What may break patterns in normal cultivation indicate to the pilot?

Recognizing breaks in the normal patterns of cultivation can signal potential hidden hazards to the pilot. These anomalies might indicate various issues such as uneven growth or dying crops, which can be a result of problems like soil contamination, machinery damage, or other geological disturbances. Additionally, such irregularities can create unexpected obstacles in the field during aerial applications, making it crucial for the pilot to identify these hazards before proceeding with operations.

The other choices can also be considerations but do not directly correlate with break patterns as much as hidden hazards do. For instance, while new planting techniques may cause changes in the field appearance, they do not necessarily imply a risk to aerial application. Similarly, potential bad weather is typically forecasted and considered separately from field conditions. While the presence of pests might influence plant health and growth patterns, it would manifest differently than a break in pattern and may not always be discernible from aerial observation. Thus, hidden hazards is the most suitable interpretation of breaks in normal cultivation patterns for a pilot's safety and operational effectiveness.