A5014482115- Plant Pathogens and Fungal Diseases
- Plant Disease Resistance and Genetics
- Plant Disease Management Techniques
- Soybean genetics and cultivation
- Nematode management and characterization studies
- Plant Pathogens and Resistance
- Plant Virus Research Studies
- Banana Cultivation and Research
- Weed Control and Herbicide Applications
- Plant pathogens and resistance mechanisms
- Plant and Fungal Interactions Research
- Yeasts and Rust Fungi Studies
- Fungal Plant Pathogen Control
- Berry genetics and cultivation research
- Legume Nitrogen Fixing Symbiosis
- Peanut Plant Research Studies
- Agriculture, Plant Science, Crop Management
- Fluid Dynamics and Heat Transfer
- Mycotoxins in Agriculture and Food
- Entomopathogenic Microorganisms in Pest Control
- Plant Physiology and Cultivation Studies
- Electrohydrodynamics and Fluid Dynamics
- Potato Plant Research
- Pesticide and Herbicide Environmental Studies
- Insect-Plant Interactions and Control
University of Arkansas System
2015-2025
University of Arkansas at Fayetteville
2013-2023
University of Arkansas at Monticello
2015-2021
Delta Air Lines (United States)
2017
Auburn University
2017
Louisiana State University Agricultural Center
2017
Mississippi State University
2017
Mississippi Delta Community College
2017
Texas A&M University
2017
University of Georgia
2015
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...
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...
Abstract Large patch ( Rhizoctonia solani Kühn: anastomosis group [AG] 2‐2) is a destructive disease in warm‐season turfgrasses worldwide, particularly zoysiagrass Zoysia spp.). Developing as an orange or tan color, the starts small, round patches that can eventually progress to several meters diameter. results reduced turfgrass health, loss of aesthetics, and playability concerns. There have been many studies conducted on pathology, development, management large turfgrass, yet there are...
Taproot decline (TRD) is a disease of soybean that has been reported recently from the southern United States (U.S.). Symptoms TRD include foliar interveinal chlorosis followed by necrosis. Darkened, charcoal-colored areas thin stromatic tissue are evident on taproot and lateral roots along with necrosis within root white mycelia pith. Upright stromata typical Xylaria can be observed crop debris emerging infested in fields where present, but these have not determined to contain fertile...
Cercospora leaf blight (CLB) of soybean, caused by
Remotely piloted aerial application systems (RPAAS) are exponentially increasing globally for pesticide applications. Evaluations of spray coverage, deposits, and droplet size, when implementing various parameters, needed to optimize these A RPAAS at 46.8 L ha -1 provided similar or greater coverage deposits ground equipment 93.5 across nozzle types evaluated excluding the XR. The 18.7 had reduced (<9% total coverage) (<350 cm -2 ) regardless type compared other two setups. top...
Over the past decade, a soybean root issue of unknown etiology has been observed across widespread geography in southern United States. Recently, pathologists began referring to problem as taproot decline soybean, based on appearance symptoms. Taproot cause foliar symptoms vegetative and reproductive plants ranging maturity from V6 R6. Symptom expression can appear similar other notable root-associated diseases except that exhibits progression symptom subtle severe interveinal chlorosis...
Abstract Rapid crop canopy formation is important to reduce weed emergence and selection for herbicide resistance. Field experiments were conducted in 2017 2018 Fayetteville, AR, evaluate the impacts of PRE applications flumioxazin on soybean injury, density, formation, incidence soil-borne pathogens. Flumioxazin was applied at 0, 70, 105 g ai ha −1 predetermined flumioxazin-tolerant -sensitive varieties. 70 injured tolerant sensitive varieties from 0% 4% 14% 15%, respectively. When averaged...
The best method to quantitatively determine populations of Rhizoctonia in soil from soybean fields undergoing rice and rotations was determined for use a large-scale spatial study be done over multiple years. methods evaluated were the toothpick-baiting method, multiple-pellet sampler, pour-plate using elutriated organic matter or surface residue. calibrated sampler assay an approximate volume 15.43 cm 3 . radius isolation with technique approximately 1 cm. In 2009 2010, toothpick most...
Diseases of soybean (Glycine max L.) caused by species Diaporthe have resulted in estimated yield losses totaling $248.2 million the U.S. over past 10 years. To effectively manage Diaporthe, it is important to use an integrated approach. In this study, we evaluated vitro sensitivity isolates pathogens aspalathi, D. caulivora, and longicolla from 18 states difenoconazole (a demethylation inhibitor fungicide) fluopyram succinate dehydrogenase fungicide). The fungicides were incorporated into...
In early September 2012, symptoms similar to aerial blight were observed on runner peanut (cv. Georgia 09B) in a commercial field Randolph County, Arkansas (3). Leaves within the canopy closest soil had water-soaked, gray green lesions or tan brown lesions. Localized areas of matted leaves with mycelium occurred stems and hyphae extended along newly affected leaves. Dark spherical sclerotia (1.5 4 mm diam.) produced surface symptomatic tissue Aerial two fields (~4 6 ha) that furrow...
Important stem and grain diseases of soybean ( Glycine max [L.] Merr.) caused by Diaporthe aspalathi, D. caulivora, longicolla reduce yield in the United States. Sources resistance to these pathogens have previously been reported; however, there is limited information regarding their when exposed geographically distinct isolates same species. In this study, four accessions from USDA Soybean Germplasm Collection with reported or were evaluated using representative within each species For...
The draft genome of Xylaria sp. isolate MSU_SB201401, causal agent taproot decline soybean in the southern U.S., is presented here. assembly was 56.7 Mb size with an L50 246. A total 10,880 putative protein-encoding genes were predicted, including 647 encoding carbohydrate-active enzymes and 1053 secreted proteins. This first a plant-pathogenic associated soybean. MSU_SB201401 will provide important resource for future experiments to determine molecular basis pathogenesis.
Abstract Soybean injury following an application of metribuzin soon after planting can occur under cool, wet conditions, especially for varieties that lack a high level tolerance to the herbicide. Field experiments were conducted in 2017 and 2018 Fayetteville, AR, evaluate impacts at 0, 280, 560, 840, 1,120 g ai ha −1 on soybean growth incidence soil‐borne fungi. Three classes (sensitive, moderately tolerant, tolerant) evaluated based previous screen. In both years, visible was impacted by...
Arkansas soybean producers spend significant amounts of money on annual input costs. 2015 UA Division Agriculture crop enterprise budgets estimated irrigated average operating expenses at $328.75 per acre across Roundup Ready, Liberty Link, and conventional systems. Commodity market price declines, such as have been seen in late 2015, increase the importance cost evaluations to maintain profitable returns. This study compares “automatic applications” made phenology versus “treating needed”...
In soybean‐producing areas of Arkansas, root damage caused by southern knot nematode and defoliation frogeye leaf spot are two the most economically important soybean diseases that occur, it is not uncommon for both to be found in same field. This study sought determine how affected each other overall yield using spatial data collection analysis. Earn 0.5 CEUs Integrated Pest Management reading this article taking quiz at www.certifiedcropadviser.org/certifications/self‐study/810 .