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Peanut Leaf Spots

By: Barbara Shew

This factsheet covers the signs, symptoms, and control of early leaf spot in peanuts in North Carolina.

2024 Peanut Information

By: David L. Jordan, Dustin Auman, Rick L. Brandenburg, Greg Buol, Ashley Collins, Jeff Dorfman, Jeffrey Dunne, Ethan Foote, Adrienne Gorny, LeAnn Lux, Dominic Reisig, Gary T. Roberson, Brian Royals, Barbara Shew, Derek Washburn

This guide for growers, updated annually, provides information on production and pest management practices applicable to growing peanuts in North Carolina.

Peanut Disease Management

By: LeAnn Lux, Barbara Shew

This publication, chapter 6 of the 2024 Peanut Information handbook, provides details on how to use integrated methods to manage major peanut diseases.

Cylindrocladium Black Rot of Peanut

By: Barbara Shew

This factsheet offers information on the signs, symptoms, and control of cylindrocladium black rot in peanut production.

Temperature and Dose Influence Phoma Macrostoma Efficacy on Seedling Broadleaf Weeds

By: Joe Neal, Barbara Shew, Rocco Schiavone

Phoma macrostoma, a potential biocontrol agent for turfgrass weeds, was isolated from Cirsium arvense plants in Canada and is being tested in other regions of North America for control of broadleaf weeds in turf. This research was conducted to investigate the effects of varying temperature conditions on Phoma macrostoma control of seedling broadleaf weeds. Experiments were conducted in growth chambers to compare the efficacy of three doses of Phoma macrostoma on two species, Senecio vulgaris and Lamium amplexicaule grown in 4 temperature regimes – 15/20, 20/25, 25/30 and 30/35°C (dark / light period) temperatures. These data suggest that high temperatures common in the southeastern United States should not be an impediment to activity of Phoma macrostoma efficacy, and may actually improve the control of some broadleaf weed species.