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The Effect Of Symbioses Between Mold Mites (Acaridae: Tyrophagus Putrescentiae) And Aspergillus Flavus On Their Respective Populations In Stored Maize., Paige Pionke Cummins
The Effect Of Symbioses Between Mold Mites (Acaridae: Tyrophagus Putrescentiae) And Aspergillus Flavus On Their Respective Populations In Stored Maize., Paige Pionke Cummins
Graduate Theses and Dissertations
Zea mays is the most commonly grown grain in the world and is used for animal feed, human consumption, and the creation of other products such as ethanol and bioplastics. Contamination of stored maize with stored grain invaders can lead to loss of revenue, reduced food availability, and potential health complications. Two such storage invaders; the mold mite Tyrophagus putrescentiae and the fungus Aspergillus flavus can work as symbionts within the grain storage system. To determine resulting population growth from this symbiosis, maize was inoculated with three treatments: A. flavus with no mites, T. putrescentiae with no fungus, and both …
Demonstration Farm Provides Educational Opportunity For Ipm, Nick Volesky, Mair Murray
Demonstration Farm Provides Educational Opportunity For Ipm, Nick Volesky, Mair Murray
Outcomes and Impact Quarterly
The mission of USU Extension’s Integrated Pest Management (IPM) program is to increase the use of sustainable pest management practices within urban and rural landscapes to provide economic, human, and environmental health in Utah. In the spring of 2022, the IPM program established a vegetable farm to test and demonstrate IPM practices. The farm served as an experiential learning classroom for almost 50 farmers and home gardeners.
Conservation And Variation In Agricultural Landscapes: A Survey Of Insect Populations Across Naranjilla Cultivation Methods In The Eastern Andean Cloud Forest, Ian Zakelj
Independent Study Project (ISP) Collection
This study compared insect biodiversity among five sites in agricultural landscapes and natural forest in the El Placer community in the valley of the Rio Pastaza in the eastern Andean cloud forest. The area is of vital importance to conservation, as it falls in the ecological corridor between the Sangay and Llanganates national parks. The primary crop produced by the residents of El Placer is naranjilla, and it is cultivated in a variety of manners, mostly with intensive chemical use. The goal of the study was to find out which types of practices were the least harmful to the insect …
Examining Risks To Honey Bee Pollinators Foraging In Agricultural Landscapes, Jon Zawislak
Examining Risks To Honey Bee Pollinators Foraging In Agricultural Landscapes, Jon Zawislak
Graduate Theses and Dissertations
Bee pollinators provide essential ecological services to wild plant communities, and addtremendous economic value to agriculture by improving both the quality and quantity of crop yield. Beekeepers are often contracted by growers to provide colonies of honey bees for pollination of high-value produce (fruits, vegetables and nuts). Many of the major commodity crops produced in the central and mid-southern United States are wind-pollinated (rice, corn, grain sorghum, wheat), or are sufficiently self-fertile (soybeans, cotton), and so do not require bee pollination in order to produce yield. Beekeepers still rely on these agricultural landscapes to support honey bee colonies when not …
Establishment Of Wildflower Islands To Enhance Roadside Health And Aesthetics, Walter Schacht, Judy Wu-Smart
Establishment Of Wildflower Islands To Enhance Roadside Health And Aesthetics, Walter Schacht, Judy Wu-Smart
Nebraska Department of Transportation: Research Reports
Wildflowers are crucial in the ecological function of the low-input roadside plant communities in terms of water andnutrient cycling, nutrient inputs such as nitrogen, total plant canopy cover, stand longevity, and provision of habitat for numerous small animals. Further, wildflowers provide critical foraging and nesting resources for birds, insects, and other wildlife. Unfortunately, habitat loss from agricultural and urban development has led to rapid population declines in wild bees and other pollinators across the US, thereby jeopardizing not only food production but also the sustainability of our natural landscapes (Kearns & Inouye, 1997). One way to mitigate wild bee decline …
Effectiveness Of Different Agricultural Management Styles As Insect Biological Corridors: A Comparison Of Insect Populations In Fragmented Chocó Cloud Forest, Ecuador, Tara M. Krantz
Independent Study Project (ISP) Collection
