The present invention relates to methods for controlling or preventing infestation of soybean by phytopathogenic microorganisms, in particular of the fusarium genus, sclerotinia sclerotiorum, microsphaera diffusa, septoria glycines and cercospora sojina, more particularly fusarium virguliforme, fusarium solani, fusarium oxysporum, fusarium acuminatum, fusarium chlamydosporum, fusarium compactum, fusarium culmorum, fusarium equiseti, fusarium graminearum, fusarium merismoides, fusarium proliferatum, fusarium pseudograminearum, fusarium semitectum, fusarium subglutinans and fusarium verticilliodes, comprising applying to a crop of plants, the locus thereof, or propagation material thereof, a compound according to formula (I), wherein R1, R2, R3, R4, R5, Y, A, B are as defined herein.
