| confirmation of bean leaf beetle, cerotoma trifurcata, feeding on cucurbits. | the objective of these studies was to assess the degree to which bean leaf beetle, cerotoma trifurcata (forster), will feed on cucurbits. in 2003, we documented an infestation of c. trifurcata in a commercial pumpkin field near rosemount, mn, usa. to evaluate c. trifurcata feeding on cucurbits, we conducted laboratory no-choice and choice test feeding studies. in the laboratory, c. trifurcata fed most heavily on cotyledon-stage cucumber plants, followed by pumpkin and squash. with soybean plants ... | 2004 | 15861221 |
| pyrethroid insecticide tolerance in bean leaf beetle, cerotoma trifurcata, in the mississippi delta. | pyrethroid insecticides have historically been effective for controlling bean leaf beetles in soybeans. perceived field efficacy in the mississippi delta region has been lower over the past several years. laboratory and field data were collected to determine whether there has been a reduction in pyrethroid insecticide susceptibility. | 2012 | 22052768 |
| climate and host plant availability impact the future distribution of the bean leaf beetle (cerotoma trifurcata). | the bean leaf beetle, cerotoma trifurcata, has become a major pest of soybean throughout its north american range. with a changing climate, there is the potential for this pest to further expand its distribution and become an increasingly severe pest in certain regions. to examine this possibility, we developed bioclimatic envelope models for both the bean leaf beetle, and its most important agronomic host plant, soybean (glycine max). these two models were combined to examine the potential futu ... | 2014 | 24616016 |
| evaluation of management strategies for bean leaf beetles (coleoptera: chrysomelidae) and bean pod mottle virus (comoviridae) in soybean. | cerotoma trifurcata förster (coleoptera: chrysomelidae) and bean pod mottle virus (comoviridae) (bpmv) both can reduce yield and seed quality of soybean, glycine max (l.) merr. field experiments were conducted to evaluate the effects of systemic, seed-applied, and foliar-applied insecticides for the management of this pest complex at three locations in central, northeastern, and northwestern iowa during 2002-2004. seed-applied insecticide was evaluated according to a currently recommended manage ... | 2008 | 18767730 |
| no-choice preference of cerotoma trifurcata (coleoptera: chrysomelidae) to potential host plants of bean pod mottle virus (comoviridae) in iowa. | to better understand the naturally occurring host range of bean pod mottle virus (family comoviridae, genus comovirus, bpmv) and its principal vector cerotoma trifurcata (förster) (coleoptera: chrysomelidae), 18 field-collected perennial plant species were tested for the presence of bpmv. by using no-choice assays, we determined the preference of these plants by bean leaf beetle, by measuring their level of herbivory relative to soybean, glycine max (l.). new food hosts for adult bean leaf beetl ... | 2007 | 17598542 |
| bean leaf beetle (coleoptera: chrysomelidae) management for reduction of bean pod mottle virus. | bean pod mottle virus (bpmv) is a management concern for soybean, glycine max (l.), producers in the north central states because it can cause yield loss and reduce seed quality by induction of seed coat mottling. the main vector of bpmv is the bean leaf beetle, cerotoma trifurcata (forster). an experiment was conducted in 2000 and 2001 at two locations in northwestern and central iowa to test three insecticide treatments for suppression of bean leaf beetles, and subsequently, bpmv. treatments o ... | 2004 | 15154436 |
| imported longhorned weevil (coleoptera: curculionidae) injury to soybean: physiological response and injury guild-level economic injury levels. | the imported longhorned weevil, calomycterus setarius roelofs, is an occasional pest of soybean, glycine max (l.), and can cause substantial defoliation of seedling soybean when the weevil is present in large numbers. because weevil populations can reach high levels, the potential exists for significant seedling injury, so economic injury levels (eils) are needed for imported longhorned weevil on seedling soybean. because the bean leaf beetle, cerotoma trifurcata (forster), also is present on se ... | 2003 | 14503588 |
| phytoecdysteroids as antifeedants towards several beetles that include polyphagous and monophagous feeding guilds. | plants are thought to produce ecdysteroids as a means of protection from insect herbivores. some insects will not feed on plants containing high amounts of phytoecdysteroids, and this response could be limited to monophagous and oligophagous insects. the aim of this study was to determine whether phytoecdysteroids could inhibit feeding in several species of beetles that range from monophagous to polyphagous. | 2016 | 27976533 |
