Browsing by Author "Choudhary, S. L."
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ThesisItem Open Access Comparison of antibacterial chemicals and most effective partially purified plant products component against different bacterial pathogens in vitro(MPUAT, Udaipur, 2004) Meena, A. K.; Choudhary, S. L.Plant protection through synthetic chemicals contributed significantly in reducing losses due to disease and thereby increased agricultural production. However, chemicals share to environmental pollutions through air, water, soil and by induction of resistance amongst the pathogens, currently caused wide spread concern and hence the need to look for an alternative safer means for plant disease is felt greater now than ever before. Natural plant product components can replace synthetic chemicals effectively. Four strains of bacterial pathogens viz., Xanthomonas campestris pv. campestris, Xanthomonas axonopodis pv. cyamopsidis, Xanthomonas axonopodis pv. citri and Pseudomonas solanacearum were isolated from cabbage, cluster bean, citrus and potato respectively. Seven partially purified plant product components were screened for their efficacy in inhibiting the growth of the above pathogens by using disc diffusion techniques at 500, 1000 and 2000 ppm concentration. The maximum inhibiting zone was obtained from Mahua flower and Satyanashi components effective only against Pseudomonas strains at 2000 ppm but these were not effective against three Xanthomonas strains.ThesisItem Open Access Management of Fruit Rot of Chilli by Cow Urine, Milk, Butter Milk and Partially Purified Plant Product Component(MPUAT, Udaipur, 2004) Meena, P. N.; Choudhary, S. L.Now a day’s environmental consciousness on the part of scientists and general public has been drawn attention to the increasing amount of pesticides used in crop plants and their deleterious effect on flora and fauna. These resulted in a search for biodegradable products, which can be effective in management of plant diseases without any toxic effect. Natural products preparation can replace synthetic chemicals effectively. From the infected chilli fruits two pathogens viz., Alternaria solani and Fusarium solani were isolated in laboratory. The partially purified component human nails preparation was screened for their efficacy to inhibit the growth of the above pathogens in vitro conditions. The partially purified plant product bitter temru and natural products like as cow urine were tested against chilli fruit rots viz., Alternaria rot and Fusarium rot. The Carbendazim preparation caused reduction in fruit rot by fruit treatment techniques and was at par with human nails preparation, followed by cow urine and bitter temru fruits preparations. The disease incidence was also reduced by cow milk and butter milk in pre and post-inoculated fruits but less than above treatments.