Plants' essential chemical elements
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American Nurseryman. 206: 10-11.
Every garden center and hardware store sells fertilizer guaranteed to "feed" plants. In a strict sense, we can't feed plants. Food contains an energy source. Green plants capture solar energy and make their own food through photosynthesis! Photosynthesis and other metabolic processes require chemical elements in appropriate doses for plants to survive and thrive. We can help, directly or indirectly, to provide plants these essential chemical elements.
Smith, Kevin T. 2007. Plants'' essential chemical elements. American Nurseryman. 206: 10-11.