I had never realized that too much N can cause plants to be more attractive to insects (correct?).
So I'm wondering-- if I've got really good soil (rocky slightly clayey loam) that I've added what it's original soil test said it needed (Magnesium) and to which I added wood ash and lime (started with 5.4 PH) and to which I add manure and compost each year. . . is the addition of fish emulsion overkill?
My subsequent soil test had high P and K, high CEC, great OM. But if you really can't test effectively for N, do you have to blindly keep adding it each year?
I'm thinking of Ruth Stout, who added nothing but the rotting hay she mulched with. (and later, after some scientists got to her, some alfalfa meal) Thinking I might like to be lazy like her. (I also mulch with loads of hay, which rots quickly into the soil.)
My basic question is can I, indeed *should* I, stop fertilizing? And how to know?