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Browse by Author: Daisy Ahumada
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Chapter 3: Crop Production Management - Corn

By: Ron Heiniger, Dominic Reisig, Daisy Ahumada

This chapter of the North Carolina Organic Commodities Production Guide covers key management practices for organic corn production: hybrid selection, planting date, crop rotation, soil fertility and plant reproduction, and propagation.

Bacterial Blight of Cotton

By: Daisy Ahumada Cotton Disease Information

This factsheet describes bacterial blight of cotton, including identification and disease management.

2024 Cotton Information

By: Keith L. Edmisten, Daisy Ahumada, Charles W. Cahoon, Guy D. Collins, Jeffrey H. Dorfman, Luke Gatiboni, Adrienne Gorny, Anders Huseth, Dominic Reisig, Rachel Atwell Vann, Derek Washburn, David H. Hardy

2024 Cotton Information is meant to help growers plan for the coming year and make management decisions based on the unique opportunities and challenges the year might bring.

Chapter 6: Crop Production Management - Flue-Cured Tobacco

By: Matthew Vann, Daisy Ahumada, Maggie James, David Suchoff

This chapter of the North Carolina Organic Commodities Production Guide covers key management practices for organic flue-cured tobacco production.

Corn Ear Rots: Managing Mold and Mycotoxins

By: Daisy Ahumada Corn Disease Information

Corn ear rot is a disease of corn caused by various types of fungi, including Fusarium spp. , Aspergillus spp. Penicillium spp., and Stenocarpella maydis (Diplodia Ear Rot). Ear rot diseases in corn are characterized by the molding and decay of corn ears. Environmental conditions, the susceptibility of the variety to disease, and previous disease populations in the field contribute to the emergence of corn ear rot and the severity of corn yield loss.

Black Shank of Tobacco

By: Daisy Ahumada Tobacco Disease Information

Black shank is an economically important disease of tobacco that threatens production in North Carolina. This factsheet provides information about the causal organism (Phytophthora nicotianae) and its management.

Root Knot Nematode of Tobacco

By: Daisy Ahumada, Adrienne Gorny Tobacco Disease Information

Nematodes are an economically important pest for flue-cured tobacco production. Root knot nematode is particularly damaging due to the wide host range and number of species of root knot nematode found in North Carolina.

Corn Rusts: Common and Southern Rust

By: Daisy Ahumada Corn Disease Information

Common and southern corn rusts may affect corn in North Carolina. Management for each is specific to the rust, and proper identification is necessary to determine the appropriate tools to use.

Cotton Seedling Diseases

By: Daisy Ahumada Cotton Disease Information

Seedling diseases are a major disease concern for North Carolina cotton production. Numerous fungi are capable of causing seedling disease, and potential damages are heavily influenced by environmental conditions.

Granville Wilt of Tobacco

By: Daisy Ahumada Tobacco Disease Information

This factsheet shares the symptoms and control of Granville Wilt, a devastating disease of tobacco in North Carolina.

Root-Knot Nematode of Cotton

By: Daisy Ahumada, Adrienne Gorny Cotton Disease Information

Cotton root-knot nematodes are capable of causing significant losses to cotton production. In addition to direct damage, root-knot nematodes allow for secondary pathogens to impact yields. This publication describes root-knot nematodes and their management in cotton.

Cotton Foliar Diseases: Areolate Mildew, Target Spot, and Other Leaf Spot Diseases

By: Daisy Ahumada Cotton Disease Information

Areolate mildew, originating in Alabama in 1890, and target spot, first described in Mississippi in 1959, have both become increasingly prevalent across the southeastern United States over the past three decades.

Disease Management in Cotton

By: Daisy Ahumada, Adrienne Gorny

This publication, chapter 9 of the 2024 Cotton Information handbook, covers disease management practices for cotton production.

Gray Leaf Spot in Corn

By: Daisy Ahumada Corn Disease Information

This corn disease information note offers information on the symptoms and management of gray leaf spot in corn production in North Carolina.