An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Brandt Berghuis; Andrew Friskop; Michelle Gilley; Jessica Halvorson; Bryan Hansen; Scott Fitterer; Dave Carruth; Blaine Schatz; Bob Benson; Ryan Humann; Samuel Markell
fungicideresistance, etc ; Helianthus annuus; Puccinia helianthi; acreage; fungicides; hybrids; oilseeds; plant health; sweets; Show all 9 Subjects
Abstract:
... Sunflower rust, caused by Puccinia helianthi, is an economically and globally important disease of sunflower. Two types of sunflower are produced in the U.S. Northern Great Plains: the oilseed type and the confection type. Although approximately 80% of the acreage in this region is planted as the oilseed-type sunflower, fungicide efficacy and timing studies have been conducted primarily on the mor ...
fungicideresistance, etc ; chemical control; ecological footprint; ecotoxicology; fungicides; nanoparticles; phytotoxicity; plant protection; pollution; xenobiotics; Show all 10 Subjects
Abstract:
... Chemical control suffers from the loss of available conventional active ingredients due to strict environmental safety regulations which, combined with the loss of fungicide efficacy due to resistance development, constitute major problems of contemporary crop protection. Metal‐containing nanoparticles (MNPs) appear to have all the credentials to be next‐generation, eco‐compatible fungicide altern ...
fungicideresistance, etc ; Fusarium graminearum; carbendazim; fungicides; grain quality; international trade; microbiology; mycotoxins; sanitation; triazoles; Show all 10 Subjects
Abstract:
... Fusariosis affects cereal grain crops worldwide and is responsible for devastating crops, reducing grain quality and yield, and producing strong mycotoxins. Benzimidazoles and triazoles were recommended to combat fusariosis; however, there were reports of resistance, making it necessary to reflect on the reasons for this occurrence. The purpose of this review was to evaluate the fusariosis resista ...
Dimitry Wintermantel; Maria-Helena Pereira-Peixoto; Nadja Warth; Kristin Melcher; Michael Faller; Joachim Feurer; Matthew J. Allan; Robin Dean; Giovanni Tamburini; Anina C. Knauer; Janine Melanie Schwarz; Matthias Albrecht; Alexandra-Maria Klein
fungicideresistance, etc ; Bombus terrestris; Phacelia; adults; body weight; buckwheat; environment; fecundity; flight; fungicides; risk; Show all 11 Subjects
Abstract:
... Bees are exposed to various stressors, including pesticides and lack of flowering resources. Despite potential interactions between these stressors, the impacts of pesticides on bees are generally assumed to be consistent across bee-attractive crops, and regulatory risk assessments of pesticides neglect interactions with flowering resources. Furthermore, impacts of fungicides on bees are rarely ex ...
fungicideresistance, etc ; Microdochium; Monographella nivalis; climate; growth retardation; pathogens; propiconazole; research; risk; turf grasses; British Columbia; Ontario; Show all 12 Subjects
Abstract:
... Turfgrass managers have anecdotally reported decreased efficacy of DMI fungicides for the control of Microdochium patch and pink snow mold at golf courses in British Columbia, Canada. Isolates of Microdochium nivale from these locations, along with isolates collected in Ontario, Canada, were tested for their sensitivity to the fungicide propiconazole [1‐([2‐(2,4‐dichlorophenyl)‐4‐propyl‐1,3‐dioxol ...
fungicideresistance, etc ; consumer demand; cultivars; disease control; epidemiology; fruits; fungi; fungicides; peaches; resistance management; risk; Southeastern United States; Show all 12 Subjects
Abstract:
... Due to weather conditions during the growing season that are often conducive for infection, peach crop disease management is an important aspect for the production of high-quality fruit in the southeastern United States. Fungicide and bactericide applications and resistance management strategies are important components of the integrated approach applied to manage fungal and bacterial diseases. A ...
