Just checked garden with soil tester. Both potash and phosphate read high. How much and type of harm can this can do to a vegetable garden? A good way to lower both ? ? ? How important is it to do ? Tnx.
Which garden tester? What water did you use? What else did you test to prove your test worked and reads true? K leaches almost as fast as N in some soils. What kind of soil do you have? Is it amended with anything particular? Here is some detail on phosphorus. What is your pH?