Entomology Commons^™

Field Efficacy Of Soil Insecticides On Pyrethroid-Resistant Western Corn Rootworms (Diabrotica Virgifera Virgifera Leconte), Dariane Souza, Julie A. Peterson, Robert Wright, Lance Meinke

Department of Entomology: Faculty Publications

Background: Field-evolved pyrethroid resistance has been confirmed in western corn rootworm (WCR) populations collected from the United States (US) western Corn Belt. Resistance levels of WCR adults estimated in lab bioassays were confirmed to significantly reduce the efficacy of foliar-applied bifenthrin. The objective of the present study was to investigate the impact of WCR pyrethroid resistance levels on the performance of common soil-applied insecticide formulations (23.4% tefluthrin, 17.15% bifenthrin, and 0.1% cyfluthrin+2.0% tebupirimphos). Field trials were conducted in 2016 and 2017 in three Nebraska, US, counties (Saunders, Clay, and Keith) where distinct levels of WCR susceptibility topyrethroids (susceptible, moderately resistant, …

Arthropod Resistant Tomatoes: Screening Tools, Yield And Nutritional Quality Of Interspecific Hybrids, Mohammad Hasan Salman Ali Dawood

Theses and Dissertations--Plant and Soil Sciences

Tomato (Solanum lycopersicum) is one of the most economically important vegetable crops grown around globe but is a host for numerous pests and pathogens. In the future, tomato breeders will have to focus on increasing fruit quantity and on enhancing pest resistance. Many accessions of the wild relative of tomato, S. habrochaites display high levels of resistance towards arthropods such as spider mites. The presence of the sesquiterpene hydrocarbon, 7-epi-zingiberene, found in S. habrochaites type IV trichomes has been associated with arthropod resistance. However, the presence of other compounds in its trichome secretions may also be related …

Control Of Western Corn Rootworm Via Rnai Traits In Maize: Lethal And Sublethal Effects Of Sec23 Dsrna, Ana Maria Vélez, Elane Fishilevich, Murugesan Rangasamy, Chitvan Khajuria, David Mccaskill, Adriano E. Pereira, Premchand Gandra, Meghan L.F. Frey, Sarah Worden, Shannon Whitlock, Wendy Lo, Karl D. Schnelle, Jamie R, Lutz, Kenneth E. Narva, Blair Siegfried

Department of Entomology: Faculty Publications

Background: RNA interference (RNAi) triggered by maize plants expressing RNA hairpins against specific western corn rootworm ( WCR) transcripts have proven to be effective at controlling this pest. To provide robust crop protection, mRNA transcripts targeted by double-stranded RNA must be sensitive to knockdown and encode essential proteins.

Results: Using WCR adult feeding assays, we identified Sec23 as a highly lethal RNAi target. Sec23 encodes a coatomer protein, a component of the coat protein

(COPII) complex that mediates ER-Golgi transport. The lethality detected in WCR adults was also observed in early instar larvae, the life stage causing most …

Integrated Crop–Livestock Systems In Paddy Fields: New Strategies For Flooded Rice Nutrition, Luiz Gustavo De O. Denardin, Amanda P. Martins, Felipe De C. Carmona, Murilo G. Veloso, Gabriela I. Carmona, Paulo César De F. Carvalho, Ibanor Anghinoni

Department of Entomology: Faculty Publications

Integrated crop–livestock systems (ICLSs) appear as a good alternative to increase nutrient use efficiency (NUE) in rice (Oryza sativa L.) through the improvement in nutrient cycling and soil chemical attributes in paddy fields. The objective of this study was to evaluate the impact of an ICLS on soil chemical attributes and on the fertilization requirement of N, P, and K by flooded rice in the Brazilian subtropical region. Nutritional status, yield, and NUE of flooded rice were evaluated by fertilization trials through rice response to different fertilization rates of N, P, and K. Soil chemical attributes were evaluated at …

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.

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

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: 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: 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.

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.

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.

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 …

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.

