Thermal treatment using microwave irradiation for the phytosanitation of Xylella fastidiosa in pecan graftwood

Pecan bacterial leaf scorch caused by Xylella fastidiosa is an emerging disease for the U.S. and international pecan industries and can be transmitted from scion to rootstock via grafting. With the expanse of global transportation and trade networks, phytosanitation is critical for reducing the spread of economically significant pathogens, such as X. fastidiosa. We developed […]

The first genomic resources for Phymatotrichopsis omnivora, a soil-borne pezizomycete pathogen with a broad host range

Phymatotrichopsis omnivora is a destructive plant pathogen causing root rot disease of alfalfa, cotton, pecan, grape, and many other important dicotyledonous species. A member of the family Rhizinaceae, in the class Pezizomycetes, P. omnivora is a soilborne ascomycete fungus that is difficult to maintain in culture, currently genetically intractable, and for which there are no […]

Ecology of Diaporthe eres, the causal agent of hazelnut defects

Diaporthe eres has been recently reported as the causal agent of hazelnut defects, with characteristic brown spots on the kernels surface and internal fruit discoloration. Knowledge regarding the ecology of this fungus is poor but, is critical to support a rationale and effective hazelnut crop protection strategy. Therefore, a study was performed to describe and […]

First Report of Macrophomina phaseolina Causing Charcoal Rot of Peanut (Arachis hypogaea L.) in Mexico

Peanut (Arachis hypogaea L.) is the third most important oilseed crop in the world. The cultivated area in Mexico is currently 52,046 ha with a production of 91,109 ton in 2018 (FAO, 2020). Puebla state ranks third in the national production with 9,313 ton (SIAP, 2020). In September 2019, typical symptoms of charcoal rot (Macrophomina […]

Peanut disease epidemiology under dynamic microclimate conditions and management practices in North Florida

Diverse field characteristics, weather patterns, and management practices can result in variable microclimates. The objective was to relate in-field microclimate conditions with peanut diseases and yield and determine the effect of irrigation and fungicides within these environments. Irrigation did not have a major impact on disease and yield. Stem rot (Athelia rolfsii) and early (Passalora […]

First Report of Stem Canker of Almond Trees Caused by Fusarium solani in Greece

Almond (Prunus dulcis) is an important crop for Greece grown on 15.130 ha in 2019. In September 2019, a severe stem canker disease was observed in 6-year-old trees of cv Marta grafted on the rootstock 'F675C14', in a new almond grove of cvs Marta, Soleta, Antonela, Belona and Laurete, in Vlachiana, Heraklion, Crete, Greece. Only […]

Field Biology of Scolothrips sexmaculatus (Thysanoptera: Thripidae) as a Predator of Tetranychus pacificus (Acari: Tetranychidae) in California Almonds

Biological control of tetranychid spider mites in California almonds has predominantly been associated with predatory mites in the family Phytoseiidae. However, changes in production practices, including shifts to more sustainable chemical control programs, have resulted in a trophic shift leading to the predominance of six-spotted thrips, Scolothrips sexmaculatus Pergande, as the primary mite predator. Over […]

First report of Alternaria alternata causing fruit rot on Fig (Ficus carica) in Pakistan

Fig (Ficus carica L.) is among the earliest and widely cultivated fruit trees in the world due to its easy adaptation to diverse climates (Solomons et al. 2006). In July 2020, a rot disease was observed on multiple orchards located in Faisalabad- a region of Punjab Province. The symptoms appeared as light brown, circular to […]

Lethal and Sublethal Effects of Two Commercial Insecticides on Egg Parasitoids (Hymenoptera: Scelionidae) of Green Stink Bugs (Hem: Pentatomidae)

Pistacia vera L. is one of the most important horticultural crops in Iran. The stink bugs Acrosternum arabicum and Brachynema germari are two of the key pests that cause significant direct and indirect damage on Pistacia vera. Egg parasitoids have been considered as potential biological control agents of pistachio green stink bugs. Among them, Trissolcus […]

First report of Erysiphe corylacearum, agent of powdery mildew, on hazelnut ( Corylus avellana) in Romania

Romania has an area dedicated to hazelnut (Corylus avellana L.), covering 890 hectares as of 2019. During October 2020, powdery mildew symptoms were observed on the upper side of leaves of hazelnut 'Tonda di Giffoni' in two commercial orchards in Dudeștii Vechi, Romania (Fig. 1). The disease was present on 70% of the trees in […]