Insects are part of the most diverse class of animals on the planet and are essential to various ecological functions such as pollination, nutrient cycling, providing a food source for other taxa, and more. The diversity and ecological services of insects are necessary to the operation of agriculture because of pest control and pollination of crops. However, the diversity of insects is severely reduced due to fragmentation. It is currently not well understood if certain types of agriculture can lessen the impact of fragmentation on natural and crop-based insect communities. In this study, insect populations in four different agricultural management …
Clover Root Curculio (Sitona Hispidulus F.), Kaitlin Rim, Steven Price, Ricardo Ramirez
Clover Root Curculio (Sitona Hispidulus F.), Kaitlin Rim, Steven Price, Ricardo Ramirez
All Current Publications
The clover root curculio is an important agricultural pest in forage production systems. Adult beetles feed on the host plant leaves while the damaging larval stage feeds on the roots below ground. Heavy larval feeding has been associated with reduced stand establishment, disruption of nutrient and water uptake, increased secondary plant pathogen infection, decreased winter plant survival, delayed green-up, and reductions in forage quality and yield. Due to the hidden nature of eggs and larvae in the soil, CRC has been overlooked and damage is often misdiagnosed as nutrient deficiencies or pathogens. Historically, applications of chlorinated hydrocarbons, carbamates, and organophosphates …
Confirming World-Wide Distribution Of An Agriculturally Important Lacewing, Chrysoperla Zastrowi Sillemi, Using Songs, Morphology, Mitochondrial Gene Sequencing, And Phylogenetic Reconstruction, Zoe Mandese
Honors Scholar Theses
The Chrysoperla carnea-group of green lacewings is a cryptic species complex. Species within the group are morphologically similar, yet isolated from one another via reproductive mating song. Chrysoperla zastrowi, a species within the carnea-group, is currently described with a distribution ranging from South Africa to the Middle East and India. However, recent collections of carnea-group lacewings from Guatemala and California were preliminarily identified as Chrysoperla zastrowi based upon similarities in their vibrational courtship songs. This analysis aims to place six specimens, collected by collaborators in Guatemala, Armenia, Iran, and California, into a pre-existing phylogeny of the …
Impact Of Selected Integrated Pest Management Techniques On Arthropods In Cucurbit Production Systems, Amanda R. Skidmore
Impact Of Selected Integrated Pest Management Techniques On Arthropods In Cucurbit Production Systems, Amanda R. Skidmore
Theses and Dissertations--Entomology
Cucurbits (i.e. squash, melons, pumpkins, gourds) are high value crops of global importance. Insect pests in these systems are often controlled by chemical insecticides, which are not always effective and can be damaging to the environment. Many integrated pest management (IPM) techniques have been developed for the control of pests in these systems, with a goal of improving system stability and reducing chemical inputs. The overarching goal of my research was to investigate the impact of select IPM techniques on arthropod populations and yield in organic and conventional cucurbit systems.
This dissertation can be divided into three major projects which …
Hart Prairie Preserve Site Visit To Assess Aspen Health Nature Conservancy, Flagstaff, Az, Amanda Grady
Hart Prairie Preserve Site Visit To Assess Aspen Health Nature Conservancy, Flagstaff, Az, Amanda Grady
Aspen Bibliography
On June 11, 2018, Amanda Grady, Entomologist, Arizona Zone, Forest Health Protection, performed a site visit to evaluate aspen health on the Nature Conservancy lands at Heart Prairie Preserve (HPP) near Flagstaff. Specifically, the evaluation was to determine whether or not the aspen within exclosures on Fern Mountain have symptoms or signs of Oystershell scale (OSS), an emergent forest pest contributing to aspen decline in northern Arizona.
Brown Marmorated Stink Bug [Halyomorpha Halys (Stal)], Mark Cody Holthouse, Diane G. Alston, Lori R. Spears, Erin Petrizzo
Brown Marmorated Stink Bug [Halyomorpha Halys (Stal)], Mark Cody Holthouse, Diane G. Alston, Lori R. Spears, Erin Petrizzo
All Current Publications
This fact sheet describes the brown marmorated stink bug, an invasive insect pest from eastern Asia. It includes a description of where it is found in Utah, host plants, crop injury and plant damage, general description of life stages, agricultural risks, monitoring, management, insecticides, and what to do if you find it.
