Illinois Field Crop Applicators Practice Test

For which crop are Atrazine, princep, exceed, and lumax/lexer commonly used?

1. Corn

2. Soybeans

3. Wheat

4. Barley

The correct answer is: Corn

Atrazine, Princep, Exceed, and Lumax/Lexar are commonly used herbicides that are particularly effective in combating various weeds in corn cultivation. These herbicides are known for their ability to control both annual and perennial weeds, making them valuable tools for maintaining crop health and yield in corn fields. Atrazine, for example, is a selective herbicide widely utilized in corn production because it targets weeds without harming the corn plant itself. Princep and Lumax/Lexar also offer broad-spectrum control and are often employed in integrated weed management strategies for corn. The compatibility of these herbicides with the corn growth cycle contributes to their prevalent use in this crop. In contrast, while some of these herbicides may have limited applications in other crops like soybeans, wheat, or barley, they are not the primary choices for those crops. Soybeans, for instance, typically require different types of herbicides to address the specific weed profiles associated with them.