Yes, soil type can affect the performance of humates. A USDA study found that in dry years with low rainfall, humic substances improved productivity across different soil types. However, in wetter years, the benefits were more noticeable in poorly-drained soils. Humic substances generally act as a form of “insurance,” boosting plant resilience to stress. For example, treated corn withstood a windstorm better than untreated plants, demonstrating their ability to improve plant strength and stress tolerance.

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