Shadecloth was put on the high tunnel on Tuesday, July 18 after white drupelet symptoms appeared on the raspberries that is associated with solar radiation (UV light) - see http://ipm.ucanr.edu/PMG/r71800111.html  UC IPM Caneberries White Drupelet. This shadecloth is 50% shade. We looked at PAR (photosynthetically  active radiation) both inside and outside the tunnel both … [Read more...] about Shade cloth was put on the high tunnel July 18