The following was just released by Pest Control Canada, Government Agency, June 2018 and is a re-evaluation of Mancozeb:
"An evaluation of available scientific information found that foliar application of mancozeb to potatoes meets current standards for the protection of human health and the environment when used according to the conditions of registration which include required amendments to label directions...... All other uses of mancozeb are being cancelled due to unacceptable risks to human health and will be removed from the labels."
My personal note: This is a very harmful, read toxic fungicide! Even in using Mancozeb on potato plants, in our Canadian Province of PEI, Prince Edward Island, (large potato grower) every year over the past five years, there are (HUGE) fish kills because of the runoff into their rivers and streams! Every Year! When some fungicide runoff causes thousands of fish to float to the surface, belly up, that is a bad chemical! There are several, very safe fungicides available. California has Mancozeb listed as a Carcinogenic, with other very critical health warnings and issues as well. Without getting political, in the US now, your EPA has been stripped of almost all regulatory authority. Scary.