A5089830283- Plant Pathogens and Fungal Diseases
- Wheat and Barley Genetics and Pathology
- Plant Pathogens and Resistance
- Mycotoxins in Agriculture and Food
- Genetics and Plant Breeding
- Plant Virus Research Studies
- Plant Disease Resistance and Genetics
- Horticultural and Viticultural Research
- Insect-Plant Interactions and Control
- Fungal Plant Pathogen Control
- Plant Pathogenic Bacteria Studies
- Berry genetics and cultivation research
- Yeasts and Rust Fungi Studies
- Plant-Microbe Interactions and Immunity
- Plant pathogens and resistance mechanisms
- Banana Cultivation and Research
- Phytoplasmas and Hemiptera pathogens
- Genetic Mapping and Diversity in Plants and Animals
- Turfgrass Adaptation and Management
- Optimal Experimental Design Methods
- Statistical Methods in Clinical Trials
- Plant Disease Management Techniques
- Animal Disease Management and Epidemiology
- Powdery Mildew Fungal Diseases
- Plant Surface Properties and Treatments
University College Dublin
2025
The Ohio State University
2014-2024
College of Wooster
2003-2023
Plant (United States)
2011-2021
Kansas State University
2004-2018
U.S. Horticultural Research Laboratory
2011-2017
United States Department of Agriculture
2011-2017
Agricultural Research Service
1986-2017
East Malling Research (United Kingdom)
2011-2017
Institut National Polytechnique de Toulouse
2017
Plant disease severity often is assessed using an ordinal rating scale rather than a continuous of measurement. Although such data usually should be analyzed with nonparametric methods, and not the typical parametric techniques (such as analysis variance), limitations in statistical methodology available had meant that experimental designs generally could more complicated one-way layout. Very recent advancements theoretical formulation hypotheses associated test statistics within framework,...
The effects of propiconazole, prothioconazole, tebuconazole, metconazole, and prothioconazole+tebuconazole (as a tank mix or formulated premix) on the control Fusarium head blight index (IND; field plot-level disease severity) deoxynivalenol (DON) in wheat were determined. A multivariate random-effects meta-analytical model was fitted to log-transformed treatment means from over 100 uniform fungicide studies across 11 years 14 states, mean log ratio (relative untreated check tebuconazole...
Beneficial microbes in the microbiome of plant roots improve health. Induced systemic resistance (ISR) emerged as an important mechanism by which selected growth–promoting bacteria and fungi rhizosphere prime whole body for ...Read More
ABSTRACT Logistic regression models for wheat Fusarium head blight were developed using information collected at 50 location-years, including four states, representing three different U.S. wheat-production regions. Non-parametric correlation analysis and stepwise logistic identified combinations of temperature, relative humidity, rainfall or durations specified weather conditions, 7 days prior to anthesis, 10 beginning crop as potential predictor variables. Prediction accuracy ranged from 62...
Abstract The stability and maturity of compost prepared from municipal solid waste (MSW) at a full‐scale composting plant was assessed through chemical, physical, biological assays. Respiration bioassays used to determine (O 2 CO respirometry) were sensitive process control problems the indicated increasing with time. Radish ( Raphanus sativus L.) ryegrass Lolium perenne growth revealed that immature samples inhibited growth. Growth in poring mix cured not amended fertilizer enhanced as...
Abstract. Plant viruses are an important constraint to crop production world‐wide. Rarely have plant virologists, vector entomologists and specialists worked together in search of sustainable management practices for viral diseases. Historically, modelling approaches been vector‐based dealing with empirical forecasting systems or simulation population dynamics. More recently, epidemiological models, such as those used human/animal epidemiology, introduced attempt characterize analyse the...
A light sphagnum peat mix inoculated with Trichoderma hamatum 382 consistently provided a significant (P = 0.05) degree of protection against bacterial spot tomato and its pathogen Xanthomonas euvesicatoria 110c compared the control mix, even though this biocontrol agent did not colonize aboveground plant parts. To gain insight into mechanism by which T. induced resistance in tomato, high-density oligonucleotide microarrays were used to determine effect on expression pattern 15,925 genes...
