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Articles 1 - 30 of 148
Full-Text Articles in Entire DC Network
Effects Of Insecticide And Tolerant Alfalfa Cultivars On Potato Leafhopper (Empoasca Fabae) Populations And Forage Yields In Quebec (Canada), Philippe Seguin, X. Shi, J. Saguez, Huguette Martel, A. Claessens
Effects Of Insecticide And Tolerant Alfalfa Cultivars On Potato Leafhopper (Empoasca Fabae) Populations And Forage Yields In Quebec (Canada), Philippe Seguin, X. Shi, J. Saguez, Huguette Martel, A. Claessens
IGC Proceedings (1997-2023)
The potato leafhopper [PLH, Empoasca fabae (Harris)], which affects several crops including alfalfa (Medicago sativa L.), is a recurrent problem in several regions of Quebec. The objective was to evaluate alfalfa management tools in order to reduce yield losses caused by this pest. An experiment was conducted at two sites in Quebec over three field seasons to evaluate the impact of insecticide applications and the use of PLHtolerant cultivars on forage yield and PLH populations. Foliar insecticide applications in the seeding year reduced PLH populations but generally failed to impact alfalfa yields compared to untreated alfalfa. However, in one …
Establishment Of Wildflower Islands To Enhance Roadside Health, Ecological Value, And Aesthetics Phase Ii, Jackson Ebbers, Heidi L. Hillhouse, John A. Guretsky, Thomas J. Weissling
Establishment Of Wildflower Islands To Enhance Roadside Health, Ecological Value, And Aesthetics Phase Ii, Jackson Ebbers, Heidi L. Hillhouse, John A. Guretsky, Thomas J. Weissling
Nebraska Department of Transportation: Research Reports
No abstract provided.
Interdisciplinary Team Addresses Cotton Leafroll Dwarf Virus In Alabama, Kassie N. Conner, Edward Sikora, Jenny Koebernick, Marcio Zaccaron
Interdisciplinary Team Addresses Cotton Leafroll Dwarf Virus In Alabama, Kassie N. Conner, Edward Sikora, Jenny Koebernick, Marcio Zaccaron
The Journal of Extension
A multi-state and interdisciplinary team was formed to address the Extension and research needs of CLRDV, an emerging cotton disease with high potential impact for U.S. cotton production. In 2017, CLRDV was identified in AL and Auburn University immediately formed an interdisciplinary working group composed of plant breeders, plant pathologists, entomologists, and agronomists. Since then, scientists from ten other states have joined the CLRDV group. Thus, allowing research to be coordinated efficiently and best deploy limited resources to attend the stakeholder’s needs. The CLRDV group produces and shares new and relevant information with the scientific community and cotton producers alike.
Mapk-Mediated Transcription Factor Gatad Contributes To Cry1ac Resistance In Diamondback Moth By Reducing Pxmalp Expression, Le Guo, Zhouqiang Cheng, Jianying Qin, Dan Sun, Shaoli Wang, Qingjun Wu, Neil Crickmore, Xuguo Zhou, Alejandra Bravo, Mario Soberón, Zhaojiang Guo, Youjun Zhang
Mapk-Mediated Transcription Factor Gatad Contributes To Cry1ac Resistance In Diamondback Moth By Reducing Pxmalp Expression, Le Guo, Zhouqiang Cheng, Jianying Qin, Dan Sun, Shaoli Wang, Qingjun Wu, Neil Crickmore, Xuguo Zhou, Alejandra Bravo, Mario Soberón, Zhaojiang Guo, Youjun Zhang
Entomology Faculty Publications
The benefits of biopesticides and transgenic crops based on the insecticidal Cry-toxins from Bacillus thuringiensis (Bt) are considerably threatened by insect resistance evolution, thus, deciphering the molecular mechanisms underlying insect resistance to Bt products is of great significance to their sustainable utilization. Previously, we have demonstrated that the down-regulation of PxmALP in a strain of Plutella xylostella (L.) highly resistant to the Bt Cry1Ac toxin was due to a hormone-activated MAPK signaling pathway and contributed to the resistance phenotype. However, the underlying transcriptional regulatory mechanism remains enigmatic. Here, we report that the PxGATAd transcription factor (TF) is responsible for the …
B.R. Wells Arkansas Rice Research Studies 2020, J. Hardke, X. Sha, N. Bateman
B.R. Wells Arkansas Rice Research Studies 2020, J. Hardke, X. Sha, N. Bateman
Arkansas Agricultural Experiment Station Research Series
