CHEMICAL UPDATE: Turfgrass Fungicides

Presented in a format that puts the solution to nearly every turf disease problem within easy reach, fungicides are the subject of our third Chemical Update for 2004. Compiled and updated with the help of chemical manufacturers, this is the most complete reference of its kind. The tables in the following pages list fungicides and their characteristics by the following categories:

  • Active ingredient

    Fungicides are listed by their active ingredient, rather than brand name. This avoids the confusion that can result from multiple brands that use the same active ingredient. We include nearly every fungicide registered by the Environmental Protection Agency for turfgrass use.

  • Mode of action

    This lists whether the chemical behaves as a contact or systemic.

  • Fungicide group

    This column lists the chemical family or class. This information is critical when developing chemical rotation schemes to combat resistance.

  • Formulations available

    This column lists available formulations for each chemical. This information can help you develop tank-mixing schemes and select products compatible with your preferred method of application.

  • Ornamental labeling

    This may be important if you need a fungicide that can also be applied to ornamental plantings.

  • Diseases controlled

    This is the reason you use fungicides and comprises the bulk of the Update. This section lists nearly every turfgrass disease and the chemicals that provide effective control.

The table lists fungicides by their active ingredients. However, the “diseases controlled” is a compilation based on the labels of all products that are available with that active ingredient. Typically, products with the same active ingredient have similar labeling, but this is not always true. Be sure to carefully read labels to ensure that the product you wish to use has labeling for the target pests. The same applies to other registration details, such as use sites, etc.

The Fungicide Sources table lists trade or brand names and the suppliers that sell them. Following this is a directory that provides you with contact information for the chemical companies whose products are listed in the tables.

These tables will not be useful if you cannot identify the pathogen that you wish to control. The importance of proper pathogen identification cannot be overstated. Many pathogens exhibit similar symptoms. However, the controls for each may be different. If you are having difficulty, consult an extension specialist or other expert. Also, you can send samples to a diagnostic lab.

Product labels contain important information that improves applicator safety as well as your level of control when using the product. Therefore, read the labels of the chemicals you apply. It is not only the law, but also a prerequisite for getting the most out of your application.

Use these tables for preliminary planning and reference only. They are not substitutes for label information. If you wish to view a label before purchasing a product, contact the supplier. Suppliers readily provide labels to those who ask. Also, most chemical manufacturers have Web sites that display label and MSDS information for their products. Another source for labels is the new Pesticide Search on our Web site at Powered by Greenbook, this online resource also features a list of newly registered chemical products as well as label changes for existing products.

This is our last 2004 Update devoted solely to turfgrass products. Along with the January (herbicides) and February (insecticides) Updates, it's a comprehensive guide for your turf-pest-management planning. But don't overlook subsequent Updates throughout the year, which will cover pesticides for other uses, such as fertilizer/pesticide combinations, ornamentals, vertebrate controls, PGRs and more.

For a comprehensive list of the Chemical Update tables that accompany this article, go to our Industry Research resource at>.

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