Spider Mites In Raspberry, Diane Alston
Spider Mites In Raspberry, Diane Alston
All Current Publications
This fact sheet describes spider mites in raspberry and includes a description of the mite, plant injury, monitoring, and cultural, biological and chemical control management options.
Surface Waters: Ammonium Is Not Ammonia – Part 3, John E. Sawyer, Matthew J. Helmers
Surface Waters: Ammonium Is Not Ammonia – Part 3, John E. Sawyer, Matthew J. Helmers
John E. Sawyer
Two previous ICM News articles outlined the difference between ammonium and ammonia, the relationship between the two nitrogen forms, and the implication of a combined (ammonium-N plus ammonia-N) analysis related to water quality criteria for aquatic life and chlorination treatment for drinking water.This article focuses on the potential sourcing of ammonium and ammonia in surface waters. Ammonium and ammonia in surface water systems can originate from many sources, and are naturally occurring forms of nitrogen. Predominant sources will vary on a watershed or sub-watershed basis. Also, sources and concentrations are greatly influenced by hydrology, including timing and volume of water …
Corn Following Corn In 2008, Mahdi Al-Kaisi, Roger W. Elmore, Antonio P. Mallarino, Palle Pedersen, Alison E. Robertson, John E. Sawyer, Jon J. Tollefson
Corn Following Corn In 2008, Mahdi Al-Kaisi, Roger W. Elmore, Antonio P. Mallarino, Palle Pedersen, Alison E. Robertson, John E. Sawyer, Jon J. Tollefson
John E. Sawyer
Corn following corn is in rough shape in areas across Iowa. Many wonder what is happening. The crop’s condition in general is not normal for this time of year. For example, last Sunday the USDA rated this year’s Iowa corn crop as 54 percent in ‘Good’ to ‘Excellent’ condition and 15 percent is ‘Poor’ or ‘Very Poor.’ Last year 72 percent was rated ‘Good’ to ‘Excellent’ and 5 percent was in ‘Poor’ or ‘Very Poor’ condition during the same week. Average plant height as of Sunday was 24 inches compared to 40 inches at end of the same week last …
A Brief History Of Corn: Looking Back To Move Forward, Jon Derek Pruitt
A Brief History Of Corn: Looking Back To Move Forward, Jon Derek Pruitt
Doctor of Plant Health Program: Dissertations and Student Research
Maize was domesticated from teosinte in Mexico some 7,000 to 10,000 years ago and quickly spread through the Americas. It has become one of the most important crops at a local and global level. Two types, Northern Flint corn and Southern Dent corns provided the basis of the genetic background of modern maize hybrids. The development of hybrids, first double-cross and later single-cross hybrids, along with a transition to high input farming provided huge yield increases, which have continued to improve with improving technology.
Increase in maize production also caused a rise in Western corn Rootworm (Diabrotica virgifera virgifera …
Raspberry Crown Borer [Pennisetia Marginata], Diane Alston
Raspberry Crown Borer [Pennisetia Marginata], Diane Alston
All Current Publications
This fact sheet described raspberry crown borer, a pest that attacks raspberry plants in northern Utah, causing cane-wilt and death. It includes life history, host injury, monitoring and thresholds, and management techniques.
Abejas Silvestres (Himenóptera: Apoidea) En La Neblina: Análisis De La Diversidad, Interacciones, Y Potencial Para Miel En Un Remanente De Bosque Nublado, Jen Hayes
Independent Study Project (ISP) Collection
Las abejas (Himenóptera: Apoidea) se encuentran en casi cada una de las bioregiones en el mundo. Su composición es muy diversa en los neotrópicos. Las abejas silvestres (no-Apis) representan casi el 90% de las especies de abejas en todo el mundo (Parra, 2005). Los objetivos principales de este estudio fueron realizar un inventario de las especies de abejas al final de la estación seca, observar sus interacciones intra-específicas, y determinar el potencial de producción de miel medicinal de las abejas sin aguijón (Apidae: Meliponini). El estudio fue realizado en la Reserva Inti Llacta, un remanente de bosque nublado …
Rose Stem Girdler [Agrilus Cuprescens], Diane Alston
Rose Stem Girdler [Agrilus Cuprescens], Diane Alston
All Current Publications
This fact sheet provides information on the rose stem girdler, a common cane-boring beetle of raspberry and blackberry plants in northern Utah. It includes a description, host plants, life history, monitoring and thresholds, and management strategies.
