Oklahoma Applicators License Core Practice Exam

What is the most effective way to control plant diseases?

1. Application of pesticides

2. Preventive measures only

3. Biological controls

4. Cultural practices

The correct answer is: Preventive measures only

Preventive measures are essential in controlling plant diseases because they aim to stop diseases before they can establish or spread. This approach emphasizes practices such as selecting disease-resistant plant varieties, ensuring proper sanitation, and maintaining ideal growing conditions, which together help create an environment less conducive to the development of diseases. In plant care, it is often more efficient to prevent disease than to treat existing problems. Preventive measures can be cost-effective and environmentally sustainable, reducing the need for chemical applications and minimizing potential harm to beneficial organisms. By promoting strong plant health through good cultural practices, healthy soil management, and proper watering, the likelihood of plants encountering diseases diminishes significantly. While other options like the application of pesticides, biological controls, and cultural practices can be part of an overall integrated pest management strategy, preventive measures form the foundation of effective disease control, making them the most effective approach.