1Department of Plant Pathology, Rajendra Agricultural University, Pusa, Samastipur, Bihar
2Department of Agricultural Biotechnology and Molecular Biology, Rajendra Agricultural University, Pusa, Samastipur, Bihar
3Department of Plant Protection, Sam Higginbottom Institute of Agriculture, Technology and Sciences, (Deemed To Be University), Allahabad, U. P., India
*Email: rahul.tiwari072@gmail.com
Online published on 31 December, 2014.
Brown leaf spot of paddy incited by Helminthosporium oryzae is an economically important disease affecting rice production. The disease is currently managed only by the excessive application of chemical fungicides which are toxic and not environmentally friendly. Bio-pesticides can reduce the use of chemicals. In the present investigation, foliar spray with T. viride (10g/l) proved to be most effective against Helminthosporium oryzae, showing minimum disease severity (23.13%) and producing maximum shoot length (83.13cm), number of tillers (19.33) and yield (44.57q/h) followed by foliar spray with T. viride (8 g/l). Three sprays of T. viride and P. fluorescens were found effective in reducing the disease severity as well as increasing the yield.
Brown spot, Helminthosporium oryzae, Paddy, Pseudomonas fluorescens, Trichoderma viride
