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  • 1
    Online Resource
    Online Resource
    Soybean Yield Loss Estimates Due to Diseases in the United States and Ontario, Canada, from 2010 to 2014
    Scientific Societies ; 2017
    In:  Plant Health Progress Vol. 18, No. 1 ( 2017-01-01), p. 19-27
    Details
    In: Plant Health Progress, Scientific Societies, Vol. 18, No. 1 ( 2017-01-01), p. 19-27
    Abstract: Annual decreases in soybean (Glycine max L. Merrill) yield caused by diseases were estimated by surveying university-affiliated plant pathologists in 28 soybean-producing states in the United States and in Ontario, Canada, from 2010 through 2014. Estimated yield losses from each disease varied greatly by state or province and year. Over the duration of this survey, soybean cyst nematode (SCN) (Heterodera glycines Ichinohe) was estimated to have caused more than twice as much yield loss than any other disease. Seedling diseases (caused by various pathogens), charcoal rot (caused by Macrophomina phaseolina (Tassi) Goid), and sudden death syndrome (SDS) (caused by Fusarium virguliforme O’Donnell & T. Aoki) caused the next greatest estimated yield losses, in descending order. The estimated mean economic loss due to all soybean diseases, averaged across U.S. states and Ontario from 2010 to 2014, was $60.66 USD per acre. Results from this survey will provide scientists, breeders, governments, and educators with soybean yield-loss estimates to help inform and prioritize research, policy, and educational efforts in soybean pathology and disease management.
    Type of Medium: Online Resource
    ISSN: 1535-1025
    URL: Article
    DOI: 10.1094/PHP-RS-16-0066
    Language: English
    Publisher: Scientific Societies
    Publication Date: 2017
    detail.hit.zdb_id: 2115009-6
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  • 2
    Online Resource
    Online Resource
    Corn Yield Loss Estimates Due to Diseases in the United States and Ontario, Canada from 2012 to 2015
    Scientific Societies ; 2016
    In:  Plant Health Progress Vol. 17, No. 3 ( 2016-01), p. 211-222
    Details
    In: Plant Health Progress, Scientific Societies, Vol. 17, No. 3 ( 2016-01), p. 211-222
    Abstract: The goal of this survey was to determine the relative importance of the various corn diseases regionally and over time, equipping researchers, breeders, government, and Extension specialists with data to help prioritize educational opportunities, research investigations, and funding requests. Thus, the objective of this survey was to determine the annual estimated disease losses in field corn for each of the top corn-producing states in the United States and Ontario, Canada.
    Type of Medium: Online Resource
    ISSN: 1535-1025
    URL: Article
    DOI: 10.1094/PHP-RS-16-0030
    Language: English
    Publisher: Scientific Societies
    Publication Date: 2016
    detail.hit.zdb_id: 2115009-6
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  • 3
    Online Resource
    Online Resource
    Corn Yield Loss Estimates Due to Diseases in the United States and Ontario, Canada, from 2016 to 2019
    Scientific Societies ; 2020
    In:  Plant Health Progress Vol. 21, No. 4 ( 2020-01-01), p. 238-247
    Details
    In: Plant Health Progress, Scientific Societies, Vol. 21, No. 4 ( 2020-01-01), p. 238-247
    Abstract: Annual reductions in corn (Zea mays L.) yield caused by diseases were estimated by university Extension-affiliated plant pathologists in 26 corn-producing states in the United States and in Ontario, Canada, from 2016 through 2019. Estimated loss from each disease varied greatly by state or province and year. Gray leaf spot (caused by Cercospora zeae-maydis Tehon & E.Y. Daniels) caused the greatest estimated yield loss in parts of the northern United States and Ontario in all years except 2019, and Fusarium stalk rot (caused by Fusarium spp.) also greatly reduced yield. Tar spot (caused by Phyllachora maydis Maubl.), a relatively new disease in the United States, was estimated to cause substantial yield loss in 2018 and 2019 in several northern states. Gray leaf spot and southern rust (caused by Puccinia polysora Underw.) caused the most estimated yield losses in the southern United States. Unfavorable wet and delayed harvest conditions in 2018 resulted in an estimated 2.5 billion bushels (63.5 million metric tons) of grain contaminated with mycotoxins. The estimated mean economic loss due to reduced yield caused by corn diseases in the United States and Ontario from 2016 to 2019 was US$55.90 per acre (US$138.13 per hectare). Results from this survey provide scientists, corn breeders, government agencies, and educators with data to help inform and prioritize research, policy, and educational efforts in corn pathology and disease management.
