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A Few Important Chinch Bug Remedies, C. P. Gilette 2017 Iowa Agricultural College

A Few Important Chinch Bug Remedies, C. P. Gilette

Bulletin (Iowa Agricultural Experiment Station)

wet backward spring and well distributed summer rains have saved Iowa from extensive chinch-bug losses this year. The bugs have been reported, however, in injurious numbers over limited areas, in various parts of the state. There probably is no year when there are not bugs enough in many localities to do much harm, if the climatic conditions are favorable, and, as we have noway of knowing when a chinch-bug year is coming until it is upon us, it is exceedingly important that some systematic method of combating this evil be fixed upon by the farming communities.


Horn Fly Control And Growth Implants Are Effective Strategies For Heifers Grazing Flint Hills Pasture, S. S. Trehal, J. L. Talley, K. D. Sherrill, T. Spore, R. N. Wahl, W. R. Hollenbeck, Dale Blasi 2017 Kansas State University, Manhattan

Horn Fly Control And Growth Implants Are Effective Strategies For Heifers Grazing Flint Hills Pasture, S. S. Trehal, J. L. Talley, K. D. Sherrill, T. Spore, R. N. Wahl, W. R. Hollenbeck, Dale Blasi

Kansas Agricultural Experiment Station Research Reports

Horn flies (Haematobia irritans (L.)) are considered the most important external parasite that negatively affects pasture-based beef systems with losses estimated to exceed $1 billion annually to the U.S. beef industry. Control strategies have relied heavily on insecticide applications to control horn flies and are implemented when the economic threshold of 200 flies/animal have been exceeded. When horn fly populations are maintained below 200 flies/animal by treating them with insecticides then the level of stress annoyance behaviors such as leg stomping, head throwing, and skin twitching decreases while grazing increases. While most stocker operators utilize some type ...


Gambel Oak Care, Shawn Olsen, Debbie Amundsen 2017 Utah State University

Gambel Oak Care, Shawn Olsen, Debbie Amundsen

Shawn Olsen

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.


Corn Earworm, Diane G. Alston, Shawn Olsen, James Barnhill 2017 Utah State University

Corn Earworm, Diane G. Alston, Shawn Olsen, James Barnhill

Shawn Olsen

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 ...


Wheat Stripe Rust, Mike Pace, Clark Israelsen, Kent Evans, James Barnhill 2017 Utah State University

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

Clark Israelsen

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.


Necrotic Ring Spot, Kent Evans, Jaydee Gunnell, Erin Frank 2017 Utah State University

Necrotic Ring Spot, Kent Evans, Jaydee Gunnell, Erin Frank

Jaydee Gunnell

Necrotic Ring Spot (NRS) is a fungal disease that primarily affects the roots of turfgrasses. The disease occurs on turfgrasses worldwide. Many turf species can serve as host to the disease. In Utah, the disease primarily affects Kentucky and annual bluegrass turf, although it can occur on tall fescue grass as well. O


Coryneum Blight Or Shothole, Kent Evans, Erin Frank, Jaydee Gunnell, Mike Pace 2017 Utah State University

Coryneum Blight Or Shothole, Kent Evans, Erin Frank, Jaydee Gunnell, Mike Pace

Jaydee Gunnell

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 ...


Snow Mold On Turfgrass, Kent Evans, Erin Frank, Taun Beddes, Jaydee Gunnell 2017 Utah State University

Snow Mold On Turfgrass, Kent Evans, Erin Frank, Taun Beddes, Jaydee Gunnell

Jaydee Gunnell

Shothole borers (Fig. 1) are bark beetles that may attack stressed or injured trees. They have a wide host range, including all fruit trees grown in Utah, quince, loquat, serviceberry, wild cherry, chokecherry, mountain ash, hawthorn and elm. In Utah, apple, cherry, pear, and hawthorn are preferred hosts.


Lilac-Ash Borer, Ryan S. Davis, Taun Beddes, Jay B. Karren 2017 Utah State University

Lilac-Ash Borer, Ryan S. Davis, Taun Beddes, Jay B. Karren

Taun Beddes

The lilac-ash borer (Podosesia syringae), belongs to a group of insects known as the clear-winged moths. The wings of most sesiid moths in have at least partially transparent wings (devoid of the colored scales that coat most moth and butterfly wings).


Eriophyid Mites, Bud, Blister, Gall, And Rust Mites, Ryan S. Davis, Taun Beddes 2017 Utah State University

Eriophyid Mites, Bud, Blister, Gall, And Rust Mites, Ryan S. Davis, Taun Beddes

Taun Beddes

Eriophyid mites are translucent, cigar-shaped microscopic mites that cause deformities on many plants species. These mites are noticed when their feeding causes abnormalities of plant tissues such as erineum, galls, brooms, leaf curling, blisters, rusts, silvering, fruit rusetting, and deformed buds, catkins, fruits, etc. Fortunately, these mites rarely cause serious harm to plants, and control is seldom needed. In fact, eriophyid mites can serve as an alternative food source for predatory mites when their primary food source is absent.


