Routes by which nontarget predatory insects can be exposed to turfgrass pesticides include topical, residual, and dietary exposure. We used each of these routes evaluate potential lethal or sublethal effects two novel insecticides, imidacloprid halofenozide, a carbamate, bendiocarb, on survival, behavior, fecundity the ground beetle Harpalus pennsylvanicus DeGeer. Field-collected carabids were direct spray applications in turf plots, fed food contaminated such applications, irrigated...

Journal Article Hazards of Insecticides to the Bumble Bees Bombus impatiens (Hymenoptera: Apidae) Foraging on Flowering White Clover in Turf Get access Jerome A. Gels, Gels Department Entomology, University Kentucky, Lexington KY 40546-0091 Search for other works by this author on: Oxford Academic PubMed Google Scholar David W. Held, Held Daniel Potter 1 1To whom correspondence should be addressed (e-mail dapotter@ca.uky.edu). Economic Volume 95, Issue 4, August 2002, Pages 722–728,...

Recently, there has been renewed interest in reducing excess inputs into turf, with a special emphasis on water use. One potential mechanism to achieve this goal is the use of plant growth–promoting rhizobacteria (PGPR) applications. Plant research turfgrass limited, but few studies that have conducted show PGPR can reduce biotic and abiotic stress turfgrass. Two creeping bentgrass ( Agrostis stolonifera ) cultivars (Penncross 007) were treated either Blend 20, DH44, water, or nitrogen...

Plant Growth Promoting Rhizobacteria (PGPR) are ubiquitous among soil bacteria and aid in many growth-related functions for plants. Recent biotechnological advancements involving PGPRs have led to a growing desire explore uncover combinatorial or dual use PGPRs. Our study aimed discover novel insecticidal phenotypes amongst PGPR libraries. We screened, through survivorship bioassays, 502 endophytic activity against Drosophila melanogaster (fruit flies). Initial bioassay screens were followed...

Imidacloprid, a chloronicotinyl, and halofenozide, bisacylhydrazine ecdysteroid agonist, recently have become widely used for residual control of scarabaeid grubs in turf. We evaluated their impact on earthworms beneficial arthropods field trials, tested whether application late spring might interfere with subsequent predation black cutworm, Agrotis ipsilon (Hufnagel), Japanese beetle, Popillia japonica Newman, life stages Kentucky bluegrass, Poa pratensis L., Bendiocarb, short-residual...

Ethanol acts as an attractant that aids Xylosandrus germanus (Blandford) in locating living but weakened hosts. Electroantennogram (EAG) and field trapping experiments were conducted with conophthorin other selected semiochemicals function important olfactory cues for various ambrosia beetles to characterize their effect on the attraction of X. ethanol assess whether EAG responses provide indication behavioural activity. Thus, hypothesized enhance (i.e. conophthorin), reduce terpinolene,...

Abstract The use of encapsulated fertilizers and pesticides is a key approach for slowing the release agrochemicals, while simultaneously reducing costs environmental problems. hybrid systems encapsulation in organic‐based agriculture, which enables agrochemicals single application, has been growing field. In this approach, formulation Bacillus‐thuringiensis as bio‐pesticide nitrogen, phosphorus, potassium fertilizer (fish emulsion, nitrate, phosphate) were formulated using superabsorbent...

Effectiveness of companion planting, and use nonhost masking odors were evaluated under field conditions for protecting roses against the Japanese beetle, Popillia japonica Newman. Three reputedly effective species, rue (Ruta graveolens L.), zonal geranium (Pelargonium × hortorum Bailey), garlic chives (Allium scheonparum L.) interplanted with in replicated garden plots. Numbers beetles on these compared rose-only control plots 6 d during beetle flight. The odor hypothesis was tested by...

Silencing genes in insects by introducing double-stranded RNA (dsRNA) the diet holds promise as a new pest management method. It has been demonstrated that nanoparticles (NPs) can potentiate dsRNA silencing effects promoting cellular internalization and protecting against early degradation. However, many mysteries of how NPs are internalized gut epithelial cells and, subsequently, transported across midgut epithelium remain to be unraveled. The sole purpose current study is investigate role...