Jelena Luković; Ivana Potočnik; Ljiljana Šantrić; Ljiljana Radivojević; Biljana Todorović; Svetlana Milijašević-Marčić; Attila Szűcs; László Kredics; Csaba Vágvölgyi; Lóránt Hatvani
... After an outbreak of cobweb disease of cultivated button mushroom in Serbia in 2003, the isolated fungal pathogen was initially identified as Cladobotryum dendroides (teleomorph Hypomyces rosellus) based on morpho-physiological traits. Molecular analysis indicated re-classification of two strains (isolated in 2004 and 2007) as Cladobotryum mycophilum (teleomorph Hypomyces odoratus). However, subse ...
fungicideresistance, etc ; diagnostic techniques; disease control; food security; mechanism of action; pathogens; plant pathology; plant protection; resistance management; risk; Show all 10 Subjects
Abstract:
... Effective crop protection is vital to safeguard food security, but growers are reliant on a limited toolbox in the face of diverse and evolving pathogens. New crop protection methods need to be developed, but it is also important to prolong the effective life of existing products through resistance management. Some core principles in fungicide resistance management, such as using different modes o ...
fungicideresistance, etc ; Phytophthora infestans; Solanum tuberosum; cultivars; metalaxyl; oospores; pathogens; phenotypic variation; potatoes; sexual reproduction; temporal variation; virulence; Estonia; Show all 13 Subjects
Abstract:
... Long-term site-specific studies describing changes in the phenotypic variability of Phytophthora infestans populations allow quantitative predictions of pathogen spread and possible outbreaks of epidemics, and provide key input for regional resistance breeding programs. Late blight samples were collected from potato (Solanum tuberosum) breeding fields in Estonia during a twelve-year study period b ...
... Frogeye leaf spot, caused by Cercospora sojina, is an important foliar disease of soybean (Glycine max) in the United States. Application of quinone outside inhibitor (QoI) fungicides has been an important management tool available to farmers to help manage this disease, but in 2010, C. sojina isolates with resistance to QoI fungicides were first discovered in Tennessee and then additional states ...
fungicideresistance, etc ; boscalid; conidia; fenhexamid; fludioxonil; gray mold; multiple drug resistance; pathogens; phenotype; plant pathology; pyraclostrobin; pyrimethanil; strawberries; Norway; Show all 14 Subjects
Abstract:
... Control of grey mould, caused by Botrytis spp., is a major challenge in open field strawberry production. Botrytis was isolated from plant parts collected from 19 perennial strawberry fields with suspected fungicide resistance in the Agder region of Norway in 2016. Resistance to boscalid, pyraclostrobin and fenhexamid was high and found in 89.1%, 86.0% and 65.4% of conidia samples, respectively. M ...
... Cercospora leaf spot (CLS) caused by Cercospora beticola is the most destructive foliar disease of sugar beet worldwide and is mainly controlled by timely fungicide applications. Recently, CLS control by pyraclostrobin exhibited significantly reduced efficiency in some fields of the Chifeng area in Inner Mongolia Autonomous Region of China. Purification of fungi by single spore isolation is essent ...
fungicideresistance, etc ; Diaporthe amygdali; active ingredients; almonds; carbendazim; cross resistance; diethofencarb; genes; germination; mutation; mycelium; pathogens; peaches; plant pathology; thiophanate-methyl; Show all 15 Subjects
Abstract:
... In light of growing environmental concerns, surveys of fungicide resistance are needed to ensure efficient control of fungi and avoid unnecessary treatments. Investigations of fungicide resistance in Fusicoccum amygdali are scarce despite the economic impacts of this pathogen in peach and almond orchards. Thiophanate‐methyl has been registered for more than 20 years to control F. amygdali but no r ...
fungicideresistance, etc ; Vitis; amino acids; benzimidazole; dieback; fungi; genes; horticulture; internal transcribed spacers; kiwifruit; phylogeny; plant protection; spores; thiophanate-methyl; South Korea; Show all 15 Subjects
Abstract:
... In recent years, new fungal diseases in kiwifruits have emerged worldwide. This study is the first report of a postharvest kiwifruit rot in South Korea caused by Diaporthe eres and related fungal pathogens. After single spore isolation of Diaporthe-like fungi isolated from rotten kiwifruits, isolates were identified based on the multi-locus phylogeny using the nuclear rDNA internal transcribed spa ...