Invasive Insect Look-Alikes, Mistaken Insect Identity, Lori R. Spears, Ryan S. Davis, Ricarado A. Ramirez
Invasive Insect Look-Alikes, Mistaken Insect Identity, Lori R. Spears, Ryan S. Davis, Ricarado A. Ramirez
All Current Publications
This fact sheet provides a quick identification reference guide for the most common look-alike species.
Ec86-1548 Common Insect Pests Of Trees In The Great Plains, Mary Ellen Dix, Judith E. Pasek, Mark O. Harrell, Frederick P. Baxendale
Ec86-1548 Common Insect Pests Of Trees In The Great Plains, Mary Ellen Dix, Judith E. Pasek, Mark O. Harrell, Frederick P. Baxendale
Judith E Pasek
This publication was developed by entomologists on the Pest Management Task Force of the Great Plains Agricultural Council Forestry Committee to provide the public and professionals with information needed to identify and manage common insect pests of trees in the Great Plains. It is designed for those with no formal training in entomology and is not intended to summarize everything known about a particular insect.
Infestation Of Aetalion Reticulatum (Linnaeus) (Hemiptera: Aethalionidae) In Plants Of Euterpe Oleracea Martius (Arecaceae) In Acre State, Brazil, Rodrigo Souza Santos Rss
Infestation Of Aetalion Reticulatum (Linnaeus) (Hemiptera: Aethalionidae) In Plants Of Euterpe Oleracea Martius (Arecaceae) In Acre State, Brazil, Rodrigo Souza Santos Rss
Rodrigo Souza Santos RSS
The açai palm (Euterpe oleracea Martius) is a native palm tree from the Amazon region floodplains and may be indicated as the most economically profitable species of this genus. Its fruit pulp is extracted and widely consumed by the population of northern Brazil in several ways. With the expansion of the planted area many factors may affect the production and limit the cultivation, highlighting the occurrence of insect pests that cause losses in production. This report presents the first occurrence of the leafhopper Aetalion reticulatum (Linnaeus) (Hemiptera: Auchenorrhyncha: Aethalionidae) in E. oleracea plants. The occurrence of this insect associated with …
Vegetable Production Guide For Commercial Growers, 2014-15, Ricardo Bessin, Kenneth W. Seebold, Shubin Saha, Shawn Wright, John Strang
Vegetable Production Guide For Commercial Growers, 2014-15, Ricardo Bessin, Kenneth W. Seebold, Shubin Saha, Shawn Wright, John Strang
Agriculture and Natural Resources Publications
Successful vegetable production generally requires the grower to make daily decisions regarding pest management, irrigation, and cultural practices. Would-be growers unwilling to make serious investments of time (and money) should not attempt to expand beyond a space at the farmers’ market. It is important for vegetable growers to have a market outlet for their product before they choose to start production. Good marketing plans start with the customer and work backward to production. Potential growers should first determine exactly what buyers want, how they want it, and when they want it. They then must determine how these crops should be …
G74-108 Wilts Of Cucurbits (Revised October 1994), James R. Steadman, David L. Keith, Laurie Hodges
G74-108 Wilts Of Cucurbits (Revised October 1994), James R. Steadman, David L. Keith, Laurie Hodges
Laurie Hodges
Discussion covers the symptoms, disease cycles, and control measures for bacterial and Fusarium wilts of cucurbits, including cucumbers, cantaloupe, watermelons, squash, and pumpkins. Wilt caused by squash vine borer also is covered.