The association between Fusarium head blight (FHB) intensity and deoxynivalenol (DON) accumulation in harvested grain is not fully understood. A quantitative review of research findings was performed to determine if there a consistent significant relationship measures DON wheat grain. Results from published unpublished studies reporting correlations “index” (IND; field or plot-level disease severity), incidence (INC), diseased-head severity (DHS), Fusarium-damaged kernels (FDK) were analyzed...
Meta-analysis is the analysis of results multiple studies, which typically performed in order to synthesize evidence from many possible sources a formal probabilistic manner. In simple sense, outcome each study becomes single observation meta-analysis all available studies. The methodology was developed originally social sciences by Smith, Glass, Rosenthal, Hunter, and Schmidt, based on earlier pioneering contributions statistics Fisher, Pearson, Yates, Cochran, but this approach research...
Integration of host resistance and prothioconazole + tebuconazole fungicide application at anthesis to manage Fusarium head blight (FHB) deoxynivalenol (DON) in wheat was evaluated using data from over 40 trials 12 U.S. states. Means FHB index (index) DON up six class-fungicide management combinations per trial (susceptible treated [S_TR] untreated [S_UT]; moderately susceptible [MS_TR] [MS_UT]; resistant [MR_TR] [MR_UT]) were used multivariate meta-analyses, mean log response ratios across...
A continuous-time and deterministic model was used to characterize plant virus disease epidemics in relation transmission mechanism population dynamics of the insect vectors. The can be written as a set linked differential equations for healthy (virus-free), latently infected, infectious, removed (postinfectious) categories, virus-free, latent, infective insects, with parameters based on classes, vector dynamics, immigration/emigration rates, virus-plant interactions. rate change diseased...
Most plant viruses are vectored by arthropods, often Homopteran insects. Four general classes of plant-virus diseases have been recognized; they distinguished the transmission characteristics and nature interaction virus with vector. For nonpersistently transmitted viruses, is usually restricted to stylet insect. persistently ingested, passes through gut wall into haemolymph, then moves salivary glands where it can potentially be other plants. Persistently two subclasses termed circulaive if...
Rhizosphere bacteria were isolated from root tip segments of cucumber seedlings grown in a suppressive, slightly decomposed light-colored peat mix, conducive, more dark-colored and suppressive dark mix amended with composted hardwood bark. The identified by gas chromatographic fatty acid methyl ester analysis. total number taxa recovered single segment ranged 9 to 18. No taxon predominated on all harvested any the mixes. highest relative population density reached given was 45%. Hill's first...
Several factors affect the ability of Trichoderma spp. to provide systemic disease control. This paper focuses on role substrate in which plants are grown, resistance host disease, and introduced inoculum spread under commercial conditions. reports reveal that foliar control provided by is more effective grown compost-amended media compared with lower-in-microbial-carrying-capacity sphagnum peat media. In Rhododendron spp., affects Phytophthora dieback For example, T. hamatum 382 (T382)...
Six different individuals (raters) assessed the severity of Phomopsis leaf blight on strawberry leaflets in five experimental repetitions over 2 years by making a direct visual estimation percentage diseased area each leaflet or using Horsfall-Barratt (H-B) disease scale. Intra-rater and inter-rater reliability accuracy were determined, then relationship between visually estimated values actual was evaluated. Agreement assessment times same raters (i.e., intra-rater reliability), agreement...
Les approches utilisees pour creer des modeles mettant en relation le rendement recoltes et l'intensite maladies sont examinees. On demontre comment ces peuvent etre elargis ou modifies tenir compte de : i) la periode croissance durant laquelle surface feuilles est saine l'interception radiation par foliaire ; ii) dispersion agents pathogenes moyenne obtenue iii) l'instant les plantes infectees (surtout virus autres organismes causant infections systemiques) lie a dynamique temporelle...