Which of the following factors is NOT part of soil health assessment in Ontario?

In soil health assessments in Ontario, various factors contribute to understanding the overall condition and sustainability of soil. While soil color can provide some basic insights, such as organic matter content and moisture, it is not considered a primary indicator of soil health.

Field conditions, soil texture, and crop conditions are critical components of the assessment process. Field conditions encompass aspects like land management practices and the presence of erosion or compaction, which directly influence soil health. Soil texture, which refers to the proportion of sand, silt, and clay, is essential because it affects water retention, nutrient availability, and microbial activity. On the other hand, crop conditions can indicate soil health through the assessment of plant growth and yield, which respond sensitively to soil quality.

Thus, while soil color may provide some valuable information, it does not play a central role in the comprehensive assessment of soil health compared to the other factors listed.