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

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 by39.8%. The combination was not phytotoxicon cucumber up to the dose of 3000 ml/ha.