Sour rot of sweetpotato, caused by #Geotrichum candidum (Link, 1809), is an emerging postharvest disease that reduces root quality and storage life. K. Avila, Y. Rosado-Rivera, and L. M. Quesada-Ocampo provides the first comprehensive reference for this disease: https://bit.ly/4smpRDo

Plant Disease Management Report: “Evaluation of Fungicides to Control Pythium Root Rot of Geranium, 2025,” by C. S. Krasnow: https://doi.org/10.1094/PHP-11-25-0253-PDMR

Ken Obasa and Dennis Coker identified a disease caused by #Pantoea agglomerans affecting corn and sorghum that can closely resemble iron deficiency, potentially leading farmers to apply costly nutrient treatments that do not address the underlying problem: https://doi.org/10.1094/PHP-07-25-0184-RS

Plant Disease Management Report: “Evaluation of Organic Fungicides for the Management of Anthracnose in Cucumber in Georgia, 2024,” by Navjot Kaur et al.: https://doi.org/10.1094/PHP-07-25-0181-PDMR

Editor’s Pick: “Reaction of Sclerotinia Stem Rot-Resistant Brassica napus Plant Introduction Genotypes to Inoculations with Multiple Sclerotinia sclerotiorum Isolates,” by Bita Babakhani et al. Learn more: https://doi.org/10.1094/PHP-03-25-0085-RS

Plant Disease Management Report: “Efficacy of Host Genetic Resistance and Fungicide for Managing Cercospora janseana in Rice at Colt, AR, 2024,” by J. S. Pereira et al.: https://doi.org/10.1094/PHP-08-25-0215-PDMR

To reduce reliance on the use of synthetic fungicides for managing silver scurf on potato micro- and minitubers, Natalia Moroz et al. evaluated a range of biologically derived compounds for their in vitro potential to suppress #Helminthosporium solani: https://doi.org/10.1094/PHP-07-25-0195-RS

Plant Disease Management Report: “Evaluation of Transplant Drench Fungicides for the Management of Clubroot in Spring-Planted Broccoli, 2024,” by Douglas S. Higgins and Calyn M. Adams: https://doi.org/10.1094/PHP-06-25-0169-PDMR

Editor’s Pick: Oak wilt is a deadly vascular disease impacting numerous Fagaceae hosts, including important forest, urban landscape, etc. Karandeep Chahal et al. present a Diagnostic Guide detailing protocols for isolation and detection: https://doi.org/10.1094/PHP-05-25-0154-DG

Plant Disease Management Report: “Evaluation of Organic Fungicides for Control of Hemp Powdery Mildew, Geneva, NY, 2025,” by Jocelyn A. Schwartz et al.: https://doi.org/10.1094/PHP-09-25-0218-PDMR #hemp

William Rutter et al. present a NPDRS Recovery Plan by providing a detailed overview of what is currently known about the biology, distribution, and management of #Meloidogyne enterolobii. Learn more—open access in Plant Health Progress: https://doi.org/10.1094/PHP-04-25-0119-RP

Plant Disease Management Report: “Assessment of NPGS Sugar Beet Germplasm for Resistance to Rhizoctonia Root and Crown Rot in Fort Collins, CO, 2024,” by Olivia E. Todd et al.: https://doi.org/10.1094/PHP-09-25-0233-PDMR

Editor’s Pick: Brooke Dietsch et al. conducted a survey in 2023 and 2024 of canker-associated pathogens in declining cold-hardy interspecific hybrid grapevines across Iowa vineyards: https://doi.org/10.1094/PHP-07-25-0194-S

Cherry virus A (CVA) is widespread in sweet cherry across Europe, North and South America, Asia, and Oceania. Snezhana Milusheva et al. present the first known report of CVA in Bulgaria and the first evidence of its vertical transmission in sweet cherry: https://doi.org/10.1094/PHP-03-25-0092-S

Bacterial leaf streak (BLS), caused by #Xanthomonas translucens pv. undulosa, is a top foliar diseases of hard red spring wheat (HRSW) in the northern Great Plains. Gabriel Dusek et al. evaluated the efficacy of 21 products to manage BLS in HRSW: https://doi.org/10.1094/PHP-05-25-0136-RS

A South Carolina homeowner submitted samples for diagnosis of young paperbush shrubs that were unthrifty and declining. Steven N. Jeffers et al. present the first report of #Phytophthora palmivora causing root and crown rot on #Edgeworthia chrysantha: https://doi.org/10.1094/PHP-05-25-0143-SC

