Get yourself a bag of fertilizer 12-12-12 or even 19-19-19, carry some with you (works great when riding atv) You find a wild apple tree or trees throw some around the tree out at the last 1/3 of the diameter of the tree as this is where the feeder roots are. Below the branches on out side of tree. Same with other wild plants that produce berries or fruit. This will help provide more fruit and better fruit for wildlife to eat.
KH
It's just a name that IMHO won't ever be duplicated KH
5-10-10 works great around oaks. The lower nitrogen yields sweeter acorns, while the phosphate boosts growth and production of mass. Careful when fertilizing oaks. Keep the nitrogen low, and the phosphate and potash moderate. They burn easilly.
i been putting a dose on some young white oaks for awhile now.they are growing good.
I went to the woods because I wished to live deliberately, to front only the essential facts of life, and see if I could not learn what it had to teach, and not, when I came to die, discover that I have not lived. ......Henry David Thoreau
Working farms and landscaping,sod farms,over the years too much of any fertilizer will burn any plant. Bn'B,Yes different plants need different fertilizer thats why theres so many different types. Only reason I use triple formulas is that over the years I learned to use it in small amounts and spread it around so the hot spots are less likely. I believe the plants will use what they need as they need it if spread thin. This is totally of base to most people, farmers included. If I notice (secret to good plants is keeping an eye on them) that they are growing too tall next time use a lower nitrogen, more potash to grow roots out more, and phosphate as you said to help top growth. I've always gotten these two confused, they are better in conjunction in equal parts unless growing potatoes, or root crops.
I know what to do after I see how the tree or bush /plant reacts to the first application of triple mix,(never got into soil sampling in most wild habitats, thats why a triple mix then adjust as needed. Most times it will react to the nitrogen quick then level off as nitrogen breaks down faster than the rest.
To sweeten any soil or fruit/vegetable lime is used.
This is how I do it and its not cut in stone,as I said the key is watch the plants for reactions, and adjust. Weather ,rain ,dry spells also effect how a plant uses the nutriments in the soil.
You made some very good points in your post, I'll keep them in mind .
It's just a name that IMHO won't ever be duplicated KH