Hello Dr.,

I can't find any tumor or gall like structure by that we can say its due to Argobacterium. multiple shoot and root proliferation may happen due to growth hormone imbalance against environment.

Mahammed Faizan I have been working with Agrobacterium bv1 (crazy roots pathogen) since 2014, and met very diverse simptoms caused by this pathogen on greenhouse vegetables - roots and shoots proliferation, crown galls). But, I have not seen such symptoms on outdoor plants. The second possible reason - Phytoplasma infection. Hormonal disbalance is possible too. All test will be done soon.

Hello dear, This may be the possible cause and prevention of this problem, found while reading an article.

Disease: Clubroot

Causal organism: Plasmodiophora brassicae

Symptoms:

Slow growing, stunted plants; yellowish leaves which wilt during day and rejuvenate in part at night; swollen, distorted roots; extensive gall formation

Cause: Fungus

Comments:

Can be difficult to distinguish from nematode damage; fungus can survive in soil for periods in excess of 10 years; can be spread by movement of contaminated soil and irrigation water to uninfected areas

Management:

Once the pathogen is present in the soil it can survive for many years, elimination of the pathogen is economically unfeasible; rotating crops generally does not provide effective control; plant only certified seed and avoid field grown transplants unless produced in a fumigated bed; applying lime to the soil can reduce fungus sporulation.

Tarkeshwar Kannaujiya Thank you for your answer. I have eliminated clubroot in this plot more than 10 years ago.

It was Phytoplasma. Phytoplasma solani was found last year on corn, barley, and blackberry plants.

It looks like plantbug Lygus pratensis is the main vector for phyloplasma in local area.