    Type of Medium: Online Resource
    ISSN: 1535-1025
    URL: Article
    DOI: 10.1094/PHP-05-20-0038-RS
    Language: English
    Publisher: Scientific Societies
    Publication Date: 2020
    detail.hit.zdb_id: 2115009-6
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  • 4
    Online Resource
    Online Resource
    Soybean Yield Loss Estimates Due to Diseases in the United States and Ontario, Canada, from 2015 to 2019
    Scientific Societies ; 2021
    In:  Plant Health Progress Vol. 22, No. 4 ( 2021-01-01), p. 483-495
    Details
    In: Plant Health Progress, Scientific Societies, Vol. 22, No. 4 ( 2021-01-01), p. 483-495
    Abstract: Soybean (Glycine max [L.] Merrill) yield losses as a result of plant diseases were estimated by university and government plant pathologists in 29 soybean producing states in the United States and in Ontario, Canada, from 2015 through 2019. In general, the estimated losses that resulted from each of 28 plant diseases or pathogens varied by state or province as well as year. Soybean cyst nematode (SCN) (Heterodera glycines Ichinohe) caused more than twice as much loss as any other disease during the survey period. Seedling diseases (caused by various pathogens), Sclerotinia stem rot (white mold) (caused by Sclerotinia sclerotiorum [Lib.] de Bary), and sudden death syndrome (caused by Fusarium virguliforme O’Donnell & T. Aoki) caused the next greatest yield losses, in descending order. Following SCN, the most damaging diseases in the northern United States and Ontario differed from those in the southern United States. The estimated mean economic loss from all soybean diseases, averaged across the United States and Ontario, Canada was US$45 per acre (US$111 per hectare). The outcome from the current survey will provide pertinent information regarding the important soybean diseases and their overall severity in the soybean crop and help guide future research and Extension efforts on managing soybean diseases.
    Type of Medium: Online Resource
    ISSN: 1535-1025
    URL: Article
    DOI: 10.1094/PHP-01-21-0013-RS
    Language: English
    Publisher: Scientific Societies
    Publication Date: 2021
    detail.hit.zdb_id: 2115009-6
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  • 5
    Online Resource
    Online Resource
    In vitro attachment of phylloplane yeasts to Botrytis cinerea , Rhizoctonia solani , and Sclerotinia homoeocarpa
    Canadian Science Publishing ; 2004
    In:  Canadian Journal of Microbiology Vol. 50, No. 12 ( 2004-12-01), p. 1041-1048
    Details
    In: Canadian Journal of Microbiology, Canadian Science Publishing, Vol. 50, No. 12 ( 2004-12-01), p. 1041-1048
    Abstract: The ability of yeasts to attach to hyphae or conidia of phytopathogenic fungi has been speculated to contribute to biocontrol activity on plant surfaces. Attachment of phylloplane yeasts to Botrytis cinerea, Rhizoctonia solani, and Sclerotinia homoeocarpa was determined using in vitro attachment assays. Yeasts were incubated for 2 d on potato dextrose agar (PDA) prior to experimentation. A total of 292 yeasts cultured on PDA were screened for their ability to attach to conidia of B. cinerea; 260 isolates (89.1%) attached to conidia forming large aggregates of cells, and 22 isolates (7.5%) weakly attached to conidia with 1 or 2 yeast cells attached to a few conidia. Ten yeasts (3.4%), including 8 isolates of