| field resistance of two soybean germplasm lines, hc95-15mb and hc95-24mb, against bean leaf beetle (coleoptera: chrysomelidae), western corn rootworm (coleoptera: chrysomelidae), and japanese beetles (coleoptera: scarabaidae). | two recently released, mexican bean beetle, epilachna varivestis, mulsant, resistant soybean, glycine max (l.) merrill, germplasm lines, hc95-15mb and hc95-24mb, were examined for foliar and pod feeding resistance to adult bean leaf beetles, cerotoma trifurcata (forster), western corn rootworms, diabrotica virgifera virgifera leconte, and japanese beetles, popillia japonica newman. both lines were planted along with a susceptible control cultivar in 18 by 30-m plots and separate 0.8-ha size fiel ... | 2001 | 11777070 |
| cross-resistance and resistance longevity as induced by bean leaf beetle, cerotoma trifurcata and soybean looper, pseudoplusia includens herbivory on soybean. | cross-resistance, and longevity of resistance, induced by the bean leaf beetle, cerotoma trifurcata, was studied in the soybean pi 227687 that exhibited induced response in earlier studies. bean leaf beetle adults and soybean looper, pseudoplusia includens, larvae were used to induce resistance and to determine beetle feeding preference. beetles were collected from soybean fields 2 to 5 days prior to the feeding preference test. the level of cross-resistance induced by soybean looper herbivory t ... | 2001 | 15455065 |
| phenology and abundance of bean leaf beetle (coleoptera: chrysomelidae) in eastern south dakota on alfalfa and soybean relative to tillage, fertilization, and yield. | phenology and abundance of bean leaf beetles, cerotoma trifurcata (förster), were examined throughout two eastern south dakota growing seasons in relation to grain yields in chisel- and ridge-tilled soybeans [glycine max (l.) merrill] grown in 2-yr rotation with corn (zea mays l.) with and without added nitrogen (n). populations were also sampled early and late season in alfalfa (medicago sativa l.). beetles were present in alfalfa by late may and most were reproductively active within a week, b ... | 2010 | 20550786 |
| is preventative, concurrent management of the soybean aphid (hemiptera: aphididae) and bean leaf beetle (coleoptera: chrysomelidae) possible? | in iowa, the management of insect pests in soybean, glycine max (l.) merr., has been complicated by the arrival of the invasive species soybean aphid, aphis glycines matsumura (hemiptera: aphididae), and occasional outbreaks of bean leaf beetle, cerotoma trifurcata (förster) (coleoptera: chrysomelidae), populations leading to economic losses. several insecticide programs designed to reduce abundance of the overwintered and first generation c. trifurcata and the incidence of bean pod mottle virus ... | 2008 | 18613581 |
| the probabilistic economic injury level: incorporating uncertainty into pest management decision-making. | despite the recognition that the economic injury level (eil) is determined by dynamic biological and economic parameters, which can be highly variable and uncertain, there has been little effort to quantify uncertainty and to use estimates of uncertainty in the determination of eils. in this paper, we define the probabilistic eil (peil) and develop peils for two insect pest scenarios: alfalfa weevil larvae, hypera postica (gyllenhal), on early bud-stage alfalfa, and bean leaf beetle adults, cero ... | 2003 | 12852585 |
| population structure, genetic variability, and gene flow of the bean leaf beetle, cerotoma trifurcata, in the midwestern united states. | bean leaf beetle, cerotoma trifurcata (forster) (coleoptera: chrysomelidae), is a common pest of soybean in the midwest united states. however, there are currently no reports on the genetic variability of c. trifurcata. this study examined 15-30 individuals from 25 sample locations to estimate genetic variability and gene flow within and among c. trifurcata from across the mid- west. amplified fragment length polymorphism generated 175 markers for analyses. results from analysis of molecular var ... | 2014 | 25373209 |
| effect of trichome density on soybean pod feeding by adult bean leaf beetles (coleoptera: chrysomelidae). | the role of soybean, glycine max (l.) merrill, pod trichomes on feeding by adult bean leaf beetles. cerotoma trifurcata (forster), was evaluated under laboratory and field conditions during 1997 and 1998. three clark isolines and 'corsoy 79' were used to compare the feeding preference of the beetle on pods with different trichome densities. the three clark isolines, including densely pubescent, sparsely pubescent, and glabrous, were isogenic except for trichome density. the trichome densities on ... | 2001 | 11777049 |