Harrell’s CalMAX G is formulated with activated humic acid. CalMAX G provides Calcium and Sulfate Sulfur while aerating high CEC soils and decreasing excess sodium levels. The proper application rate depends on soil test results. Micro Greens Grade. Dihydrite Gypsum with 2% Activated Humic Acid
Harrell's Balanced Approach is a scientifically supported, integrated, and proactive use of agronomic resources to maximize plant health and consistency.
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In addition to being the nation’s largest distributor of branded fungicides, herbicides, and insecticides, Harrell’s produces custom-blended fertilizers, specialty liquids, and wetting agents. Additionally, Harrell’s is the exclusive US owner, formulator, and distributor of all POLYON® branded products.