author(s)
Dileep Kumar, Jitendar Kumar Sharma, Suresh Chand Meena, Hanuman Prasad Parewa and SD Ratnoo

abstract
The incidence of yellow vein mosaic of okra, cultivated in the Transitional Plain of Luni Basin (Zone IIb) of Rajasthan was investigated. During the survey, occurrence of okra yellow vein mosaic was observed in serious proportion, inflicting heavy losses. In Sheoganj region, 15 extensively okra growing villages were surveyed to record the occurrence of yellow vein mosaic disease during summer season of 2017 and 2018. Yellow vein mosaic disease was appeared in all the surveyed areas of Sheoganj regions from initiation of flowering stage to fruiting stage of the crop. The disease was not found up to the vegetative stage (i.e. before flowering stage) of the crop. The yellow vein mosaic incidence was ranging from 10 to 30 percent with an average of 20.53 percent in flowering initiation stage during 2017. While, during 2018 the average percent disease incidence was 20.40, with ranging from 12 to 34 percent. The maximum disease incidence was observed at Arathwara (30 and 34%) during both the year, respectively. However, in fruiting stage, the disease incidence was observed in the range of 17.78 to 64 percent with an average of 32.93 percent during 2017. Whereas, during 2018, the average disease incidence was 36.13 with ranging from 16 and 66 percent. The maximum disease incidence was found in Arathwara (64 and 68%) during both the year 2017 and 2018, respectively.