The behaviour of mandipropamid on and in plants

摘要

Mandipropamid is a new fungicide developed by Syngenta. It is targeted especially against foliar Oomycetes such as: Phytophthora infestans on potatoes and tomatoes, Plasmopara viticola in grapes and Pseudoperonospora cubensis in cucurbits. Following foliar applications on grapes or potatoes, a significant proportion of the applied active ingredient binds immediately to the wax layer of the plant surface where it is stable for an extended period of time. The stability of the surface deposit results inexcellent and long-lasting activity under glasshouse and field conditions. The adsorption to the wax layer also protects the active ingredient from being washed off by rain as soon as the surface spray deposit has dried. The excellent rainfastness was confirmed in bioassays with P. infestans on potatoes and P. viticola on grapes. A small amount of the applied active ingredient is taken up into the host tissue, contributing to curative disease control as well as providing translaminar activity.