Filtering by tag: cucurbitalert ✕

Cucumber plants with yellow and brown leaf spots trained on strings over a plastic-covered bed

Cucumber Anthracnose Reported in North Carolina | June 2018

Leaves infected with cucurbit anthracnose, caused by Colletotrichum orbiculare, were submitted to the NC State University Vegetable Pathology Lab and confirmed as positive.Anthracnose can be confused…

Lobed green leaves with prominent white midrib and small brown spots

Watermelon Powdery Mildew Found in South Carolina

Dr. Anthony Keinath, Vegetable Pathologist at Clemson University in South Carolina, has found powdery mildew in watermelons and issued an alert. Because the pathogen is airborne, we expect that…

Cucumber plant leaves with yellow spots, some leaf edges damaged and small holes

Cucumber Downy Mildew Reported in North Carolina

Written by Lina Quesada-Ocampo and Kimberly D’ArcangeloCucurbit downy mildew (CDM) was confirmed on a cucumber sample from a production field in Sampson County on May 30 of 2018. Leaves presented…

Cucurbit downy mildew dark sporulation on back side of cucumber leaf (Photo Lina Quesada, NCSU vegetable pathology)

Cucumber Downy Mildew Confirmed in North Carolina and South Carolina

Written by Lina Quesada-Ocampo and Kimberly D’ArcangeloCucurbit downy mildew was reported today (June 6, 2017) in commercial cucumber fields in Duplin County, North Carolina and Horry County, South…

Meloidogyne enterolobii root knot damage on sweetpotato (Dr. Weimin Ye, NCDA&CS)

Emergent Nematode in Sweetpotato and Other Vegetable Crops

This month Dr. Weimin Ye, nematode assay section chief at the North Carolina Department of Agriculture and Consumer Services (NCDA&CS;) issued an alert warning sweetpotato growers about an emergent…

Hand holding a lobed green leaf with small yellow spots across its surface

Watermelon Downy Mildew Reported in North Carolina

Downy mildew, caused by the oomycete Pseudoperonospora cubensis, has been reported in watermelon in North Carolina. It was observed in Nash county (June 17, 2016) and the field presented 5% incidence…

Lobed green leaves with prominent white midrib and small brown spots

Powdery Mildew on Watermelon Found in South Carolina

Dr. Anthony Keinath, Vegetable Pathologist at Clemson University Coastal Research & Education Center, has informed us that powdery mildew was found this week on seedless watermelon at the Coastal…

Pale green plant leaves with irregular brown necrotic spots and browned edges

Pseudomonas Leaf Spot Reported on Watermelon Transplants

In the past week we have seen a few cases of watermelon transplants with leaf spot symptoms (Fig. 1). Examination of samples at the NCSU Plant Disease and Insect Clinic has revealed that the culprit…

Close-up of cucurbit downy mildew symptoms on cucumber leaf. Note angular lesions bound by leaf veins (Photo Dr. Lina Quesada, NCSU Vegetable Pathology Lab)

Cucurbit Downy Mildew in FL, GA, and SC

Cucurbit downy mildew, caused by the oomycete Pseudoperonospora cubensis, is a yearly concern for North Carolina cucurbit growers. The disease affects cucurbit crops such as cucumber, watermelon,…

Figure 1: adaxial side of a cucumber leaf showing downy mildew symptoms (Charles Mitchell, N.C. Cooperative Extension)

Cucurbit Downy Mildew Found in Franklin County, North Carolina

Cucurbit downy mildew was confirmed on a cucumber sample from a commercial field in Franklin County submitted to the Plant Disease and Insect Clinic on June 23 of 2014. Leaves presented approximately…