William from Hemphill, Tx writes
Bonide Mancozeb Flowable with Zinc Concentrate is not specifically labeled for use on quince. We would recommend using Fertilome Triple Action with Neem Oil. This product is a fungicide, miticide and insecticide all in one. It is safe for use on edibles and can be used to treat for quince rust. The mixing rate is 1 fl oz per gallon of water, and it can be used every 14 days as needed.
Answer last updated on: 01/04/2017