Open Access. Powered by Scholars. Published by Universities.®

Entomology Commons™

Open Access. Powered by Scholars. Published by Universities.®

All Current Publications

Articles 181 - 197 of 197

Full-Text Articles in Entomology

Wheat Stripe Rust, Mike Pace, Clark Israelsen, Kent Evans, James Barnhill Jan 2008

Wheat Stripe Rust, Mike Pace, Clark Israelsen, Kent Evans, James Barnhill

All Current Publications

Stripe rust, or yellow rust, is primarily a foliar fungal disease of wheat, although it can infect spike and stem tissues. If the pathogen infects the spike (head) it causes extensive quality and grain yield loss. The disease is caused by the fungus Puccinia striiformis f. sp. tritici. The fungus can only survive and reproduce on wheat. It survives from one season to the next on volunteer plants.

Go to article

Beneficial Insects: Beetles, Erin W. Hodgson, Ron Patterson Nov 2007

Beneficial Insects: Beetles, Erin W. Hodgson, Ron Patterson

All Current Publications

There are many beneficial beetles in Utah besides lady beetles or ladybugs. Beetles can significantly reduce common insect and weed problems and in some cases eliminate the need for chemical control. Examples of beneficial beetles include: ground beetles, rove beetles, tiger beetles and tortoise beetles. Many of these beetles are native to Utah, while others have been purposely introduced to help control damage from exotic insect and weed pests.

Go to article

Beneficial Insects: Mantids, Erin W. Hodgson, Ron Patterson Nov 2007

Beneficial Insects: Mantids, Erin W. Hodgson, Ron Patterson

All Current Publications

Mantids refer to an entire predatory group of insects in the order Mantodea. The term “mantis” or “praying mantis” actually refers to a particular genus of mantids. Therefore, only some mantids belong to the genus Mantis. There are about 2,000 species of mantids worldwide and at least 20 species in the U.S. Two mantid species dominate Utah gardens: European mantid and Chinese mantid.

Go to article

Beneficial Insects: True Bugs, Erin W. Hodgson, Ron Patterson Nov 2007

Beneficial Insects: True Bugs, Erin W. Hodgson, Ron Patterson

All Current Publications

True bugs have piercing-sucking mouthparts and belong to the order Hemiptera and suborder Heteroptera. There are more than 38,000 species of true bugs, and are most closely related to aphids, cicadas, and leaf hoppers. Although some true bugs are considered pests, about one-third are predaceous. True bugs have forewings, or hemelytra, that cross over the back at rest, but sometimes the wings are reduced.

Go to article

Asparagus Beetle And Spotted Asparagus Beetle, Erin W. Hodgson, Dan Drost Sep 2007

Asparagus Beetle And Spotted Asparagus Beetle, Erin W. Hodgson, Dan Drost

All Current Publications

Asparagus beetle, Crioceris asparagi, and spotted asparagus beetle, C. duodecimpunctata are leaf beetles in the family Chrysomelidae. These beetles feed exclusively on asparagus and are native to Europe. Asparagus beetle is the more economically injurious of the two species.

Go to article

Lygus Bug In Alfalfa Seed, Erin W. Hodgson, Mike Pace Sep 2007

Lygus Bug In Alfalfa Seed, Erin W. Hodgson, Mike Pace

All Current Publications

Lygus bug, Lygus lineolaris, is a true plant bug in the family Miridae (Fig. 1). Sometimes this insect is also called tarnished plant bug. Lygus bug is native to North America and is distributed throughout Mexico, United States and Canada. Western tarnished plant bug, L. herperus, is closely related to the lygus bug and has overlapping distributions in the western United States.

Go to article

Cereal Leaf Beetle, Erin W. Hodgson, Edward W. Evans Aug 2007

Cereal Leaf Beetle, Erin W. Hodgson, Edward W. Evans

All Current Publications

Cereal leaf beetle, Oulema melanopus, is a leaf beetle in the family Chrysomelidae. These beetles are native to Europe and have been considered pests of small grains since 1737. In 1962, cereal leaf beetle was first detected in the United States in a Michigan grain field. Since the 1960s, this insect has spread throughout much of the United States and Canada; now at least 30 states have confirmed cereal leaf beetle populations.