Nebline, November/December 2019

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

4-H Horse Program Grows Youth for Life

Thanksgiving Food Safety

Recipe of the Month

Successful Farmer Series Starts Jan. 10

Produce Safety Workshop, Nov. 19

Pesticide Applicator Trainings

Upcoming Green Industry Conferences

A New Can of Worms: Asian Jumping Worms

Use Caution to Avoid Deer-Vehicle Collisions

Reuse Your Fresh Cut Christmas Tree for Wildlife

Gifts For The Gardener

Garden Guide: Things to Do This Month

High-Quality Child Care Depends on Effective Family Engagement

Heart of 4-H Volunteer Award: Beverlee Keller

Heart of 4-H Volunteer Award: Dave Hattan

4-H Video Companion Animal Showmanship Contest Results

Outgoing 4-H Council Members

2019 4-H …

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 …

Nebline, October 2019

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Groundwater Protection: It’s Up to Everyone

The Nutritional Power of Pumpkins

Recipe of the Month

Sulfur Deficiency in Corn

Planting Garlic in the Fall Vegetable Garden

Composting Demonstrations

I Spy a Spider: Common Spiders Around the Home

Invasive Species: American Bullfrog

Plant Spring Bulbs for Pollinators

Garden Guide: Things to Do This Month

Become a Master Gardener

Chatting With Babies Helps Brain Development

Heart of 4-H Volunteer Award: Kelsey Ebke

4-H Golf Tournament Fundraiser, Sept. 29

4-H Specialty Clubs Invite New Members

4-H Announcements for 4-H'ers and Volunteers

State Fair 4-H Top Results

Lancaster County 4-H Quilt of Valor Presented …

Insect Population Dynamics, Varietal Preference And Performance Of Organic Bio-Pesticides, Anitha Chitturi, Jeanine Davis, Margaret Bloomquist, Franklin Quarcoo, Kokoasse Kpomblekou-A, Desmond Mortley

Professional Agricultural Workers Journal

Abstract

Organic farming prohibits use of synthetic agrochemicals and encourages use of Integrated Pest Management (IPM) methods. States in the Southeastern US generally lag behind the rest of the country in organic vegetable production partly because of high insect pressures that make it difficult to grow vegetables without pesticides. This study on summer squash (Cucurbita pepo), grown using organic management practices, was conducted at a research station located in Mills River, North Carolina. The objectives of the study were to assess insect population dynamics and to evaluate performance of three OMRI-approved bio-pesticides: Azadirachtin, Pyrethrin and Spinosad against major …

Nebline, September 2019

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Read for Resilience Program Helps Young Children Cope After a Disaster

Breakfast — Don’t Leave Home Without It!

Recipe of the Month

Grazing Calves on Annual Forages

Sheet Composting Requires No Turning

Composting Demonstrations

Prepared, Not Scared. Be Ready for Disasters

Plant Asters for Fall Color

Garden Guide: Things to Do This Month

The Lowdown on Lyme Disease

Heart of 4-H Volunteer Award: Brenda Nepper

4-H Teen Council Invites New Members

Support 4-H by Dining at Chipotle on O Street, Sept. 16

New Horticulture 4-H Club Meeting, Sept. 19

4-H Golf Tournament Fundraiser, Sept. 29

Interested in Joining 4-H? Come …

Integrated Pest Management In The Academic Small Greenhouse Setting: A Case Study Using Solanum Spp. (Solanaceae)., Daniel S. Hayes, Ingrid E. Jordon-Thaden, Jason T. Cantley, Angela J. Mcdonnell, Christopher T. Martine

Faculty Journal Articles

Premise

Botanical faculty and staff at academic institutions are often tasked with establishing and/or caring for plant collections held in small greenhouse facilities. Once plants are in place, an especially acute challenge is managing plant pest/pathogen populations. Integrated pest management (IPM) approaches are an excellent option, but few examples exist in the literature of successful programs that have been developed in academic small greenhouse settings.