Arkansas is the leading rice producer in the United States. The state represents 47.5% of total U.S. rice production and 48.1% of the total acres planted to rice in 2020. Rice cultural practices vary across the state and across the U.S. However, these practices are also dynamic and continue to evolve in response to changing political, environmental, and economic times. This survey was initiated in 2002 to monitor and record changes in the way Arkansas rice producers approach their livelihood. The survey was conducted by polling county extension agents in each of the counties in Arkansas that produce rice. Questions …
How Weeds Affect Insects In Mango Cultivation Of South Florida, Blaire Kleiman
How Weeds Affect Insects In Mango Cultivation Of South Florida, Blaire Kleiman
FIU Electronic Theses and Dissertations
The use of weeds as insectary plants is an emerging management tactic by agroecologists and entomologists to sustain beneficial insect species. Fallow lands have always been used by insects and are an important part of their diet in fragmented ecosystems. Weeds provide floral resources to beneficial insects such as pollinators, parasitoids, and predators and resources to keep them within a field in between crop flowering. Using weeds as a tool in tropical fruit production reliant on pollination like Mango (Mangifera indica) allows farmers to reduce herbicide use, increases the biodiversity of both plants and insects, and increases pollination of crops …
Lepidopteran Granivory Reduces Seed Counts In A Rare Species Of Riparian Scour Prairies, Cheyenne Moore, Angela J. Mcdonnell, Scott Schuette, Christopher T. Martine
Lepidopteran Granivory Reduces Seed Counts In A Rare Species Of Riparian Scour Prairies, Cheyenne Moore, Angela J. Mcdonnell, Scott Schuette, Christopher T. Martine
Faculty Journal Articles
In Pennsylvania Baptisia australis var. australis is found along only four waterways: the Allegheny River, Youghiogheny River, Clarion River, and Red Bank Creek. Because of its limited distribution and small number of extant populations, the species is considered state-threatened in Pennsylvania. In addition, the riparian prairie habitat that Pennsylvania Baptisia australis var. australis is restricted to is also in decline and considered vulnerable. Because of these conservation concerns, insights into the natural history of the taxon in the state is valuable and will inform conservation efforts. Field surveys and fruit collections along the Allegheny River and herbarium collections were used …
Examining The Efficacy Of Cover Crops As An Integrated Pest Management Tool In Organic Farms In The Lower Rio Grande Valley, Lili M. Martinez
Examining The Efficacy Of Cover Crops As An Integrated Pest Management Tool In Organic Farms In The Lower Rio Grande Valley, Lili M. Martinez
Theses and Dissertations
The Lower Rio Grande Valley (LRGV) consists of a mix in subtropical and costal habitats, a combination that provides a favorable environment for the animals and plants that inhabit it. This is a problem for organic farmers as they refrain from using synthetic chemicals and therefore led them to seek other methods of dealing with insect herbivory. Of the many alternative methods available, we looked specifically at integrated pest management methods (IPM) to determine their efficacy in reducing insect herbivory among cash crops. Chapter II discusses an experiment performed in an organic farm in Edinburg, Texas consisting of a two-year …
Abundance, Diversity And Importance Of Some Insects In Grasslands Of Indian Arid Zone, Nisha Patel
Abundance, Diversity And Importance Of Some Insects In Grasslands Of Indian Arid Zone, Nisha Patel
IGC Proceedings (1997-2023)
Grasslands in arid regions are home to a large number of species of insects, which are well adapted to living in this ecosystem. Insects constitute a major part of the total faunal biodiversity of these grasslands and provide valuable ecosystem services such as pollination, decomposition, nutrient recycling, being important links in the food chain, etc. Diversity of entomofauna is a good criteria for judging the health of a grassland. However this diversity has not yet been properly studied. In the present study, attempt was made to unravel the diversity of some groups of insects in the grasslands of Indian arid …
B.R. Wells Arkansas Rice Research Studies 2018, R. J. Norman, K. A.K. Moldenhauer
B.R. Wells Arkansas Rice Research Studies 2018, R. J. Norman, K. A.K. Moldenhauer
Arkansas Agricultural Experiment Station Research Series
No abstract provided.