Cryptococcus laurentii, 1 isolate of Cryptococcus flavescens, and an unidentified species of Cryptococcus, failed to attach to conidia. All non-attaching yeasts produced copious extracellular polysaccharide (EPS) on PDA. Seventeen yeast isolates did not attach to hyphal fragments of B. cinerea, R. solani, and S. homoeocarpa after a 1 h incubation, but attachment was observed after 24 h. Culture medium, but not culture age, significantly affected the attachment of yeast cells to conidia of B. cinerea. The 10 yeast isolates that did not attach to conidia when grown on agar did attach to conidia (20%–57% of conidia with attached yeast cells) when cultured in liquid medium. Attachment of the biocontrol yeast Rhodotorula glutinis PM4 to conidia of B. cinerea was significantly greater at 1 × 10 7 yeast cells·mL –1 than at lower concentrations of yeast cells. The ability of yeast cells to attach to fungal conidia or hyphae appears to be a common phenotype among phylloplane yeasts.Key words: adhesion, biological control, Cryptococcus laurentii, Rhodotorula glutinis.
    Type of Medium: Online Resource
    ISSN: 0008-4166 , 1480-3275
    URL: Article
    DOI: 10.1139/w04-100
    RVK:
    WA 15000
    Language: English
    Publisher: Canadian Science Publishing
    Publication Date: 2004
    detail.hit.zdb_id: 280534-0
    detail.hit.zdb_id: 1481972-7
    SSG: 12
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    Online Resource
  • 6
    Online Resource
    Online Resource
    Effect of foliar disease on the epiphytic yeast communities of creeping bentgrass and tall fescue
    Canadian Science Publishing ; 2004
    In:  Canadian Journal of Microbiology Vol. 50, No. 10 ( 2004-10-01), p. 853-860
    Details
    In: Canadian Journal of Microbiology, Canadian Science Publishing, Vol. 50, No. 10 ( 2004-10-01), p. 853-860
    Abstract: The effect of mechanical wounding or foliar diseases caused by Sclerotinia homoeocarpa or Rhizoctonia solani on the epiphytic yeast communities on creeping bentgrass and tall fescue were determined by leaf washing and dilution plating. Total yeast communities on healthy bentgrass and tall fescue leaves ranged from 7.9 × 10 3 to 1.4 × 10 5 CFU·cm –2 and from 2.4 × 10 3 to 1.6 × 10 4 CFU·cm –2 , respectively. Mechanically wounded leaves (1 of 2 trials) and leaves with disease lesions (11 of 12 trials) supported significantly larger communities of phylloplane yeasts. Total yeast communities on S. homoeocarpa infected or R. solani infected bentgrass leaves were 3.6–10.2 times and 6.2–6.4 times larger, respectively, than the communities on healthy leaves. In general, healthy and diseased bentgrass leaves supported larger yeast communities than healthy or diseased tall fescue leaves. We categorized the majority of yeasts as white-pigmented species, including Cryptococcus laurentii, Cryptococcus flavus, Pseudozyma antarctica, Pseudozyma aphidis, and Pseudozyma parantarctica. The percentage of pink yeasts in the total yeast community ranged from 2.6% to 9.9% on healthy leaves and increased to 32.0%–44.7% on S. homoeocarpa infected leaves. Pink-pigmented yeasts included Rhodotorula glutinis, Rhodotorula mucilaginosa, Sakaguchia dacryoidea, and Sporidiobolus pararoseus. Foliar disease significantly affected community size and composition of epiphytic yeasts on bentgrass and tall fescue.Key words: dollar spot, phylloplane, Rhizoctonia blight.
