, Marion Murray
Using Degree Days To Time Treatments For Insect Pests, Marion Murray
All Current Publications
Insecticides that are applied for a perennial insect pest based on a calendar date often result in poor insect control and a waste of resources. Insect activity varies from year to year depending on weather. For example, in Logan, Utah, eggs of the apple pest codling moth began hatching on May 15 in 2005, May 5 in 2006, and April 30 in 2007.
Critical Temperatures For Frost Damage On Fruit Trees, Marion Murray
Critical Temperatures For Frost Damage On Fruit Trees, Marion Murray
All Current Publications
No abstract provided.
The Backyard Orchardist – Fruit Pests: Cherry, Marion Murray, Diane G. Alston
The Backyard Orchardist – Fruit Pests: Cherry, Marion Murray, Diane G. Alston
All Current Publications
This fact sheet describes diseases and insect pests of cherry in order of importance. Shothole attacks dormant leaf buds, blossom buds, leaves, fruit, and twigs (fruit infections are less common on cherry. Other diseases described are crown rot and root rot, gummosis, perennial canker, and powdery mildew, Insects include western cherry fruit fly, spider mites, black cherry aphids, flathead borers, pear sawfly, and speckled green fruitworm.
The Backyard Orchardist – Fruit Pests: Plum, Marion Murray, Diane G. Alston
The Backyard Orchardist – Fruit Pests: Plum, Marion Murray, Diane G. Alston
All Current Publications
Caused by a soil-borne, fungus-like organism (Phytophthora), crown and root rot occurs worldwide on almost all fruit trees. This pathogen is present in most soils, but only causes infection under optimal circumstances— high soil moisture or standing water, and susceptible host tissue. Once trees are infected, there is no cure.
Codling Moth In Utah Orchards, Marion Murray, Diane G. Alston
Codling Moth In Utah Orchards, Marion Murray, Diane G. Alston
All Current Publications
Codling moth (Order Lepidoptera, Family Tortricidae) is the most serious pest of apple and pear worldwide. In most commercial fruit producing regions and home yards in Utah, fruit must be protected to harvest a crop. Insecticides are the main control tactic. There are new insecticides available, many of which are less toxic to humans and beneficial insects and mites than earlier insecticides. For commercial orchards with more than 10 acres of contiguous apple and pear plantings, pheromone-based mating disruption can greatly reduce codling moth populations to allow reduced insecticide use.
The Backyard Orchardist – Fruit Pests: Apple, Marion Murray, Diane G. Alston
The Backyard Orchardist – Fruit Pests: Apple, Marion Murray, Diane G. Alston
All Current Publications
Fire blight is caused by a bacteria called Erwinia amylovora. Some varieties of apples are very susceptible to this disease, such as Jonathan, Jonagold, and Gala. Blossoms, terminal twigs, and sometimes entire limbs or trees are killed.
The Backyard Orchardist – Fruit Pests: Peach And Nectarine, Marion Murray, Diane G. Alston
The Backyard Orchardist – Fruit Pests: Peach And Nectarine, Marion Murray, Diane G. Alston
All Current Publications
Shothole is a common fungal disease in Utah. It attacks dormant leaf buds, blossom buds, leaves, fruit, and twigs. The first visible lesions occur on young leaves as small, round, tan spots that eventually fall out, leaving round holes.
High Tunnel Pest Management - Thrips, Nick Volesky, Marion Murray
High Tunnel Pest Management - Thrips, Nick Volesky, Marion Murray
All Current Publications
This fact sheet describes thrips, their hosts, life cycle, crop injury, monitoring, and management in high tunnels.
The Backyard Orchardist – Fruit Pests: Pear, Marion Murray, Diane G. Alston
The Backyard Orchardist – Fruit Pests: Pear, Marion Murray, Diane G. Alston
All Current Publications
Fire blight is caused by a bacterium called Erwinia amylovora. Pears are very susceptible to fire blight. Blossoms, terminal twigs, and sometimes entire limbs or trees are killed. Environmental conditions favoring infection are warm, rainy days during bloom.
Peach Twig Borer Mating Disruption, Marion Murray, Diane G. Alston
Peach Twig Borer Mating Disruption, Marion Murray, Diane G. Alston
All Current Publications
Mating disruption became commercially available in the early 1990s, and was adopted by many Utah growers about a decade later. Use of this pest management technology can be daunting due to high up-front costs and monitoring requirements; however, after two to three seasons of use, the cost of mating disruption is the same or even less than conventional pest management.
Cat-Facing Insects, Diane Alston, Michael Reding, Marion Murray
Cat-Facing Insects, Diane Alston, Michael Reding, Marion Murray
All Current Publications
There are a number of insects with the piercing-sucking feeding habit that can cause deformity and catfacing type injury to pome and stone fruits, including lygus bug, stink bug, and boxelder bug. Cat-facing injury is caused by puncture feeding in flower buds and fruit. The result is unsightly dimpling, deformity, and scarring of fruit. The name “cat facing” comes from the distorted fruit shape that resembles the puckered cheeks of a cat. In addition to the insects discussed in this section, some aphids and the campylomma bug can inflict similar injury.
Coryneum Or Shothole Blight, Kent Evans, Erin Frank, Jaydee Gunnell, Mike Pace, Maggie Shao
Coryneum Or Shothole Blight, Kent Evans, Erin Frank, Jaydee Gunnell, Mike Pace, Maggie Shao
All Current Publications
In Utah, there are typically three generations of corn earworm (CEW) each year. The first generation of adults either come from overwintering pupae (southern and central Utah), or migrate into northern Utah. The adult moth is tannish brown with a 1 1/2 inch wingspan. The front wings are marked with a distinct dark spot in the center and darker bands near the outer margins. The hind wings are lighter tan, with a dark band along the outer margins. The male moths have green eyes. Moth flight occurs primarily on warm, overcast evenings. Moth populations can be monitored using pheromone or …