Archives of Phytopathology and Plant Protection (2011) 44, 1467-1482

N. Seenivasan (2011)
Efficacy of Pseudomonas fluorescens and Paecilomyces lilacinus against Meloidogyne graminicola infecting rice under system of rice intensification
Archives of Phytopathology and Plant Protection 44 (15), 1467-1482
Abstract: The talc-based formulations of the plant growth promoting rhizobacterium, Pseudomonas fluorescens and egg parasitic fungi, Paecilomyces lilacinus, were evaluated as seed treatment, soil application and combination of both for the management of M. graminicola in fields of rice grown under system of rice intensification. Both the bioformulations significantly reduced the root invasion and soil populations of M. graminicola but P. fluorescens was most effective when applied as seed cum soil application and seed treatment alone. Effect of these treatments was comparable with the standard chemical carbofuran application. The introduced P. fluorescens survived significantly in rice roots when applied as seed cum soil application and seed application alone than as soil application. There was significant increase in phenol, peroxidase and chitinase accumulation in plants treated with P. fluorescens. Application of bioagents had positive influence on growth parameters such as plant height, root length, shoot weight, root weight and number of tillers per hill. Application of P. fluorescens as seed cum soil treatment resulted in higher grain yield, which was 20.6%-26.9% increase over control followed by P. fluorescens as seed treatment alone that increased grain yield of rice by 10.7%-11.2% than control. However, economic returns per investment was higher when P. fluorescens was applied as seed treatment alone (1:8.8-1:12.0 incremental cost benefit ratio) followed by the P. fluorescens as seed cum soil treatment (1:6.2-1:9.7 incremental cost benefit ratio).
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Link to article at publishers website

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
evaluation - screening - selection

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Meloidogyne graminicola	Rice (Oryza)
Pseudomonas fluorescens (antagonist)	Meloidogyne graminicola	Rice (Oryza)
Purpureocillium lilacinum (pathogen of nematodes)	Meloidogyne graminicola	Rice (Oryza)