Jon,
I agree with you up to a point but also believe in environmental influences such as rainfall and timing of those environmental factors. @alan is saying and I agree with him that pressure is higher in some locations than others. Good soil nutrition is always important but no more important than good strong disease resistant varieties as an example. We must match the right varieties with the right area. A good example is last year I grew kieffer pears spray free Kieffer Pear. I can’t grow all pears spray free because some are more resistant than others. Those problems I have are largely due to my location. There is very little perfect soil admittedly in any location. We all have the same goals to reduce or eliminate sprays and improve soils for better quality food for us to eat.
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