Manufacturers of BOTRY-Zen have advised changed application rates for their product. BOTRY-Zen is BioGro certified and holds a Limited Claim for Psa control. BOTRY-Zen may be applied from bud break to fruit set and post-harvest to bud break at the changed rate of 600g/100L. Rates quoted are for high volume spraying to run-off. Please click here to refer to KVH Recommended Product list.