| http://www.w3.org/ns/prov#value | - Optionally, the fertilizer compositions may include an inorganic component comprising minerals which provides an additional source of phosphorous and/or potassium, and other minerals such as but not limited to calcium, magnesium, and sulfur; and micronutrients, such as but not limited to boron, copper, iron, manganese, molybdenum, and zinc.
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