fungicideresistance, etc ; Botrytis cinerea; adverse effects; biopesticides; blueberries; fruit quality; fruits; fungi; gray mold; natamycin; postharvest diseases; postharvest treatment; raw fruit; California; Show all 14 Subjects
Abstract:
... Botrytis cinerea is the cause of gray mold, a major postharvest disease of blueberries grown in California. Control of gray mold is largely dependent on the use of synthetic fungicides. However, multiple resistance to different classes of fungicides is commonly present in B. cinerea populations from blueberry in the region. Alternatives to conventional chemical fungicides are needed to control pos ...
fungicideresistance, etc ; Podosphaera aphanis; conidia; disease severity; forests; fungicide application; germination; leaves; meteorology; model validation; pathogens; powdery mildew; risk; sporulation; strawberries; weather; Show all 16 Subjects
Abstract:
... Strawberry powdery mildew (SPM), caused by Podosphaera aphanis, is gaining in importance as production of day-neutral strawberry and resistance to fungicide increase. This disease is difficult to predict because of the wide range of weather conditions favorable to its development. We explored dynamic simulation modelling. The model uses equations developed in-house, published algorithms describing ...
fungicideresistance, etc ; Stemphylium vesicarium; binomial distribution; data collection; disease incidence; disease progression; foliar diseases; geostatistics; inoculum; leaf blight; logit analysis; onions; soil; New York; Show all 14 Subjects
Abstract:
... Stemphylium leaf blight (SLB) caused by Stemphylium vesicarium is the dominant foliar disease affecting large-scale onion production in New York. The disease is managed by fungicides, but control failures are prevalent and are attributed to fungicide resistance. Little is known of the relative role of inoculum sources in initiation and spread of SLB epidemics. Plate testing of 28 commercially avai ...
Franklin J. Machado; Jhonatan P. Barro; Cláudia V. Godoy; Alfredo R. Dias; Carlos A. Forcelini; Carlos M. Utiamada; Edson R. Andrade; Fernando C. Juliatti; José Fernando J. Grigolli; Hercules D. Campos; Ivan Pedro Araujo; João Mauricio Trentini Roy; José Nunes; Luís Henrique C.P. da Silva; Marcelo G. Canteri; Marina Senger; Mônica A. Müller; Mônica C. Martins; Mônica Paula Debortoli; Silvânia H. Furlan; Tiago Madalosso; Valtemir J. Carlin; Wilson S. Venâncio; Emerson Del Ponte
... Soybean rust (SBR), caused by Phakopsora pachyrhizi, is controlled with sequential applications of commercial premixes containing two and, more recently, three site-specific fungicides. However, their efficacy has been reduced due to the development of fungicide resistance in the fungal population; hence the use of multi-site fungicides in tank mixing has been encouraged. In this work we used data ...
... Dollar spot, caused by fungal pathogens Clarireedia spp. (formerly Sclerotinia homoeocarpa), is the most common and widely distributed disease of turfgrass worldwide. It can drastically reduce the quality of turfgrass species and affect their aesthetic value and playability. Management of dollar spot typically includes a costly program of multiple application of fungicides within a growing season. ...
fungicideresistance, etc ; Parastagonospora nodorum; cultural control; cytochrome b; disease control; genes; high-throughput nucleotide sequencing; leaf spot; pathogens; quinones; site-directed mutagenesis; surveys; wheat; Virginia; Show all 14 Subjects
Abstract:
... Stagonospora nodorum blotch (SNB) caused by Parastagonospora nodorum is an important leaf spot disease in the mid-Atlantic United States. Disease management approaches include use of resistant varieties, cultural control, and foliar fungicides. Frequent use of foliar fungicides can select for fungicide resistance within pathogen populations. Recently, the first report of quinone outside inhibitor ...