Screening and Management of Rice Germplasm against Xanthomonas oryzae pv. oryzae

The present studies on “Management of bacterial leaf blight of paddy (Oryza sativa L.) caused by Xanthomonas oryzae pv. oryzae” were undertaken in order to determine the status of the bacterial leaf blight of paddy in Jammu Division 2015. Maximum disease incidence was recorded in Kulian (45.33 per cent) of Jammu district and minimum in Jagatpur (15.21%) of Kathua district. Overall average disease incidence for all three districts was 33.53 per cent. Sixteen germplasm were screened under field condition against bacterial leaf blight, and no germplasm was found immune or resistant to the disease, four were moderately resistant, whereas eleven were moderately susceptible. However, Jaya was found to be susceptible. Fungicide and antibiotic for disease management revealed that minimum disease severity of 11.33% was recorded in streptomycin followed by copper oxychloride (16.00 % disease severity); second date of transplanting (15th July) and second irrigation schedule (water drained out after tillering stage) was found most effective among all the treatments of disease management with maximum 11.67 numbers of tillers per hill, plant height of 124.67cm, panicle length of 27.43 cm and yield of 41.34 q/ha while the first date of transplanting (5th July) with first irrigation schedule (stagnant water) was least effective treatment with 6.33 tillers per hill and plant height 105.00 cm and panicle length 18.23 cm along with 22.46 q/ha yield.