stem gall ruined seeds last year want resistant dhania variety Rajasthan
3 Answers
RCr 41 is a popular Rajasthan coriander variety that is highly resistant to stem gall and wilt and moderately tolerant to powdery mildew, with large bold seeds and good essential oil content, maturing in about 130 to 140 days. RCr 20 is another option that is moderately tolerant to stem gall and matures earlier. Apart from variety, treat seed with thiram plus carbendazim at about 2 g per kg before sowing, and follow crop rotation since repeated coriander on the same land builds up the disease. Sow during rabi from mid October to mid November at spacing of around 20 cm between rows. Confirm currently notified varieties with your KVK as new releases keep coming.
RCr 41 saved my crop in Kota area, the bold seed also sells better. But do not skip seed treatment, even a tolerant variety gets hit if you sow infected seed in old coriander land.
Rotation helped me more than anything. I stopped putting dhania on the same field every year and the gall problem dropped a lot. Now I alternate with wheat or gram.