Journal of Biopesticides (2010) 3, 96-99
K. Karthikeyan and Sosamma Jacob (2010)
Pseudomonas fluorescens and Heterorhabditis indica Poinar for the management of major insect pests of rice
Journal of Biopesticides 3 (1 Special Issue), 96-99
Abstract: An investigation was carried out to assess the efficiency of Pseudomonas fluorescens (PGPR) and Heterorhabditis indica Poinar (Entomopathogenic Nematode) against major rice pests. Rice seedling dip plus spraying in the main field @ 15g/litre with P. fluorescens was found to be significantly effective in reducing the incidence of stem borer (Scirpophaga incertulas). Spraying of H.indica @ 3000 IJs /ml was effective in reducing the white ear incidence. The incidence of gall midge (Orseolia oryzae) was significantly reduced with the treatment of P. fluorescens seedling dip plus spray @ 10g/litre. EPN spray @ 2500 IJs /ml was also equally effective in reducing the gall midge incidence at 25 DAT. Case worm (Parapoynx stagnalis) damage was observed to be lowest in plots treated with P. fluorescens seedling dip plus spray @ 15g/litre. Treatment with H. indica indicated a lowest incidence of leaffolder (Cnaphalocrocis medinalis). H. indica applied @ 3000 IJs /ml was the superior treatment at 25 days after transplanting while at the later stage (55 days after transplanting), a lower dose @ 2500 IJs /ml was found to be sufficient to bring about significant control of leaffolder. The incidence of P. stagnalis was significantly lowest with P. flourescens seedling dip plus spray @ 15g/litre. But the treatments showed no significant difference against the incidence of blue beetle (Leptispa pygmaea) and whorl maggot (Hydrellia phillippina).
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Full text of article
Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
evaluation - screening - selection
