This is the third in our series of Chemical Updates for 2001. This information, compiled and updated with the help of chemical manufacturers, is the most complete information of its kind. It is presented in a format that puts the solution to nearly every turf disease problem at your fingertips.

The tables in the following pages contain information regarding:

  • Active ingredient. The chemicals are listed by their active ingredients. The table includes nearly every EPA-registered fungicide 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 tells you if the formulation that you prefer is available. This information will also help you develop tank-mixing schemes.

  • Labeled for ornamental use. 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. This section lists nearly every turfgrass disease and the chemicals that provide effective control.

The table lists the 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 controls the pests that you want it to. The same applies to other registration issues such as use sites.

The Fungicide Sources table on page 42 cross references the active ingredients of each chemical with the trade or brand names and the suppliers. On the page following this table is a directory so that you can contact the chemical companies that have products listed in the tables.

However, these tables will not be useful if you cannot identify the pathogen that you wish to control. I cannot overstate the importance of proper pathogen identification. 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. See page 44 for information on how to sample plants for diagnostic purposes.

Product labels contain important information that improves applicator safety and your level of control when using the product. Various chemicals have environmental requirements for successful control of specific pathogens. 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 control.

Use the tables for preliminary planning and reference only. They are not substitutes for label information, and they only serve as a recommendation. If you wish to view a label before purchasing a product, contact the suppliers. They will usually supply labels to those who ask. Also, most chemical manufacturers have websites that display label and MSDS information for their products.

This is our last of the 2001 updates 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.

We're also posting the updates on our website www.grounds-mag.com. Using a searchable format, you can locate chemicals by active ingredient or pests controlled. Then, you can cross reference the controls with manufacturers to simplify the process of looking for fungicides.

The tables begin on page 40. Active ingredients that are highlighted in blue type are recently registered or reregistered for turf and ornamental use.

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