Methods and Results

Over several years, we developed an IPM program for two small research greenhouses on the campus of a primarily undergraduate institution where hundreds of plants have been grown for studies in the …

Nebline, August 2019

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Kids Eat Right Month

Food Safety Tips for Electric Multi-Cookers

Recipe of the Month

Soybean Management Field Days

Landlord–Tenant Cash Rent Workshop, Aug. 21

Fall is Best for Control of Tough Weeds

Free Water Screening for Nitrates

Include Pets in Your Emergency Plan

Going Batty: Bugs on Bats

Make Your Yard a Greener Place

Garden Guide: Things to Do This Month

Tips for a Fun and Educational Day at the Fair

Upcoming Early Childhood Trainings

Heart of 4-H Volunteer Award: Susan Holland

4-H’ers Test Family and Consumer Science and Entrepreneurship Skills at Life Challenge

4-H’ers Test Their Knowledge of Animals …

Nebline, July 2019

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Nebraska’s Bad Buzz: What You Need to Know About Mosquitoes and West Nile Virus

Summertime Snacking With Salsa

Recipes of the Month

Weather Challenges Keep Coming

Block Play Encourages Children’s Development in Multiple Areas

Extension Offers “Block Party” for Childcare Programs

Upcoming Early Childhood Trainings

My Personal Experience With West Nile Virus

Check Landscape Plants for Bagworms

Garden Guides: Things to Do This Month

Greener Town Grant Applications Due Aug. 31

HEART OF 4-H VOLUNTEER AWARD: Kylee Yakel

SUPER FAIR 4-H/FFA ANIMAL ENTRIES MUST BE SUBMITTED ONLINE BY JULY 1

11 4-H Clubs Helped at Kiwanis Karniva

Many Ways to …

Nebline, June 2019

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Understanding How Climate Change Affects Nebraska and Agriculture

Are You Drinking or Eating Enough Dairy Foods for the Health Benefits?

Recipe of the Month

Floods and Trees: Helping Trees Recover

Pretty Things That Pollinate

Perennial Plants for Pollinators

Garden Guide: Things to Do This Month

Pollinator Week: June 17–23

Upcoming Early Childhood Trainings

Nebraska Early Development Network

HEART OF 4-H Volunteer: Glenda Willnerd

JUNE 15 DEADLINE: 4-H Member Online Enrollment; Youth for the Quality Care of Animals Requirements for ANY Livestock Exhibitor; 4-H Projects Updated; Volunteer Online Enrollment; 4-H/FFA Animal IDs

4-H Sewing Help

4-H Clover Kids Animal Showmanship Change …

Nebline, May 2019

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

25 Years of Earth Wellness Festival: A Generation of Students Have Learned Value of Environmental Resources

Malcolm 4th Graders Learn About Healthy Choices

Recipe of the Month

2019 Cash Rent Survey

Bagworm Control in Windbreaks

Choosing the Best Bug Spray to Protect Your Family From Mosquitoes and Ticks

2019 Herb of the Year

Garden Guide Things to Do This Month

Children and Mindful Eating

Heart of 4-H Volunteer Award: Susan Martin

Babysitting Training, June 18

4-H Announcements for 4-H'ers and Volunteers

Clover College

Upcoming Landscape Workshops

Extension News: New Domestic Water and Wastewater Extension Associate

Extension News: Two New Interns …

Nebline, March 2019

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Emerald ash borer in Lancaster County: What to do now

Eat more dark-green veggies for St. Patrick’s Day and beyond

Recipe of the Month

Ag Estate Planning Workshop, March 5

Farmland Rent Meeting, March 14

Dicamba training, March 12

Early spring pest control for evergreen trees

Dropping like flies

Spring bird behaviors can be fascinating

2019 vegetable All-America Selections winners

Garden Guide Things to Do This Month

Addressing implicit bias

Upcoming early childhood trainings

Lincoln Early Childhood Conference

Heart of 4-H Volunteer Award: Lois Muhlbach

4-H Achievement Celebration

Pick-A-Pig club first meeting, March 17

Rabbit Show, April 27

4-H camps …

Nebline, April 2019

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Two Extension Programs Help Grow Lincoln’s Healthy Environment