Bumble Flower Beetle, Taun Beddes, Ryan S. Davis 2017 Utah State University

Bumble Flower Beetle, Taun Beddes, Ryan S. Davis

Taun Beddes

The bumble flower beetle (BFB) is a common member of the Scarabaeidae (scarab) beetle family. Its common name originated because adult BFB’s often fly close to the ground and emit a loud buzzing sound similar to that of a bumble bee. Larvae (grubs) and adults are often found in or near fermenting and/or decomposing organic matter.


Fire Blight, Kent Evans, Erin Frank, Taun Beddes, Mike Pace 2017 Utah State University

Fire Blight, Kent Evans, Erin Frank, Taun Beddes, Mike Pace

Taun Beddes

The fall webworm, Hyphantria cunea, is a common defoliator of ornamental and fruit trees in Utah. Starting around late July, the caterpillars, webbing, and damage become noticeable, particularly in some of the canyons adjacent to populated areas (Little Cottonwood canyon, Logan canyon, Provo canyon, etc.).


Western Striped And Western Spotted Cucumber Beetles, Diane Alston, Dennis Worwood 2017 Utah State University

Western Striped And Western Spotted Cucumber Beetles, Diane Alston, Dennis Worwood

Dennis Worwood

Cucumber beetles (Coleoptera: Chrysomelidae) are pests of cucurbits throughout the U.S. Western species of cucumber beetles will also feed on leaves of other vegetables (especially corn, tomato, potato, and bean) and soft fruits (especially apricot and peach) (Table 1). In Utah, watermelon and cantaloupe have been the main commercial crops attacked. In home gardens, zucchini, cucumber and cantaloupe have suffered the most damage.


The Mayfly Newsletter, Donna J. Giberson 2017 The Permanent Committee of the International Conferences on Ephemeroptera

The Mayfly Newsletter, Donna J. Giberson

The Mayfly Newsletter

No abstract provided.


Microbial Communities Associated With Stable Fly (Diptera: Muscidae) Larvae And Their Developmental Substrates, Erin Scully, Kristina Friesen, Brian Wienhold, Lisa M. Durso 2017 USDA-ARS

Microbial Communities Associated With Stable Fly (Diptera: Muscidae) Larvae And Their Developmental Substrates, Erin Scully, Kristina Friesen, Brian Wienhold, Lisa M. Durso

Faculty Publications: Department of Entomology

Bacteria are essential for stable fly (Stomoxys calcitrans (L.)) larval survival and development, but little is known about the innate microbial communities of stable flies, and it is not known if their varied dietary substrates influence their gut microbial communities. This investigation utilized 454 sequencing of 16S and 18S amplicons to characterize and compare the bacterial and eukaryotic microbial communities in stable fly larvae and their developmental substrates. The microbial community of the third-instar stable fly larvae is unambiguously distinct from the microbial community of the supporting substrate, with bacterial communities from larvae reared on different substrates more similar to ...


Parameters For Successful Parental Rnai As An Insect Pest Management Tool In Western Corn Rootworm, Diabrotica Virgifera Virgifera, Ana Maria Vélez, Elane Fishilevich, Natalie Matz, Nicholas P. Storer, Kenneth E. Narva, Blair D. Siegfried 2017 University of Nebraska-Lincoln

Parameters For Successful Parental Rnai As An Insect Pest Management Tool In Western Corn Rootworm, Diabrotica Virgifera Virgifera, Ana Maria Vélez, Elane Fishilevich, Natalie Matz, Nicholas P. Storer, Kenneth E. Narva, Blair D. Siegfried

Faculty Publications: Department of Entomology

Parental RNAi (pRNAi) is an RNA interference response where the gene knockdown phenotype is observed in the progeny of the treated organism. pRNAi has been demonstrated in female western corn rootworms (WCR) via diet applications and has been described as a potential approach for rootworm pest management. However, it is not clear if plant-expressed pRNAi can provide effective control of next generation WCR larvae in the field. In this study, we evaluated parameters required to generate a successful pRNAi response in WCR for the genes brahma and hunchback. The parameters tested included a concentration response, duration of the dsRNA exposure ...


