Based on our own trials and data from growers, the IMPORTANCE of wash off after applications is very SIGNIFICANT. It is not just to do with washing product off the caps!!
1. We recommend 1/2 to 1L(max) per m2 wash off; 20-30 minutes after application.
2. We recommend this for all applications, whether mushrooms present or not.
The data shows this is important from a YIELD aspect.
If your GOAL however is for example to REDUCE DISEASE then avoid the wash off.