How to Use This Bulletin
Recommendations are organized into sections by crop. Within a crop, specific pests are listed along with their control recommenda tions. Frequent users may want to insert tabs for easy location of each crop section.
This publication focuses on chemical tactics and should be used in conjunction with an overall sound program of integrated pest management. Chemical recommendations are included for insect, disease and nematode control, as well as handling pesticides safely to prevent human and environmental harm. The management suggestions in this bulletin are designed to help protect the grower’s crop from the pre-plant stage to market and, in certain cases, through storage. The suggestions include the basic in formation necessary for the chemical compo nents of pest control. The majority of the suggested materials have been tested at Michigan State University to determine the most effective materials, rates of application, timing of applications, method of application and site of application on the plant or in the soil. When this information is coupled with week-to-week information on pest populations, as disseminated in Crop Advisory Teams (CAT) Alerts, the minimum number of chemicals and treat ments need be applied to attain the desired level of control.
It is extremely important that growers monitor (scout) each individual field for potential pest problems. Pest populations (insects, nematodes, and diseases) vary not only from year to year, but also from field to field and even within a given field. Pest populations vary in first appearance, number of individuals and severity of damage. These observations are the prime responsibility of the grower. Growers should make them known to county and university Extension personnel. Through this type of two-way communication, Michigan agriculture will remain in the fore front in quality and quantity. A grower’s choice of a particular pesticide should be based on pests present, beneficial insects present (including honeybees and predators and parasites of pests), available materials, days to harvest, environmental and personal safety and cost.
Materials and rates of application listed are based on the latest information available at the time this publication went to press. Materials marked with an asterisk (*) are particularly recommended for problem infestations.
Recommendations are changed as products are removed from the market, new products are introduced, new uses are found for old products, or new restrictions are placed on their use. Your county MSU Extension agent is informed of the changes as they occur through Crop Advisory Team (CAT) Alerts or CEENET, the MSU Extension computer network. Check with your Extension agent for updates that have occurred since the publication of this bulletin. Always read and follow the directions and lim itations on the pesticide label.
The information given here is for educational purposes only. Reference to commercial products or trade names is made with the understanding that no discrimination is in tended and no endorsement by MSU Extension is implied.
Some of the more hazardous pesticides are on the Restricted Use Pesticide (RUP) list. You will need to be certified by the Michigan Department of Agriculture in order to buy and use these RUP’s. Your county Extension agent has a current listing of the RUP’s and will ad vise you on the procedures for certification.