Bhartiya Krishi Anusandhan Patrika, volume 35 issue 1-2 (march-june 2020) : 33-38

In-vitro evaluation of six bio-product against coriander stem gall disease

Munish Leharwan, Meenu Gupta, Sanjeev Leharwan
1<div style="text-align: justify;">Department of Plant Pathology, Yashwant Singh Parmar University of Horticulture and Forestry,&nbsp;Nauni-173 230, Solan, Himachal Pradesh.</div>
  • Submitted22-05-2020|

  • Accepted18-07-2020|

  • First Online 10-09-2020|

  • doi 10.18805/BKAP199

Cite article:- Leharwan Munish, Gupta Meenu, Leharwan Sanjeev (2020). In-vitro evaluation of six bio-product against coriander stem gall disease. Bhartiya Krishi Anusandhan Patrika. 35(1): 33-38. doi: 10.18805/BKAP199.
Stem gall of coriander caused by Protomyces macrosporus Unger. is a highly devastating seed and soil borne pathogen in coriander and has emerged as one of the major disease causing substantial quantitative and qualitative losses. In the present studies, efficacy of six bio-products, namely, Neemazal, cow urine, butter milk, fresh milk, beejamrit and jeevamrit was screened against mycelial growth inhibition of P. macrosporus under in vitro conditions. Extracts of these bio-products were evaluated at three different concentrations (i.e 10, 20 and 30%) by poison food technique. Results revealed that that among the various bio-products evaluated against test pathogen, irrespective of concentration tested, all the bio-products resulted in significant inhibition in mycelial growth of test pathogen with neemazal giving the complete inhibition [100.00 % (90.00)] followed by fresh milk [30.66 % (28.44)] and butter milk [26.55 % (25.99)], though these treatments were statistically different from one another. Different concentrations (10 to 30 %) of bio-products, irrespective of the treatments showed that 30 per cent concentration of all bio-products was most efficacious in inhibiting the mycelial growth of the test pathogen giving 69.95 per cent (36.77) growth inhibition. This was followed 20 and 10 per cent concentration of bio-products resulting in 55.58 per cent (32.49) and 45.53 per cent (16.30) growth inhibition, respectively. The result regarding evaluation of bio-products under in vitro conditions against the P. macrosporus showed that Neemazal treatment was most effective at all concentrations and completely inhibited the test fungus followed by 30 per cent fresh milk resulting in the mycelial growth inhibition of 51.60 per cent.
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