supplimental feeding for trees

ethompson

5 year old buck +
This was hard to put into words for me. Here it goes
I want to add some vitamins and or minerals every time I water my trees. I ran water lines to where I have trees. I want to hook up something directly to the spigots to where it siphons from the vitamin or mineral source to the water hose. I bought an up stream chemical injector (not sure this will work). Im looking for the sup. (1) dosage to use in the 5 gallon bucket and (2) what suppliment works best for you. Was thinking about superthrive? (3) What works the best for you on how to direct feed from the spigot?
Thanks

this is what I have, but haven't used.

Valley Industries PK-85400003 Up Stream Chemical Injector-High Pressure, 3500 PSI, 8.0GPM, Brass​

Brand: Valley Industries
 
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