Nov 19, 2019
Although Calcium is considered a secondary nutrient, Dr Steve Petrie explains that it should be one of the most important nutrients to consider. Calcium is the 5th most common element in the earths crust and can be 2nd or 3rd most common element in plants. Despite its abundance, we need to know how much is plant...
Nov 12, 2019
Dr. Steve Petrie discusses the 4 R's of Potassium:
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