“Pruning Hazelnuts for Management of Eastern Filbert Blight,” by J. W. Pscheidt et al. Learn more: https://doi.org/10.1094/PHP-04-25-0118-RS

Results from Jake A. Criscuolo et al. demonstrate that #Ralstonia solanacearum R3bv2 is eradicated from infected geranium tissue and growth media by cooler and shorter heat treatments than currently required: https://doi.org/10.1094/PHP-04-25-0121-RS

Soybean sudden death syndrome (SDS) is spreading in North America. Dean K. Malvick and Crystal M. Floyd found that seed treatments can be effective for managing soybean SDS across a range of environments with low soybean cyst nematode populations: https://doi.org/10.1094/PHP-06-25-0163-RS

Fusarium head blight (FHB) is a devastating disease of wheat. R. Debacker Moura et al. present an evaluation of single and two sequential fungicide applications during flowering for FHB management in winter wheat in Kansas: https://doi.org/10.1094/PHP-06-25-0158-RS

J. Hasey et al. report on orchard evaluations of resistance to #Agrobacterium tumefaciens in experimental clonal walnut rootstocks. Learn more: https://doi.org/10.1094/PHP-09-24-0091-RS

“Quantifying the Effects of Fungicides, Cultivars, and Row Spacing on Foliar Diseases and Soybean Yield in the Southern United States,” by @jhonatan_barro et al. Read the open access article to learn more: https://doi.org/10.1094/PHP-03-25-0095-RS

Bacterial diseases cause annual onion yield losses of 5 to 40% in Pennsylvania and New York. Results from Ram Neupane et al. show that most bacteria associated with symptomatic onion tissues are nonpathogenic. Learn more: https://doi.org/10.1094/PHP-03-25-0094-S

Veronica Hypolite et al. present the first report of poinsettia mosaic virus and poinsettia latent virus in crown of thorns in Florida. Learn more: https://doi.org/10.1094/PHP-04-25-0132-BR

In 2021, both ‘Candidatus Phytoplasma trifolii’ and #Spiroplasma citri were detected in cole crops in Morrow County, Oregon. Hannah M. Rivedal et al. detail the molecular identification efforts for both pathogens: https://doi.org/10.1094/PHP-03-25-0101-BR

“Integrated Management of Fusarium Head Blight of Wheat Including Organically Allowed Fungicides in the Midwest United States,” by Kelly Debbink et al. Learn more: https://doi.org/10.1094/PHP-02-25-0051-RS 🌾

Alma R. Solano-Báez et al. present the first report of #Colletotrichum fioriniae causing anthracnose and crown rot in strawberries in Mexico: https://doi.org/10.1094/PHP-04-25-0130-BR

The U.S. Pacific Northwest (PNW) is the most important hop-producing region in the world. Lester A. Núñez-Rodríguez et al. collected 185 soil samples, representing 93 hopyards, to characterize the plant-parasitic nematodes associated with hop in the PNW: https://doi.org/10.1094/PHP-01-25-0011-RS

Farmers suffer large losses to bacterial wilt, a widespread crop disease caused by soilborne #Ralstonia species. José A. Sánchez-Gallego et al. evaluated trehalose, a biostimulant, to reduce bacterial wilt disease on tomato: https://doi.org/10.1094/PHP-04-25-0117-RS

Swarnalatha Moparthi, Matthew A. Bertone, and Michael J. Munster present the first report of leaf spot caused by #Stemphylium lycopersici on #Kalanchoe blossfeldiana in the United States: https://doi.org/10.1094/PHP-04-25-0105-BR

Silver scurf, caused by #Helminthosporium solani, is a surface blemish disease of potato. Purnima Puri, Kenneth E. Frost, and Chakradhar Mattupalli evaluated the sensitivity of H. solani isolates from northwestern Washington to three fungicide treatments: https://doi.org/10.1094/PHP-04-25-0108-RS

Experiments from Savana Marina Martinez, William Samson, and Kerry Elizabeth Mauck document both promising effects and important limitations of elicitor products for virus control in muskmelons grown in the southwestern United States. Learn more: https://doi.org/10.1094/PHP-01-25-0003-RS

Ross J. Hatlen and Timothy D. Miles outline symptoms and signs for halo blight of hop, offer information on the identification of the pathogen, and provide information on pathogenicity testing for #Diaporthe humulicola: https://doi.org/10.1094/PHP-02-25-0058-DG

