Development of a Bionematicide With <I>Paecilomyces lilacinus</I> to Control <I>Meloidogyne incognita</I>

Two experiments were conducted in the greenhouse to determine the effect of the fungus Paecilomyces lilacinus in controlling the larvae and root knot or root gall formation of Meloidogyne incognita in tomato cultivar Floradel. The plants were inoculated with the fungus alone, the nematode alone or both simultaneously at different time intervals and combinations. Observations made 60 days after the inoculations showed that the fungus controlled the nematodes and reduced root knot formation. In the first experiment, significantly fewer larvae were found in roots and soil of plants inoculated with the fungus 3 days previous to nematode inoculation. A higher root knot index in plants inoculated with nematodes alone; with fungus and nematodes simultaneously; and with the fungus alone 3 days after nematode inoculation was also obtained. In the second experiment, a tendency for a reduced number of nematodes in soil and roots and low gall indices was observed as the time of inoculation of the fungus before the nematode inoculation was increased. Plants inoculated with the fungus 4 and 6 days before nematode inoculation had significantly lower gall indices than the other plants inoculated with the nematode, the fungus, or both.

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PERFORMANCE OF ARTHROBOTRYS SPP., ALONE AND IN COMBINATION WITH PAECILOMYCES LILACINUS, AS BIOCONTROLLERS OF MELOIDOGYNE INCOGNITA IN TOMATO

The Journal of Agriculture of the University of Puerto Rico ◽

10.46429/jaupr.v73i3.6467 ◽

1969 ◽

Vol 73 (3) ◽

pp. 281-284

Author(s):

Luis A. Sánchez ◽

Nelia Acosta ◽

Nydia Vicente

Keyword(s):

Meloidogyne Incognita ◽

Paecilomyces Lilacinus

PERFORMANCE OF ARTHROBOTRYS SPP., ALONE AND IN COMBINATION WITH PAECILOMYCES LILACINUS, AS BIOCONTROLLERS OF MELOIDOGYNE INCOGNITA IN TOMATO

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Evaluation of Efficacy of Paecilomyces Lilacinus as Biological Control Agent of Meloidogyne Incognita Attacking Tomato

Journal of Plant Protection Research ◽

10.2478/v10045-009-0053-x ◽

2009 ◽

Vol 49 (4) ◽

pp. 337-340 ◽

Cited By ~ 17

Author(s):

Elvira Oclarit ◽

Christian Cumagun

Keyword(s):

Biological Control ◽

Meloidogyne Incognita ◽

Biological Control Agent ◽

Control Agent ◽

Paecilomyces Lilacinus ◽

Egg Mass ◽

Root Weight ◽

Egg Masses ◽

Root Sample ◽

Gall Index

Evaluation of Efficacy of Paecilomyces Lilacinus as Biological Control Agent of Meloidogyne Incognita Attacking Tomato The efficacy of Paecilomyces lilacinus strain UP1 as biological control agent of Meloidogyne incognita attacking tomato was evaluated under screenhouse condition pot experiments. P. lilacinus was formulated on rice substrate in powder form. Root weight, gall index rating, number of galls, egg masses and nematodes per one gram root sample were determined and per cent reduction in gall number was computed. Root weight and gall index ratings were significantly higher in untreated plants than those with P. lilacinus and with the commercial fungicide Nemacur. Number of galls, nematodes and egg masses per one gram root sample were significantly reduced by the application of P. lilacinus at all levels and this was comparable with Nemacur. However, egg mass count in plants treated with the lowest concentration of the biocontrol agent was not significantly different from the uninoculated control. Per cent reduction in gall number was the highest at treatment with 7.92 × 106 spores per ml of P. lilacinus.

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