The Role Of Disease & Insects In Aspen Ecology, John C. Guyon Ii
The Role Of Disease & Insects In Aspen Ecology, John C. Guyon Ii
Aspen Bibliography
Aspen is a keystone species in montane forests, and enhances a number of key resource values including wildlife habitat, water resources, and fire behavior. Recently, aspen forests have experienced episodes of dieback and decline across western North America (Worrall et al. 2010, Guyon and Hoffman 2011). A large proportion of the dieback and decline has been linked to drought stress or drought-prone locations (Hanna and Kulakowski 2012). However, insects and diseases are commonly found in declining aspen stands, leading to confusion about the role of insects and diseases in aspen ecology. Additionally, aspen has a reputation for being susceptible to …
Fungus Creates Zombie Insects On Dogwood, W. John Hayden
Fungus Creates Zombie Insects On Dogwood, W. John Hayden
Biology Faculty Publications
I have something I need to get off my chest. I have an obsession with, of all things, a fungus! And not just any fungus, but a fungus that infects, I am embarrassed to admit, Flowering Dogwood, the VNPS Wildflower of the Year for 2018. Yes, maybe I’ve gone off my rocker. But this fungus is so cool, so devious, so elegantly convoluted and weird—in a creepy sort of way—that I find myself utterly enthralled. Perhaps sharing my obsession with this fungus will prove therapeutic and permit me to return to my more socially respectable obsessive fascination with plants.
Black Bugbane & The Blues: Interactions Between Our Wildflower Of The Year And The Insect World, W. John Hayden
Black Bugbane & The Blues: Interactions Between Our Wildflower Of The Year And The Insect World, W. John Hayden
Biology Faculty Publications
No, this article has nothing to do with American Roots music. Black Bugbane is one of several common names for the 2017 VNPS Wildflower of the Year, Actaea racemosa. And Blues refers to a subfamily of lycaenid butterflies, commonly referred to as Blues or Azures. The interactions between Black Bugbane, a.k.a., Black Cohosh, Appalachian Azure butterflies (Celastrina neglectamajor), and ants was recently summarized by VNPS charter member and past president Nicky Staunton (2015). In brief, Black Bugbane is the sole food source for caterpillars of Appalachian Azure butterflies, a situation that, superficially, might seem like any other caterpillar and host …
Phytopharmaceuticals In Mongolia: Past, Present, And Future, Disan Gunbilig, Ulziinyam Rentsendorj
Phytopharmaceuticals In Mongolia: Past, Present, And Future, Disan Gunbilig, Ulziinyam Rentsendorj
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
Over the last two decades, the consumption of medicinal plants has increased in Mongolia. Once banned by the post-revolutionary government, it is now valued by the practitioners of orthodox medicine, government as well as by the society. Yet the scientific community has to give this major and crucial component of traditional Mongolian medicine the attention it deserves, scientific knowledge about biologically active principles within medicinal plants remain poorly unknown. At the same time, due to over exploitation of plants many species are becoming extinct together with invaluable traditional knowledge being lost. For these reasons, there is a certain urgency to …
Map Supplements For The Metallic Woodboring Beetles (Coleoptera: Buprestidae) Of Tennessee, William E. Klingeman Iii, Jason A. Hansen, Joshua P. Basham, Jason B. Oliver, Nadeer N. Youssef, Whitney Swink, Christine A. Nalepa, Donna C. Fare, J. Kevin Moulton
Map Supplements For The Metallic Woodboring Beetles (Coleoptera: Buprestidae) Of Tennessee, William E. Klingeman Iii, Jason A. Hansen, Joshua P. Basham, Jason B. Oliver, Nadeer N. Youssef, Whitney Swink, Christine A. Nalepa, Donna C. Fare, J. Kevin Moulton
Plant Sciences Publications and Other Works
Following compilation of distribution records and seasonal flight activity information for 106 metallic wood-boring beetle (Coleoptera: Buprestidae) species for Tennessee, maps were updated to provide county-level collection notations for 10,543 published records and specimen collections made from 1934 to 2013. County collection tallies across the ecoregions in Tennessee are also presented. Maps for individual species highlight gaps in key geographic areas where specimens have not been collected and can be valuable for future biosurveillance, monitoring and management efforts for these economically and ecologically important insects.
Oh No! Something Is Eating My Coral Honeysuckle!, W. John Hayden
Oh No! Something Is Eating My Coral Honeysuckle!, W. John Hayden
Biology Faculty Publications
Let’s imagine a situation that could happen in your own backyard. Suppose you have a healthy specimen of 2014’s Virginia Native Plant Society Wildflower of the Year, coral honeysuckle (Lonicera sempervirens). Suppose further that this plant rewards you every spring with a flush of flashy red flowers that you treasure all the more because they consistently bring hummingbirds to your yard. Now imagine that one fine morning you notice some little green caterpillars voraciously eating the leaves of your beloved coral honeysuckle. What do you do?
