Efficacy of Fluopicolide 6.25 % + Propamocarb Hydrochloride 62.5% SC against cucumber downy mildew disease caused by Pseudoperonospora cubensis

Abstract

The widely distributed and devastating oomycete,
Pseudoperonospora cubensis (Berkeley & Curtis)
Rostovtsev is the causal agent of cucurbit downy mildew,
infecting over 40 host species. The present study was
undertaken to evaluate different doses of Fluopicolide 6.25%
+ Propamocarb Hydrochloride 62.5% SC against downy
mildew of cucumber under field condition in two consecutive
seasons. The pooled data indicates that combination dose
of Fluopicolide 6.25 % + Propamocarb Hydrochloride 62.5%
SC @ 1500 ml/ha provided the best disease control (82.43%)
amongst all the treatments along with increasing the yield
by 39.8%. The combination was not phytotoxic on cucumber
up to the dose of 3000 ml/ha.