Vol. 7, Issue 2 (2019)
Epidemiological studies to critical environmental parameters favouring infection and development of disease
Author(s): OP Bharti, RK Pandya, Reeti Singh, Pramod Kumar Gupta, JC Gupta and RC Jatav
Abstract: An experiment was laid out on epidemiological studies of stem rot of mustard predicting of infection and progressive development of the disease during 2014-15 and 2015-16 at experimental field, Department of Plant Pathology, RVSKVV, Gwalior (Madhya Pradesh). The meteorological parameters data was collected at weekly interval during crop season of both years from the Meteorological Department, College of Agriculture Gwalior. The data revealed that stem rot infection is negatively and significantly influenced by maximum temperature (r= -0.697*) and sunshine hrs (r= -0.855**), while, the maximum relative humidity (r= 0.883**) and minimum relative humidity (r= 0.871**) showed highly significant and positive correlation with the Sclerotinia sclerotiorum infection. Further, for predicting the impact of the individual meteorological parameters a regression study was carried out. Further, The regression equation Y=-40.518+0.475 X3 indicates that average maximum in relative humidity should be at least 85.3% and thereafter, with 1% increase in relative humidity the stem rot infection (girdle length) may increase by 0.47 cm. Similarly, the disease (girdle length) increases by 0.06 cm per unit in minimum relative humidity for the infection of stem rot of mustard. The relative humidity and rainfall emerge as major factors to successful establishment of disease infection (girdle length). Thereafter, plants goes to collapse and unable to produce poding formation. This study concluded that the data would be helpful for the predictions of stem rot infect and it’s management.
Pages: 2201-2204 | 501 Views 101 Downloads
download (5908KB)
How to cite this article:
OP Bharti, RK Pandya, Reeti Singh, Pramod Kumar Gupta, JC Gupta, RC Jatav. Epidemiological studies to critical environmental parameters favouring infection and development of disease. Int J Chem Stud 2019;7(2):2201-2204.