Ozonation Systems As A Non-Chemical Alternative For Stored Grain Protection, Carlos A. Campabadal
Ozonation Systems As A Non-Chemical Alternative For Stored Grain Protection, Carlos A. Campabadal
Open Access Dissertations
The use of ozone as a non-chemical alternative in stored grain protection was studied by conducting scale-up demonstrations using a fixed bed ozonation system and developing a semi-continuous counterflow and a continuous flow ozonation treatment system. The objectives of this research were to determine the efficacy of ozonation to control insect pests without affecting end-use quality; to prove the concept of the semi-continuous counterflow ozonation system to ozonate grain at a faster rate and quantify its effect on mold growth reduction; to evaluate the efficacy of a modified screw conveyor for pest control by treating grain in a continuous-flow ozonation …
W 289-P Quickfacts Series: Granulate Ambrosia Beetle, Amy Fulcher, Heather Bowers
W 289-P Quickfacts Series: Granulate Ambrosia Beetle, Amy Fulcher, Heather Bowers
Insects, Pests, Plant Diseases and Weeds
No abstract provided.
W289-K Ipm Quickfacts Series: European Fruit Lecanium Scale, Amy Fulcher, Taylor Cavanaugh, Heather Bowers
W289-K Ipm Quickfacts Series: European Fruit Lecanium Scale, Amy Fulcher, Taylor Cavanaugh, Heather Bowers
Insects, Pests, Plant Diseases and Weeds
No abstract provided.
W289-F Ipm Quickfacts Series: Rust Diseases, John Hartman, Amy Fulcher, Heather Bowers
W289-F Ipm Quickfacts Series: Rust Diseases, John Hartman, Amy Fulcher, Heather Bowers
Insects, Pests, Plant Diseases and Weeds
No abstract provided.
W289-G Verticillium Wilt, Amy Fulcher, Heather Bowers
W289-G Verticillium Wilt, Amy Fulcher, Heather Bowers
Insects, Pests, Plant Diseases and Weeds
No abstract provided.
W289-A Ipm Quickfacts Series: Fire Blight, Amy Fulcher, Heather Bowers
W289-A Ipm Quickfacts Series: Fire Blight, Amy Fulcher, Heather Bowers
Insects, Pests, Plant Diseases and Weeds
No abstract provided.
W289-D Ipm Quickfacts Series: Phytophthora Root Rot, Amy Fulcher, Heather Bowers
W289-D Ipm Quickfacts Series: Phytophthora Root Rot, Amy Fulcher, Heather Bowers
Insects, Pests, Plant Diseases and Weeds
No abstract provided.
W289-C Ipm Quickfacts Series: White Peach Scale, Amy Fulcher, Heather Bowers
W289-C Ipm Quickfacts Series: White Peach Scale, Amy Fulcher, Heather Bowers
Insects, Pests, Plant Diseases and Weeds
No abstract provided.
W 289-J Ipm Quickfacts Series: Potato Leafhopper, Amy Fulcher, Heather Bowers
W 289-J Ipm Quickfacts Series: Potato Leafhopper, Amy Fulcher, Heather Bowers
Insects, Pests, Plant Diseases and Weeds
No abstract provided.
W289-E Ipm Quickfacts Series: Calico Scale, Amy Fulcher, Heather Bowers
W289-E Ipm Quickfacts Series: Calico Scale, Amy Fulcher, Heather Bowers
Insects, Pests, Plant Diseases and Weeds
No abstract provided.
W289-B Ipm Quickfacts Series: Bacterial Leaf Scorch, Amy Fulcher, Heather Bowers
W289-B Ipm Quickfacts Series: Bacterial Leaf Scorch, Amy Fulcher, Heather Bowers
Insects, Pests, Plant Diseases and Weeds
No abstract provided.
W289-I Ipm Quickfacts Series: Tuliptree Scale, Amy Fulcher, Taylor Cavanaugh, Heather Bowers
W289-I Ipm Quickfacts Series: Tuliptree Scale, Amy Fulcher, Taylor Cavanaugh, Heather Bowers
Insects, Pests, Plant Diseases and Weeds
No abstract provided.
The Role Of Ascorbic Acid In The Plant-Herbivore Interaction, Kelly Ann Carruthers
The Role Of Ascorbic Acid In The Plant-Herbivore Interaction, Kelly Ann Carruthers
Graduate Theses and Dissertations
Ascorbic acid (AsA), vitamin C, is an important molecule that is vital for both human and plant health, because it aids in the detoxification of reactive oxygen species (ROS) caused by various abiotic and biotic stresses including UV, salinity, ozone, and attack from pathogens In order to understand the role of AsA in the plant-herbivore interaction, we looked at the effects of the wound-responsive hormones, jasmonate, wounding, and herbivory on AsA content. Our study is the first to directly compare the effects of wounding and jasmonates on AsA levels in plants. We looked at the effects of wounding and methyl …
Sp341-F Insects: Periodical Cicadas, Frank A. Hale
Sp341-F Insects: Periodical Cicadas, Frank A. Hale
Insects, Pests, Plant Diseases and Weeds
No abstract provided.