There's a Fruit Growers Lab in Chico that will do leaf/petiole and soil analysis for you. It's about $60 each. I think it's worth it because pretty much _everything_ causes red chlorosis in red varieties. So the analysis, as long as your problem is not viral, which is a different, much more...
I had leaf and soil analysis done a couple of weeks ago and I've been staring at these results and the more I look the confuseder I get.
I have pretty severe chlorosis in the leaves that all the photos online suggest magnesium deficiency. So I was expecting low results there. Didn't at all...
Anyone use both versions of Stylet oil and have any opinions on the efficacy?
I have an existing powdery mildew infection I want to eradicate, to the extent possible, and was planning on purchasing the non-organic stuff, but my sulocal supplier only stocks the organic stuff.
The label says...