Temperature-Dependent Wsm1 And Wsm2 Gene-Specific Blockage Of Viral Long-Distance Transport Provides Resistance To Wheat Streak Mosaic Virus And Triticum Mosaic Virus In Wheat, Satyanarayana Tatineni, E. N. Wosula, Melissa S. Bartels, Gary L. Hein, Robert A. Graybosch 2017 University of Nebraska-Lincoln

Temperature-Dependent Wsm1 And Wsm2 Gene-Specific Blockage Of Viral Long-Distance Transport Provides Resistance To Wheat Streak Mosaic Virus And Triticum Mosaic Virus In Wheat, Satyanarayana Tatineni, E. N. Wosula, Melissa S. Bartels, Gary L. Hein, Robert A. Graybosch

Faculty Publications: Department of Entomology

Wheat streak mosaic virus (WSMV) and Triticum mosaic virus (TriMV) are economically important viral pathogens of wheat. Wheat cvs.Mace, carrying the Wsm1 gene, is resistant toWSMV and TriMV, and Snowmass, with Wsm2, is resistant to WSMV. Viral resistance in both cultivars is temperature sensitive and is effective at 18˚C or below but not at higher temperatures. The underlying mechanisms of viral resistance of Wsm1 and Wsm2, nonallelic single dominant genes, are not known. In this study, we found that fluorescent protein–tagged WSMV and TriMV elicited foci that were approximately similar in number and size at 18 and ...


A Comparison Of Honey Bee-Collected Pollen From Working Agricultural Lands Using Light Microscopy And Its Metabarcoding, M. D. Smart, R. S. Cornman, D. D. Iwanowicz, M. McDermott-Kubeczko, J. S. Pettis, M. S. Spivak, C.R.V. Otto 2017 U.S. Geological Survey Northern Prairie Wildlife Research Center

A Comparison Of Honey Bee-Collected Pollen From Working Agricultural Lands Using Light Microscopy And Its Metabarcoding, M. D. Smart, R. S. Cornman, D. D. Iwanowicz, M. Mcdermott-Kubeczko, J. S. Pettis, M. S. Spivak, C.R.V. Otto

Faculty Publications: Department of Entomology

Taxonomic identification of pollen has historically been accomplished via light microscopy but requires specialized knowledge and reference collections, particularly when identification to lower taxonomic levels is necessary. Recently, next-generation sequencing technology has been used as a cost-effective alternative for identifying beecollected pollen; however, this novel approach has not been tested on a spatially or temporally robust number of pollen samples. Here, we compare pollen identification results derived from light microscopy and DNA sequencing techniques with samples collected from honey bee colonies embedded within a gradient of intensive agricultural landscapes in the Northern Great Plains throughout the 2010–2011 growing seasons ...


Insect And Plant-Derived Mirnas In Greenbug (Schizaphis Graminum) And Yellow Sugarcane Aphid (Sipha Flava) Revealed By Deep Sequencing, Haichuan Wang, Chi Zhang, Yongchao Dou, Bin Yu, Yunfeng Liu, Tiffany Heng-Moss, Guoqing Lu, Michael Wachholtz, Jeffery D. Bradshaw, Paul Twigg, Erin Scully, Nathan Palmer, Gautam Sarath 2017 University of Nebraska - Lincoln

Insect And Plant-Derived Mirnas In Greenbug (Schizaphis Graminum) And Yellow Sugarcane Aphid (Sipha Flava) Revealed By Deep Sequencing, Haichuan Wang, Chi Zhang, Yongchao Dou, Bin Yu, Yunfeng Liu, Tiffany Heng-Moss, Guoqing Lu, Michael Wachholtz, Jeffery D. Bradshaw, Paul Twigg, Erin Scully, Nathan Palmer, Gautam Sarath

Faculty Publications: Department of Entomology

Schizaphis graminum (green bug; GB) and Sipha flava (yellowsugarcane aphid; YSA) are two cereal aphid species with broad host ranges capable of establishing on sorghum (Sorghum bicolor) and several switchgrass (Panicum virgatum) cultivars. Switchgrass and sorghum are staple renewable bioenergy crops that are vulnerable to damage by aphids, therefore, identifying novel targets to control aphids has the potential to drastically improve yields and reduce losses in these bioenergy crops. Despite thewealth of genomic and transcriptomic information available from a closely related model aphid species, the pea aphid (Acyrthosiphon pisum), similar genomic information, including the identification of small RNAs, is still ...


The Forgotten Cousin In Freshwater Community Ecology: Tidal Freshwater Wetlands, Jack R. McLachlan 2016 UMaine

The Forgotten Cousin In Freshwater Community Ecology: Tidal Freshwater Wetlands, Jack R. Mclachlan

Electronic Theses and Dissertations

Tidal freshwaters are unique in their placement in the landscape, forming where freshwater riverine flows are sufficient to overwhelm the saline water of the incoming tide, but not strong enough to suppress tidal water-height fluctuations. Tidal freshwaters and their wetlands have been overlooked by freshwater and marine researchers alike; neither discipline considers tidal freshwaters to fall under their purview. Invertebrate communities in tidal freshwaters are thought to be species depauperate; the consensus is that they support fewer taxa than nearby non-tidal freshwaters, but little is known about how these communities are structured. This study investigated how tidal hydrology, an atypical ...


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