Filtering by tag: pest alert ✕

Chrysanthemums

Mum Growers, Beware of Pythium

July is the month when mum producers start seeing wilting plants due to Pythium root rot, with more cases turning up in August and September. If you have not been taking steps to prevent losses to…

CDM symtoms on squash leaf

Squash Downy Mildew Found in North Carolina

Written by Mariana Prieto-Torres, Savithri Purayannur, Mike Adams, and Lina M. Quesada-Ocampo Pseudoperonospora cubensis, the causal agent of cucurbit downy mildew (CDM), was confirmed on butternut…

Basil downy mildew spores on underside of basil leaf

Basil Downy Mildew Confirmed in Pender County, NC, July 28, 2021

Basil downy mildew has been confirmed on the variety Genovese in a homeowner garden in Pender County, North Carolina. The disease has not been found on the resistant varieties Thunderstruck,…

Cucurbit leaf with yellow mosaic mottling and prominent veins

Cucurbit Downy Mildew Confirmed in Western NC, July 28, 2021

Cucumber downy mildew (CDM) has been confirmed on cucumber plant samples from a commercial grower in Haywood County, NC. Approximately 75-100% of plants were affected. Leaves showed symptoms typical…

Late blight on tomato fruit

Late Blight on Tomato Confirmed in WNC Region --July 28, 2021

Late blight on tomato has been confirmed near Macon County, NC on July 27, 2021.UPDATE August 3, 2021: The strain has been identified as US-23, which has been the dominant strain in recent years.…

black rot symptoms on Sweetpotato

Section 18 Label Renewal Approved for Use of Mertect (Thiabendazole) for Control of Sweetpotato Black Rot Postharvest in Domestic Markets

Written by Camilo H. Parada-Rojas and Dr. Lina M. Quesada-OcampoThe United States (U.S.) Environmental Protection Agency (EPA) renewed the section 18 emergency label, originally obtained in 2016, for…

Leaf with cucumber downy mildew symptoms

Cucumber Downy Mildew Found in North Carolina

Written by Mariana Prieto-Torres, Mike Adams, Dr. Savithri Purayannur, and Dr. Lina M. Quesada-Ocampo. Pseudoperonospora cubensis, the causal agent of cucurbit downy mildew (CDM), was confirmed on…

Pile of unwashed sweet potatoes with soil and rootlets

How to Identify and Manage Sweeetpotato Scurf Caused by Monilochaetes Infuscans

From Camilo Parada and Dr. Lina Quesada-OcampoIn collaboration with the Plant Disease and Insect Clinic at NC State University, we confirmed several cases of sweetpotato scurf in North Carolina.…

Black rot of Sweetpotato

Sweetpotato Black Rot Found in Storage Facilities

From Madison Stahr and Dr. Lina Quesada-OcampoSweetpotato black rot, caused by the fungal pathogen Ceratocystis fimbriata, was found in two commercial sweetpotato storage facilities in January of…

Pumpkin downy mildew

Pumpkin Downy Mildew Found in Surry County, North Carolina

Written by Lina Quesada-Ocampo and Kimberly D’ArcangeloCucurbit downy mildew, caused by the oomycete pathogen Pseudoperonospora cubensis, has been confirmed on a pumpkin sample from a production…