DOWNY MILDEW HELPS A BAD HITCH­HIKER IN LET­TUCE

Agriculture - - Research -

DOWNY MILDEW is usu­ally a let­tuce grower’s worst night­mare; it’s the big­gest prob­lem in let­tuce pro­duc­tion. Mul­ti­ple ap­pli­ca­tions of pro­tec­tants are usu­ally needed to con­trol the fun­gus-like wa­ter mold Bremia lac­tu­cae that causes downy mildew, and it may cost mil­lions of dol­lars more in bad years when it can wipe out en­tire crops re­gard­less of treat­ment.

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