Potato – Target Spot (early Blight)

Resistance management strategy for:

Guidelines

1. Limit the use of Group 2, 3, 7, 9 or 11 fungicides to periods when conditions favour disease development, apply these fungicides preventatively before disease symptoms are visible.
2. Do not apply more than six Group 2 or 3 sprays in one season. Apply no more than two consecutive sprays of a Group 2 or 3
3. If used solo, apply Group 7 fungicides in strict alternation with fungicides from a different cross resistance group. If fungicides containing Group 7 are used in mixture, apply a maximum of 2 consecutive applications. If a Group 7 seed treatment or in-furrow treatment has been used, the first foliar fungicide application should not contain a Group 7.
4. Apply no more than two consecutive sprays containing a Group 9
5. Do not apply more than two consecutive Group 11 sprays per crop. If consecutive applications of Group 11 containing fungicides are used, then they must be followed by at least the same number of applications of fungicide(s) from a different group(s) before a Group 11 containing fungicide is used again, either in the current or following season. When using a Group 11 fungicide in-furrow at planting, use a fungicide from a different group as the first foliar spray.