Double Up Food Bucks

Choose Healthy Here

Focus on Moving More in April

Recipe of the Month

Field Conditions and Planting

Beneficial Fungi and Tree Health

Response to Bed Bugs: Panic vs. Reasonable Actions

Cleaning Up After Rodents

2019 Perennial Plant of the Year

Garden Guide Things to Do This Month

Laugh Out Loud — Developing Humor in Children

Upcoming Early Childhood Trainings

HEART OF 4-H-Megan Starner

Kiwanis Karnival, April 12

Horse Bits

Teen Council 4-H’ers Are True Leaders at 4-H Lock-In

New in 4-H at Super Fair

Youth for the Quality …

Lepidopteran Diversity And Abundance Across Five Different Indigenously Managed Land Use Zones In The Naso-Teribe Territory, Bocas Del Toro Province, Panama, Eli Dotson

Independent Study Project (ISP) Collection

Lepidopterans, the order that includes both moths and butterflies, are among the best-known insects taxonomically and ecologically due to the relative ease of monitoring them in comparison to other groups of insects. Their distribution follows that of other insects and forms of life, as around 90% of species have a tropical distribution. This incredibly speciose group of animals fills many vital roles in the ecosystems they inhabit, including herbivores in their larval stages, prey for a variety of predators in all life stages, and pollinators for many plant species as adults. In some circumstances, certain species may also serve as …

Nebline, February 2019

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

EFNEP celebrates 50 years of nutrition education

Tips to lower your risk for heart disease

Recipe of the Month

Pesticide applicator trainings

Successful Farmer Series runs through Feb. 8

Nut Orchard Seminar, Feb. 21

ProHort Lawn & Landscape Update

More than drugs and tobacco: Drugstore and cigarette beetles

Now’s the time to get birdhouses ready for spring

2019 flower All-America Selections

Garden Guide Things to Do This Month

What’s going on in the world of early childhood?

Upcoming early childhood trainings

HEART OF 4-H Volunteer Award: Travis Hodtwalker

Meet 2018–2019 4-H Teen Council

IT’S TIME TO RE-ENROLL IN 4-H!

Seeking …

Residues Of Thiamethoxam And Mefenoxam In Vegetative And Floral Tissue Of Soybean At The Early Reproductive Stage Resulting From Seed Treatments, Carolina Camargo, Daniel D. Snow, Sathaporn Onanong, Thomas Hunt, Blair Siegfried

Department of Entomology: Faculty Publications

Thiamethoxam with mefenoxam is the most widely used neonicotinoid insecticide/fungicide mixture applied to soybean (Glycine max [L]) as seed treatments. Based on the systemic nature of thiamethoxam and mefenoxam, residues of this insecticide/fungicide mixture may be present in soybean vegetative and floral tissue and negatively impact beneficial insects. Although neonicotinoids are often applied in combination with systemic fungicides, the research on ecological risks of neonicotinoids has been focused on the analysis of these compounds without considering their interaction with other agrochemicals. The objective of this study was to identify the concentration of thiamethoxam and mefenoxam in soybean flowers and …

Trap Tree And Interception Trap Techniques For Management Of Ambrosia Beetles (Coleoptera: Curculionidae: Scolytinae) In Nursery Production Get Access Arrow, Karla M. Addesso, Jason B. Oliver, Nadeer N. Youssef, Paul A. O'Neal, Christopher Ranger, Michael E. Reding, Peter B. Schultz, Christopher T. Werle

Agricultural and Environmental Sciences Faculty Research

The majority of wood-boring ambrosia beetles are strongly attracted to ethanol, a behavior which could be exploited for management within ornamental nurseries. A series of experiments was conducted to determine if ethanol-based interception techniques could reduce ambrosia beetle pest pressure. In two experiments, trap trees injected with a high dose of ethanol were positioned either adjacent or 10–15 m from trees injected with a low dose of ethanol (simulating a mildly stressed tree) to determine if the high-dose trap trees could draw beetle attacks away from immediately adjacent stressed nursery trees. The high-ethanol-dose trees sustained considerably higher attacks than the …

Contents, Discovery Editors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.