Interactive effect of root-knot nematode, Meloidogyne incognita and root-rot fungus, Rhizoctonia solani, on okra [Abelmoschus esculentus L.]

Author：   Shahab Sheila  

Publisher： Taylor & Francis Ltd

ISSN： 0323-5408

Source： Archives of Phytopathology and Plant Protection, Vol.45, Iss.6, 2012-04, pp. : 660-666

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Abstract

The individual, concomitant and sequential inoculation of second stage juveniles (at 2000 J2/kg soil) of Meloidogyne incognita and Rhizoctonia solani (at 2 g mycelial mat/kg soil) showed significant reduction in plant growth parameters viz. plant length, fresh weight and dry weight as compared to control. The greatest reduction in plant growth parameters was recorded in the plants simultaneously inoculated with M. incognita and R. solani followed by sequential and individual inoculation. In sequential inoculation, plant inoculated with M. incognita 15 days prior to R. solani shows more reduction in comparison to plant inoculated with R. solani 15 days prior to M. incognita. Moreover, the multiplication of nematode and number of galls/root system were significantly reduced in concomitant and sequential inoculation as compared to individual inoculation, whereas the intensity of root-rot/root system caused by R. solani was increased in the presence of root-knot nematode M. incognita as compared to when R. solani was inoculated individually.

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