Results from Alana G. Atkinson et al. indicate that cuprous oxide has potential as an alternative to chlorothalonil for leaf spot control in peanut, both as a stand-alone treatment and as a mixing partner with flutolanil or inpyrfluxam: https://doi.org/10.1094/PHP-02-25-0052-RS

Fanny B. Iriarte et al. present the first report of canker and dieback caused by #Diaporthe ueckeri in cotton in Florida: https://doi.org/10.1094/PHP-02-25-0072-BR

Tar spot, gray leaf spot, southern rust, and northern corn leaf blight are diseases that can significantly reduce Indiana corn yields. Kaitlin G. Waibel et al. share guidance on when to apply a fungicide if conditions are conducive for disease development: https://doi.org/10.1094/PHP-04-25-0103-R

#Septoria leaf spot is a common and devastating disease of field-grown hemp in New York. Jocelyn A. Schwartz et al. conducted fungicide field trials to test products previously deemed efficacious and to test products of interest to New York #hemp growers: https://doi.org/10.1094/PHP-04-25-0127-RS

Abdelrazek S. Abdelrhim, Douglas S. Higgins, and Mary K. Hausbeck identified barley (commonly used as an interseeded cover crop in onion muck production) as a potential source of an early-season, conidia-based inoculum for #Stemphylium leaf blight: https://doi.org/10.1094/PHP-01-25-0036-RS

Results from Maria A. Lugo-Duque et al. provide evidence for flutriafol as a promising fungicide for management of laurel wilt in avocado production. Learn more: https://doi.org/10.1094/PHP-02-25-0050-RS 🥑

Nitha Rafi, Matias Dominguez, and Febina M. Mathew identified soybean accessions with resistance to Fusarium proliferatum, along with novel SNP markers, which could enhance breeding programs aimed at developing cultivars with resistance to Fusarium root rot: https://doi.org/10.1094/PHP-03-25-0100-RS

Results from Kaitlin G. Waibel et al. show that once tar spot of corn is found locally, favorable environmental conditions of moderate temperatures and fluctuating periods of seasonal moisture may increase the risk of a severe epidemic developing in a field: https://doi.org/10.1094/PHP-08-24-0082-S

Ana M. Vázquez-Catoni, Amaya Atucha, and Leslie A. Holland investigated practices of cranberry growers related to propagative material acquisition, storage, and bed establishment, with a focus on disease presence and concerns. Learn more: https://doi.org/10.1094/PHP-05-25-0135-S

“A Diagnostic Guide for Fusarium Root Rot of Soybean,” by Denis N. Colombo et al. Read this open access Diagnostic Guide to learn more: https://doi.org/10.1094/PHP-02-25-0075-DG 🫛

Updated annually, @cropnetwork.bsky.social fungicide efficacy guides inform fungicide selection for diseases of corn and soybean. Nabin K. Dangal et al. analyzed rankings from U.S. and Ontario field trials to validate efficacy across disease severities: https://doi.org/10.1094/PHP-02-25-0073-RS

Results from Buddhika Amarasinghe Dahanayaka et al. confirmed that some populations of two powdery mildew species have developed quinone outside inhibitor resistance in Australian mung bean fields. Learn more: https://doi.org/10.1094/PHP-03-25-0081-SC

Milsha George et al. offer an overview of the symptoms in soybean caused by #Diaporthe species, as well as a summary of methods for culture isolation, identification, long-term storage, and pathogenicity tests. Read this Diagnostic Guide to learn more: https://doi.org/10.1094/PHP-03-25-0096-DG

Maira R. Duffeck et al. provide the first report of the pathogen #Spiroplasma kunkelii associated with corn stunt symptoms distributed across southern, great plains, central corn belt, and northeastern states. Learn more: https://doi.org/10.1094/PHP-03-25-0082-SC 🌽

Diagnostic Guide: “Sunflower Head Rot Diseases: Rhizopus Head Rot,” by Susan Thompson et al.: https://doi.org/10.1094/PHP-10-24-0093-DG

Get a First Look 🔍: “Sensitivity of Helminthosporium solani Isolates from Northwestern Washington to Azoxystrobin, Difenoconazole, and Fludioxonil,” by Purnima Puri et al.: https://doi.org/10.1094/PHP-04-25-0108-RS

Sugar beets produced in Minnesota and North Dakota are stored for up to 280 days before processing. M. Z. R. Bhuiyan et al. present the first report of Penicillium paneum and P. crustosum as causal organisms of sugar beet storage rot in the United States: https://doi.org/10.1094/PHP-08-24-0079-RS