Filtering by tag: sweetpotato ✕

Galls and bumps on a sweetpotato storage root caused by root-knot nematodes (particularly, the guava root-knot nematode, Meloidogyne enterolobii).

Nematicides New and Noteworthy: Label and Registration Updates for Nematicides in Sweetpotato

Root-knot nematodes (RKN; Meloidogyne spp.) are microscopic, soilborne roundworms that feed on plant roots. In sweetpotato, they cause galls, bumps, and knots to form on the sweetpotato storage root…

Composite photograph of guava root-knot nematode damage on sweetpotato. On the left side are two photos of storage roots with galls caused by GRKN. On in the middle is GRKN galls on a sweetpotato fibrous root. On the right is a sweetpotato with skin peele

Guava Root-Knot Nematode: 2024 Emergency Management Recommendations for Sweetpotato Producers

Nothing beats the delicious and nutritious sweetpotatoes from North Carolina. Yet the guava root-knot nematode (GRKN; Meloidogyne enterolobii) continues to threaten production of this important…

black rot symptoms on Sweetpotato

EPA Issues Label Approving Mertect in Sweetpotatoes

Updates for Sweetpotato Producers in NC: EPA issues Section 3 label for Mertect (thiabendazole) in sweetpotatoes postharvest and EU raises MRL to 3 ppm From Dr. Lina Quesada-Ocampo and Camilo H.…

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…

Black rot of sweetpotato

Section 18 Label Renewal Approved for Use of Mertect for Black Rot Control in Sweetpotato

From Madison Stahr and Dr. Lina Quesada-OcampoThe environmental protection agency (EPA) has renewed the specific exemption section 18 emergency label, originally obtained in 2016, for the use of…

Raw sweet potatoes piled together

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

The specific exemption section 18 label obtained in 2016 for using Mertect (thiabendazole) for control of black rot (caused by the fungus Ceratocystis fimbriata) postharvest on sweetpotatoes in North…