Go to article

Pear Psylla (Cacopsylla Pyricola), Diane Alston, Marion Murray Aug 2007

Pear Psylla (Cacopsylla Pyricola), Diane Alston, Marion Murray

All Current Publications

Pear psylla (Cacopsylla pyricola), a western Europe native, is a very small sap-feeding insect and is considered the most serious insect pest of pear in the United States. Serious infestations can stunt, defoliate, and even kill trees. Psylla feeding produces copious amounts of sticky honeydew that can cause fruit russetting.

Go to article

Aphids In Alfalfa, Erin W. Hodgson Jul 2007

Aphids In Alfalfa, Erin W. Hodgson

All Current Publications

Aphids belong in the order Hemiptera and family Aphididae. Aphids are common insects in field and forage crops, with at least six kinds in Utah alfalfa.

Go to article

Cranberry Girdler, Erin W. Hodgson, Alan H. Roe Jun 2007

Cranberry Girdler, Erin W. Hodgson, Alan H. Roe

All Current Publications

Cranberry girdler, Chrysoteuchia topiaria, can be found throughout the U.S., but is particularly damaging to turfgrass seed production areas in the Pacific Northwest. This insect was first detected in northern and northeastern Utah during the early 1980’s. Larvae prefer cool-season grasses, such as Kentucky bluegrass, bentgrass and fine-leaf fescues. In addition to causing significant damage to turfgrass, it is recorded as a pest of other grasses, cranberry, Douglas fir, and true firs.

Go to article

Armyworm And Cutworms In Turf, Erin W. Hodgson Jun 2007

Armyworm And Cutworms In Turf, Erin W. Hodgson

All Current Publications

Armyworms and cutworms can be found all over the United States, with at least three species found in Utah. These insects belong to a large group of night-flying moths in the family Noctuidae. Although not new pests to turfgrass, armyworms and cutworms are often ignored, and plant health decline is confused with drought stress, fungal disease, or other insects.

Go to article

Sod Webworms, Erin W. Hodgson, Alan H. Roe Jun 2007

Sod Webworms, Erin W. Hodgson, Alan H. Roe

All Current Publications

The term “sod webworm” refers to an insect complex of more than twenty different grass-infesting species. Adult sod webworms are pyralid moths, but are more commonly referred to as “snout moths” because their mouthparts are projected forward (Fig. 1). Sod webworms are distributed through the U.S., and at least seven different species occur in Utah (Table 1).

Go to article

Yellowjackets, Hornets, And Paper Wasps, Erin Hodgson, Alan Roe May 2007

Yellowjackets, Hornets, And Paper Wasps, Erin Hodgson, Alan Roe

All Current Publications

Social wasps, including yellowjackets, hornets and paper wasps, are common stinging insects in Utah (Figs. 1, 2). The wasps are related to ants and bees, which are also capable of stinging; however, yellowjackets are the most likely to sting.

Go to article

Pantry Pests, Erin W. Hodgson, Alan H. Roe Oct 2006

Pantry Pests, Erin W. Hodgson, Alan H. Roe

All Current Publications

Pantry pests are insects that infest whole or processed food in the home. Infestations can start out with just a few insects, but a population can quickly surge if given a proper food source and a place to reproduce. Immature and adult insects are typically brought into a home in grain-based products.

Go to article

Springtails, Jay B. Karren, Alan H. Roe Sep 2001

Springtails, Jay B. Karren, Alan H. Roe

All Current Publications

Springtails are small, abundant, wingless insects of the order Collembola that live in a variety of moist habitats. Because of their small size and micro- habitat, they are seldom observed. Most of them live in the soil or in other concealed situations.

Go to article

Clover Mites, Dr. Jay B. Karren, Alan H. Roe Jun 2000

Clover Mites, Dr. Jay B. Karren, Alan H. Roe

All Current Publications

Clover mites, Bryobia praetiosa Koch, are not insects but are more closely related to chiggers, ticks, and spiders. They belong to the spider mite family Tetranychidae. These mites are found throughout the world on trees, shrubs, flowers, grasses, and agricultural crops.

Go to article

Boom Sprayer Calibration For Pesticide Applications, Richard Beard, Howard M. Deer Feb 1999

Boom Sprayer Calibration For Pesticide Applications, Richard Beard, Howard M. Deer

All Current Publications

To protect your investment in agricultural pesticides, a boom sprayer should be calibrated at the start of the season and whenever application conditions change. Also, sprayer output should be periodically checked throughout the season to assure proper application rate. Although boom sprayers are calibrated in a variety of ways, each method utilizes the measurements of nozzle flow rate and equipment travel speed.

Go to article

First Prev