In short - concentration of the fertilizer salts - one dilute, the other concentrated
dry types, depends. Some are not taken up below 45 degrees (it's either urea or ammonium nitrate), others as soon as water brings the dilute inorganic salts to the root hairs.
First of all fertilizer is not food for plants. People who think they feed trees should feed the plant real good and place it in a dark closet and see how long it can be fed. Plants manufacture their own food. Animals do not. Their are exceptions like the Ghost Flower which has no chlorophyll. It gets its food from other plants. People who call essential elements food and nutrients have no understanding of photosynthesis. When you apply ammonium nitrate it can burn plants. Remember when we say fertilize that there are 17 essential elements. Most people only care about 3 elements. N-P-K. What about the requirement of the plant for the other elements? Beware of product pushers.
You may find some useful information here.
Techno Tree Biology Dictionary
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. Look up "logging".
Articles written by DR. ALEX L. SHIGO, one of the foremost authorities worldwide on tree systems today online at
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Literature Available by Dr. Shigo is here:
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Hard to get Documents
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If you have any suggestions please let me know. 610-864-5251
John A. Keslick, Jr. Tree Biologist
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of so-called TREE EXPERTS who do not understand TREE BIOLOGY! Storms, fires, floods, earthquakes, and volcanic eruptions keep reminding us that we are not the boss.
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