Illinois Field Crop Applicators Practice Test

True or false: No till or reduced tillage decreases perennial and biennial weed species.

1. True

2. False

3. Depends on the soil type

4. Only if used with cover crops

The correct answer is: True

No till or reduced tillage practices can indeed play a significant role in managing weed populations, including perennial and biennial species. These methods work by disrupting the life cycle of weeds that rely on soil disturbance for germination and establishment. Perennial and biennial weeds generally thrive in disturbed soils where they can receive more sunlight and resources. By minimizing soil disturbance, no till and reduced tillage create conditions that are less favorable for these weeds to thrive. This can lead to a reduction in their populations over time, as the seed bank within the soil becomes less viable and competitive perennial and biennial species are less able to establish. However, it is important to note that while this approach can be effective, success can vary based on other factors, such as the specific weed species present, overall management practices, and environmental conditions. Thus, the effectiveness of no till or reduced tillage in decreasing these types of weeds supports the assertion made in the question, affirming that such practices can be beneficial in weed management strategies.