    Type of Medium: Online Resource
    ISSN: 0008-4166 , 1480-3275
    URL: Article
    DOI: 10.1139/w04-073
    RVK:
    WA 15000
    Language: English
    Publisher: Canadian Science Publishing
    Publication Date: 2004
    detail.hit.zdb_id: 280534-0
    detail.hit.zdb_id: 1481972-7
    SSG: 12
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  • 7
    Online Resource
    Online Resource
    Glyphosate-resistant Italian ryegrass ( Lolium perenne ssp. multiflorum ) control with preemergence and postemergence herbicide programs
    Cambridge University Press (CUP) ; 2022
    In:  Weed Technology Vol. 36, No. 1 ( 2022-02), p. 145-151
    Details
    In: Weed Technology, Cambridge University Press (CUP), Vol. 36, No. 1 ( 2022-02), p. 145-151
    Abstract: A field study was conducted twice in Elizabeth, MS, at on-farm sites in 2010–11 and 2011–12, and twice in 2012–13 at Mississippi State University’s Delta Research and Extension Center in Stoneville, MS, to evaluate glyphosate-resistant (GR) Italian ryegrass control and crop response to fall treatments followed by postemergence herbicide treatments in winter and/or spring. Italian ryegrass was controlled ≥92% and 61% following S -metolachlor and tillage 77 d after fall treatments (DA-FT), respectively. S -metolachlor fall treatment provided 33% greater control than clethodim winter treatment at 21 d after winter treatments (DA-WT). Tillage fall treatment followed by (fb) clethodim winter treatment fb paraquat spring treatment provided similar control (93%) to treatments containing S -metolachlor fall treatment fb a winter or spring herbicide treatment (≥93%) 24 d after spring treatments (DA-ST). Greatest soybean and corn density and yield were also observed following programs containing S -metolachlor fall treatment. Sequential postemergence herbicide treatments were not required to increase corn and soybean density and yield when S -metolachlor was used as a fall treatment. Growers have the best opportunity to maximize GR Italian ryegrass control when S -metolachlor fb a winter or spring herbicide treatment is used.
    Type of Medium: Online Resource
    ISSN: 0890-037X , 1550-2740
    URL: Article
    DOI: 10.1017/wet.2021.108
    Language: English
    Publisher: Cambridge University Press (CUP)
    Publication Date: 2022
    detail.hit.zdb_id: 2119100-1
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  • 8
    Online Resource
    Online Resource
    Meta-Analysis of the Field Efficacy of Seed- and Soil-Applied Nematicides on  Meloidogyne incognita and Rotylenchulus reniformis Across the U.S. Cotton Belt
    Scientific Societies ; 2022
    In:  Plant Disease Vol. 106, No. 8 ( 2022-08-01), p. 2228-2238
    Details
    In: Plant Disease, Scientific Societies, Vol. 106, No. 8 ( 2022-08-01), p. 2228-2238
    Abstract: Meta-analysis was used to compare yield protection and nematode suppression provided by two seed-applied and two soil-applied nematicides against Meloidogyne incognita and Rotylenchulus reniformis on cotton across 3 years and several trial locations in the U.S. Cotton Belt. Nematicides consisted of thiodicarb- and fluopyram-treated seed, aldicarb and fluopyram applied in furrow, and combinations of the seed treatments and soil-applied fluopyram. The nematicides had no effect on nematode reproduction or root infection but had a significant impact on seed cotton yield response ([Formula: see text]), with an average increase of 176 and 197 kg/ha relative to the nontreated control in M. incognita and R. reniformis infested fields, respectively. However, because of significant variation in yield protection and nematode suppression by nematicides, five or six moderator variables (cultivar resistance [M. incognita only] , nematode infestation level, nematicide treatment, application method, trial location, and growing season) were used depending on nematode species. In M. incognita-infested fields, greater yield protection was observed with nematicides applied in furrow and with seed-applied + in-furrow than with solo seed-applied nematicide applications. Most notable of these in-furrow nematicides were aldicarb and fluopyram ( 〉 131 g/ha) with or without a seed-applied nematicide compared with thiodicarb. In R. reniformis-infested fields, moderator variables provided no further explanation of the variation in yield response produced by nematicides. Furthermore, moderator variables provided little explanation of the variation in nematode suppression by nematicides in M. incognita- and R. reniformis-infested fields. The limited explanation by the moderator variables on the field efficacy of nematicides in M. incognita- and R. reniformis-infested fields demonstrates the difficulty of managing these pathogens with nonfumigant nematicides across the U.S. Cotton Belt.