G73-46 Hessian Fly On Wheat, John E. Foster, Gary L. Hein
G73-46 Hessian Fly On Wheat, John E. Foster, Gary L. Hein
John E. Foster
This NebGuide discusses the life cycle, control and prevention of the Hessian fly. Plant-safe dates and resistant wheat varieties are also examined. The Hessian fly, Mayetiola destructor (Say), is not native to the United States, but was probably introduced by Hessian soldiers during the Revolutionary War. This insect was given its common name by Americans because of its damage on Long Island in 1779. The pest has become distributed throughout the United States wheat production areas since then. The Hessian fly belongs to the family of insects known as gall midges (Diptera: Cecidomyiidae), a group noted for their habit of …
New Models Of Emergence Traps For Endophytic Egg Parasitoids Capture, Rodrigo Souza Santos Rss
New Models Of Emergence Traps For Endophytic Egg Parasitoids Capture, Rodrigo Souza Santos Rss
Rodrigo Souza Santos RSS
For strain selection studies of natural enemies from the field, studies of behavior or even of taxonomy, capture of alive insects are of great importance. One alternative for obtaining adult parasitoids (Hymenoptera) is the use of emergency traps. Therefore, the objective of this work was to propose two models of emergency traps (traps like “box” and “bottle”), for obtaining alive endophytic egg parasitoids. The two models proposed were efficient in the capture of alive parasitoids, however a larger capture of specimens was observed in the “box” trap in relation to the e “bottle”, due to larger folioles storage inside the …
Diversity And Spatial Distribution Of Ground Arthropods In Agroecosystems, Rodrigo Souza Santos Rss
Diversity And Spatial Distribution Of Ground Arthropods In Agroecosystems, Rodrigo Souza Santos Rss
Rodrigo Souza Santos RSS
The knowledge of the diversity and distribution of ground arthropods contributes for the development of sustainable agricultural systems. This work was carried out at the Paulista State University, Jaboticabal campus, State of São Paulo, Brazil, during the period from February to April 2004. The objective was to analyse the community of Carabidae, Staphylinidae, Formicidae e Araneae through faunistic indexes, to determine the spatial distribution and interespecific interactions of predominant species in soybean (Glycine max (L.) Merr.), corn (Zea mays L.) and rubber tree (Hevea brasiliensis Muell. Arg.). The arthropods were sampled by pitfall traps distributed each 10 m in two …
Occurrence Of Fidicinoides Pauliensis Boulard & Martinelli, 1996 (Hemiptera: Cicadidae) In Coffee Plant In Tapiratiba, Sp, Rodrigo Souza Santos Rss
Occurrence Of Fidicinoides Pauliensis Boulard & Martinelli, 1996 (Hemiptera: Cicadidae) In Coffee Plant In Tapiratiba, Sp, Rodrigo Souza Santos Rss
Rodrigo Souza Santos RSS
This paper presents the first register of Fidicinoides pauliensis Boulard & Martinelli, 1996 in coffee plant in the municipality of Tapiratiba, State of São Paulo, Brazil. The characterization and illustrations of the species are presented.
Ec05-1572 Corn Insects I, Robert J. Wright, Terry A. Devries, James A. Kalisch
Ec05-1572 Corn Insects I, Robert J. Wright, Terry A. Devries, James A. Kalisch
University of Nebraska-Lincoln Extension: Historical Materials
This two-page, 4-color extension circular covers the identification and management of Nebraska corn insects. These include: European corn borer, Western bean cutworm, corn earworm, armyworm, fall armyworm, common stalk borer, and black cutworm.
Nf05-653 Pyemotes Itch Mites, James A. Kalisch, David L. Keith, Alberto R. Broce
Nf05-653 Pyemotes Itch Mites, James A. Kalisch, David L. Keith, Alberto R. Broce
University of Nebraska-Lincoln Extension: Historical Materials
Two North American Species of itch mites — the straw itch mite and the "oak leaf gall mite" (Family Pyemotidae) — are found in Nebraska and Kansas. The straw itch mite was known in the early 1900s as a nuisance pest after farm workers handled small grains. Wheat, oats, and barley were often infested with insects on which the itch mites fed, allowing them to reach large numbers by harvest. The oak leaf gall mite recently discovered in galls on pin oaks in Lincoln, Neb., and Manhattan, Kan., is believed to be a relatively recent introduction to the United States. …
Ec05-1573 Corn Insects Ii, Robert J. Wright, Terry A. Devries, James A. Kalisch
Ec05-1573 Corn Insects Ii, Robert J. Wright, Terry A. Devries, James A. Kalisch
University of Nebraska-Lincoln Extension: Historical Materials
This two-page, 4-color extension circular covers information on Nebraska corn insects identification and management. These include: Western corn rootworm, Northern corn rootworm, seed corn maggot, wireworm, Southern corn leaf beetle, corn leaf aphid, twospotted spider mite, Banks grass mite, corn flea beetle, white grub, annual grub, three year grub, seed corn beetle, and chinch bug.