Turfgrass is an important cropping system covering >16 million hectares in the United States. Synthetic insecticides, which are tools managing several key insect pests these landscapes, have been implicated decline of managed and wild pollinators. The public perception linking use chemical insecticides to pollinator population declines threatens their future our ability maintain functional aesthetically acceptable landscapes. Extension research entomologists from across States met 2016 for...

Nonpathogenic soil bacteria can colonize the rhizosphere and induce unique plant phenotypes that may influence plant-insect interactions. However, few studies have considered influences of bacteria-plant interactions on insect feeding oviposition. The objective this study was to determine how rhizobacterial inoculation bermudagrass affects larval development ovipositional behaviors fall armyworm (Spodoptera frugiperda J.E. Smith). Eight blends rhizobacteria known root or shoot growth in...

Abstract We tested the potential for Japanese beetle, Popillia japonica Newman, to habituate a neem‐based feeding deterrent applied foliage of linden, Tilia cordata L., preferred host adults. Female beetles' consumption control versus treated with either low or high rate neem insecticide, corresponding 9 39 pm azadirachtin, respectively, was in series 4‐h choice no‐choice tests over four successive days. In another experiment, females were conditioned 22 h foliage, leaves rate, mixture both...

Plant growth-promoting rhizobacteria (PGPR) are non-pathogenic, beneficial bacteria that colonize seeds and roots of plants enhance plant growth. Although there has been extensive PGPR research with agronomic crops, little emphasis on development for grasses in pastures or as turf. Accordingly, experiments were conducted to evaluate novel bacterial inoculants growth promotion ‘Tifway’ hybrid bermudagrass. Replicated laboratory greenhouse evaluated effects various mixtures, each 3 5 strains...

Androthrips ramachandrai Karny is an exotic thrips, assumed to be predacious, and associated with gall-inducing thrips. It was first reported in the U.S. from FL, intercepted CA Thailand 2002. We surveyed Ficus spp. Gynaikothrips-induced galls AL, CA, HI, LA, MS, TX, document that A. now established TX. probably has been spread by ornamental horticulture industry. outline its biology compare it a congener flavipes, documented thrips predator. potential beneficial biological control agent...

Inoculation of hybrid bermudagrass with plant growth-promoting rhizobacteria (PGPR) can increase growth and influence relationships above-ground herbivores like fall armyworms. However, few experiments have evaluated PGPR applications relative to root herbivory. Root-feeding white grubs cause severe damage grasses, especially in tall fescue pastures, golf courses, lawns. Since bacterial inoculants enhance growth, the goal this study was determine if inoculation by tolerance from grub...

Journal Article Modified Atmosphere Treatments as a Potential Disinfestation Technique for Arthropod Pests in Greenhouses Get access D. W. Held, Held 1 1Department of Entomology, University Kentucky, S-225 Agricultural Science Building North, Lexington, KY 40546-0091. Search other works by this author on: Oxford Academic PubMed Google Scholar A. Potter, Potter R. S. Gates, Gates 2 2Department Biosystems and Engineering, 128 Engineering Building, 40546-0276. G. Anderson 3 3Department...

The brown widow, Latrodectus geometricus, is one of five species in the United States, and reported to be least dangerous. However, we report a previously healthy patient bitten by resulting serious reaction requiring hospitalization. Symptoms included severe pain, cramps, nausea/vomiting, fasciculations pectoral quadriceps muscles. This signals need re-evaluate held ideas that widow bites are minor consequence.

Predators play a significant role in regulating pest outbreaks turfgrass (Potter 2001). The most common predaceous arthropods recorded from are spiders, predatory beetles (Carabidae and Staphylinidae) (Kunkel et al. 1999; Rothwell & Smitley 1999), hemipterans, ants (Lopez Potter 2003; Frank Shrewsbury 2004a). Natural enemies their effects can be monitored by pitfall traps (e.g., Kunkel 2004a) or exposing prey overnight without direct observation Lopez 2000; Furthermore, studies conducted...