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Disease Management

Corn Earworm Management: A Survey of Organic Sweet Corn Growers

The objectives of this project are to attain information about the corn earworm management strategies of organic sweet corn growers. This information will be used to achieve two outcomes: creation of an extension publication about corn earworm management strategies, aimed at organic farmers, and collection of data that will inform longer-term efforts of developing earworm-resistant sweet corn cultivars for organic farmers.

Flowering Plants in Organic Strawberry Fields to Enhance Natural Enemies and Pollinators and Improve Pest Control and Fruit Quality

Methods to conserve and augment beneficial insects in modern horticultural production systems are needed given issues with pest resistance to insecticides, pest resurgence due to lack of natural enemies, and replacement of native with invasive species. Production systems also require pollinators and, in recent years, declines in managed and wild species have been well documented. Organic agriculture systems are less disturbed by insecticides and well suited to benefit from practices designed to improve abundance and diversity of beneficial insects.

A New Approach for Successful Organic Peach Production in the Southeast

The production of organic peaches is extremely difficult under the humid conditions of the Southeast due to high pest and disease pressures, and the lack of effective, organically approved pesticides. Consequently, only very few growers have taken the risk and transitioned into organic peach farming. This proposal aims to provide growers in the Southeast with a new tool to reduce the risk of transitioning to organic production of peaches. This strategy consists of the use of paper bags to physically protect the fruit from pests and diseases to reduce reliance on spray applications.

Impact of Disease Suppressive Composts on Organic Vegetable Quality, Composition and Yield

Project Objectives

-Analyze several animal manure-based, organic-approved compost products for suppression of important soil-borne pathogens of vegetable crops in the Northeast -Determine applicability of a farmer-based test kit for assessment of compost maturity to predict suppressiveness -Evaluate compost effects on plant stand and crop composition -Determine changes in microbial activity, disease suppressiveness and soil nitrate nitrogen of organically managed soils after addition of a compost 

Evaluation of mulching materials and limestone rates for management of fusarium wilt of sweet basil

Basil fusarium wilt is a seed-borne disease that can severely reduce basil yields. The biggest concern, however, is that the pathogen can persist in the soil for ten or more years preventing the future use of the land for basil production. The objective of this study was to develop organic control methods that would allow production in infested soil. Several organic mulches, a biocontrol product (Rootshield), and lime applications were examined on soil intentionally infested with fusarium. Basil plants mulched with a composted pine bark had the lowest incidence of fusarium wilt.

Intercropping with resistant varieties for management of plant diseases in organic tomato production

The objectives of this research were to: 1) Evaluate susceptibility to early blight in 16 heirloom and modern hybrid cultivars. 2) Evaluate whether disease incidence and severity are reduced on a susceptible tomato variety intercropped with a resistant variety, compared to a monoculture of the susceptible variety.

Aerated compost tea and other alternative treatments for disease control in pumpkins

Objectives Statement a. To investigate the effectiveness of compost tea in suppressing fungal diseases of pumpkins and promoting overall crop health and yields; to demonstrate that compost tea can be an effective tool for managing fungal diseases when used as part of an organic / non-chemical farming system. Modification: The proposal was originally written with potato as the test crop. This was changed to pumpkin to ensure disease presence. b.

Tomato Foliar Disease Control Using OMRI-Approved Materials

Seven materials approved for organic production were tested for foliar disease control on tomatoes on a certified organic farm in western New York. Four were commercial products registered for disease management on tomatoes (Plantshield, Mycostop, Trilogy, Champion WP). Three were materials thought to strengthen plant health and disease resistance through either soil or foliar application (CaCO3, SW-3, Humega). Plantshield is a formulation of the beneficial fungus Trichoderma harzianum labeled for foliar and soil drench applications.

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