In no till to my knowledge so far the only thing you can burn your plants with is the Silica and I have yet to even find the point that the Silica harms my plants and really don't see the point in finding out. If the environment is correct with the living soil you're basically the grounds keepper, you maintain the soil and the plant grows itself. Now this is going off of a proper soil to start with. (I'm not saying your soil is bad).
What I am finding is, because I grow different strains, the obvious is plants still have different needs, even different pheno's of the same strains, so it's a game with the top dressing to give the plants what they want/need. But as I am still learning and this run was/is my first no till run I will chuck up any deficiencies in the soil right now to my own error. But I can tell you I have never had such large and healthy plants in my garden as now. And the taste off of my organic buds is crazy compared to the same strain last time in coco.
And I haven't been foliar spraying too much in veg now to slow down the growth rate, when I was full bore with the foliars and on top of the feeding in the beginning I was getting as good or better results than when I did hydro and that really did Amaze me. Whoever says you cannot grow big healthy plants indoors in soil for quality and yield has not done a proper no till grow.