    Type of Medium: Online Resource
    ISSN: 0191-2917 , 1943-7692
    URL: Article
    DOI: 10.1094/PDIS-07-21-1529-RE
    Language: English
    Publisher: Scientific Societies
    Publication Date: 2022
    detail.hit.zdb_id: 2042679-3
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  • 9
    Online Resource
    Online Resource
    Refined cut-off for TP53 immunohistochemistry improves prediction of TP53 mutation status in ovarian mucinous tumors: implications for outcome analyses
    Elsevier BV ; 2021
    In:  Modern Pathology Vol. 34, No. 1 ( 2021-01), p. 194-206
    Details
    In: Modern Pathology, Elsevier BV, Vol. 34, No. 1 ( 2021-01), p. 194-206
    Type of Medium: Online Resource
    ISSN: 0893-3952
    URL: Article
    DOI: 10.1038/s41379-020-0618-9
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2021
    detail.hit.zdb_id: 2041318-X
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  • 10
    Online Resource
    Online Resource
    Variable adhesion and diurnal population patterns of epiphytic yeasts on creeping bentgrass
    Canadian Science Publishing ; 2006
    In:  Canadian Journal of Microbiology Vol. 52, No. 5 ( 2006-05-01), p. 404-410
    Details
    In: Canadian Journal of Microbiology, Canadian Science Publishing, Vol. 52, No. 5 ( 2006-05-01), p. 404-410
    Abstract: Irrigation and an in vitro agitation assay were used to determine the percentage of the epiphytic yeast community (Cryptococcus, Pseudozyma, Rhodotorula, and Sporobolomyces) adhering to the phylloplane of creeping bentgrass (Agrostis palustris (Huds.) Pers.). Colony-forming units (cfu) of total epiphytic yeast populations (adherent and nonadherent cells) and of adherent populations (cells not removed by agitation) were determined by leaf washing and dilution plating. In an in vitro assay, 40.0% and 57.1% of the yeast adhered to the leaves, whereas, in initial field trials the percentage of adherent yeasts ranged from 40.0% to 71.9% of the total population. Adherent yeast cfu on leaves in the morning were significantly lower on bentgrass (8.0 × 10 3 to 3.1 × 10 4 cfu·cm –2 ) compared with total yeast cfu (1.4 × 10 4 to 4.7 × 10 4 cfu·cm –2 ) on the nonirrigated control. No differences in yeast populations were observed between irrigated and nonirrigated plots 2 h after the 0900 treatments. Yeast populations followed a diurnal pattern, with larger cfu recovered from bentgrass leaves in the morning and significantly lower populations recovered in the afternoon. At 1400 the adherent yeast were 83.1%–100% of the total yeast population recovered from the leaves. The relative adhesiveness of the epiphytic yeast community on bentgrass leaves is dynamic with nonadherent cells making up a larger percentage of the population in the mornings than the afternoons.Key words: adherence, Cryptococcus, leaf surface, Rhodotorula, turfgrass.
    Type of Medium: Online Resource
    ISSN: 0008-4166 , 1480-3275
    URL: Article
    DOI: 10.1139/w05-145
    RVK:
    WA 15000
    Language: English
    Publisher: Canadian Science Publishing
    Publication Date: 2006
    detail.hit.zdb_id: 280534-0
    detail.hit.zdb_id: 1481972-7
    SSG: 12
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