A5048633657- Entomopathogenic Microorganisms in Pest Control
- Soybean genetics and cultivation
- Plant Disease Management Techniques
- Wheat and Barley Genetics and Pathology
- Insect-Plant Interactions and Control
- Plant Pathogens and Fungal Diseases
- Insect Resistance and Genetics
- Agricultural pest management studies
- Plant Disease Resistance and Genetics
- Plant Virus Research Studies
- Agriculture and Farm Safety
- Nematode management and characterization studies
- Crop Yield and Soil Fertility
- Dermatological diseases and infestations
- Genetics and Plant Breeding
- Animal Disease Management and Epidemiology
- Insect Pest Control Strategies
- Infectious Diseases and Mycology
- Plant Physiology and Cultivation Studies
- Yeasts and Rust Fungi Studies
- Forest Insect Ecology and Management
- Vector-Borne Animal Diseases
- Plant Pathogens and Resistance
- Parasitic Diseases Research and Treatment
- Cyclone Separators and Fluid Dynamics
Iowa State University
2012-2025
Annual decreases in soybean (Glycine max L. Merrill) yield caused by diseases were estimated surveying university-affiliated plant pathologists 28 soybean-producing states the United States and Ontario, Canada, from 2010 through 2014. Estimated losses each disease varied greatly state or province year. Over duration of this survey, cyst nematode (SCN) (Heterodera glycines Ichinohe) was to have more than twice as much loss any other disease. Seedling (caused various pathogens), charcoal rot...
Annual decreases in corn yield caused by diseases were estimated surveying members of the Corn Disease Working Group 22 corn-producing states United States and Ontario, Canada, from 2012 through 2015. Estimated loss each disease varied greatly state year. In general, foliar such as northern leaf blight, gray spot, Goss's wilt commonly largest Ontario during non-drought years. Fusarium stalk rot plant-parasitic nematodes most southern-most States. The mean economic due to 2015 was $76.51 USD...
Annual reductions in corn (Zea mays L.) yield caused by diseases were estimated university Extension-affiliated plant pathologists 26 corn-producing states the United States and Ontario, Canada, from 2016 through 2019. Estimated loss each disease varied greatly state or province year. Gray leaf spot (caused Cercospora zeae-maydis Tehon & E.Y. Daniels) greatest parts of northern Ontario all years except 2019, Fusarium stalk rot spp.) also reduced yield. Tar Phyllachora maydis Maubl.), a...
Soybean (Glycine max [L.] Merrill) yield losses as a result of plant diseases were estimated by university and government pathologists in 29 soybean producing states the United States Ontario, Canada, from 2015 through 2019. In general, that resulted each 28 or pathogens varied state province well year. cyst nematode (SCN) (Heterodera glycines Ichinohe) caused more than twice much loss any other disease during survey period. Seedling (caused various pathogens), Sclerotinia stem rot (white...
Wheat (Triticum aestivum L.) yield and economic losses caused by pathogens were estimated annually plant pathologists from 29 U.S. states Ontario, Canada 2018 through 2021. During this four-year period, an reduction of 560 million bushels with loss value $2.9 billion USD. Annual ranged 111 in to 188 2019. Based on the number acres planted, average per acre was $18.10 USD across all years states/province recording estimates. Fusarium head blight (caused multiple species Fusarium) responsible...
Fungicide efficacy guides, updated annually through the Crop Protection Network, inform fungicide selection for foliar and seedling diseases of corn (Zea mays) soybean (Glycine max). These guides rank fungicides based on multi-state field trials across U.S. Ontario, Canada. Trials were analyzed to validate these rankings by assessing under varying disease severities. Under high severity (≥5%), with best ratings significantly reduced gray leaf spot (GLS; caused Cercospora zeae-maydis)...
In August 2023, soybean (Glycine max L.) leaf anthracnose (SLA) symptoms, predominantly at margins, were observed in variety trials and commercial fields Iowa (<1% incidence field on Newton Story counties). Acervuli covered with conidial masses consistently observed, primarily edges. Symptomatic leaves collected, surfaced-disinfested (70% ethanol for 30 s, followed by 0.75% NaClO 1 min, rinsed twice sterile water), placed a humid chamber 20°C diurnal cycle until sporulation. Conidial...
The Iowa State University Plant and Insect Diagnostic Clinic analyzes soil root samples for plant-parasitic nematodes. results of associated with corn that were submitted from 2000 through 2010 summarized. One or more genera nematodes found in 92% the samples. Spiral nematode root-lesion most commonly found. Other recovered dagger, lance, needle, pin, ring, stunt Nematodes at damaging population densities spiral An average 15 per year to 2004. Sample numbers increased nearly threefold since...
Sclerotinia stem rot (SSR or white mold), caused by sclerotiorum (Lib.) DeBary, is an economically important fungal disease of soybean. SSR routinely causes yield loss in the upper Corn Belt United States due to wet, humid conditions that coincide with moderate temperatures. This study investigated novel cultural practice mechanical cutting, mowing, as management across multiple seeding rates. Mowing soybean during early vegetative growth alters plant architecture and habit. results a...
Spun polyester row covers, alone and in combination with insecticides, were evaluated for management of bacterial wilt muskmelon at three locations Iowa during 2003 2004. Following removal covers bloom, more spotted cucumber beetles counted the plots than non-covered plots. Row delayed onset symptoms reduced incidence. In both years, increased number yield marketable melons. There no significant differences beetle counts or melon among insecticide treatments 2003. 2004, however, each had...