Zinc dithiocarbanate and manganese salt compositions - are fungicides giving greatly improved crop yields

摘要

Compsn. for improving crop yields contains an association of (a) a dithiocarbamate of formula (I): (where R1, R2, R3 = H or alkyl; X - NH3 and n = 0-3) and (b) a manganese salt of an organic or mineral acid. Fungicidal association greatly improves crop yield. The association is formulated in classical compsns. and used to treat fruit trees, vegetables, potatoes etc. e.g., it may be used to control disease due to Peronospora and Phytophthora. When used as a foliar fungicide the concentration of active cpds. is 2-0.0005 wt.% pref. 0.5-0.005-wt.%.