<abstract xmlns="http://www.w3.org/1999/xhtml">The effects of salicylic acid (SA), <italic>Trichoderma viride</italic> and <italic>Pseudomonas fluorescens</italic> CHA0 were studied on the root-knot nematode <italic>Meloidogyne incognita</italic> race 2 in resistant and susceptible tomato cultivars (Gina VF, Falat CH, Falat 111, Karoon) during 2012-2013. Four-leaf tomato seedlings were used, grown in pots containing 1000 g of sterilized soil; each seedling receiving 20 ml of <italic>T. viride</italic> suspension containing 1×106 spores, 30 ml of <italic>P. fluorescens</italic> CHA0 with 109 cfu/ml, 5mM of salicylic acid and 2000 second stage nematode juveniles. Parameters relevant to nematode population and plant growth were evaluated. The biocontrol agents and salicylic acid were effective in nematode control in combined and single treatments. High reductions in root galling and egg mass indices were observed with combination of SA and biocontrol agents. The greatest increase in plant growth was obtained when cv. Falat CH was treated with SA followed by <italic>P. fluorescens</italic> CHA0 and <italic>T. viride</italic>. The highest number of galls was recorded in cv. Karoon, followed by cvs. Falat 111, Gina VF and Falat CH. <italic>Pseudomonas fluorescens</italic> CHA0 provoked the highest increase in fresh and dry root weight, fresh and dry shoot weight and plant length in all free nematode treatments. The results indicated that chemical inducer (salicylic acid), in combination with biocontrol agents (<italic>T. viride</italic> and <italic>P. fluorescens</italic> CHA0), stimulated and eventually increased plant growth.</abstract>

The effects of salicylic acid (SA), Trichoderma viride and Pseudomonas fluorescens CHA0 were studied on the root-knot nematode Meloidogyne incognita race 2 in resistant and susceptible tomato cultivars (Gina VF, Falat CH, Falat 111, Karoon) during 2012-2013. Four-leaf tomato seedlings were used, grown in pots containing 1000 g of sterilized soil; each seedling receiving 20 ml of T. viride suspension containing 1×106 spores, 30 ml of P. fluorescens CHA0 with 109 cfu/ml, 5mM of salicylic acid and 2000 second stage nematode juveniles. Parameters relevant to nematode population and plant growth were evaluated. The biocontrol agents and salicylic acid were effective in nematode control in combined and single treatments. High reductions in root galling and egg mass indices were observed with combination of SA and biocontrol agents. The greatest increase in plant growth was obtained when cv. Falat CH was treated with SA followed by P. fluorescens CHA0 and T. viride. The highest number of galls was recorded in cv. Karoon, followed by cvs. Falat 111, Gina VF and Falat CH. Pseudomonas fluorescens CHA0 provoked the highest increase in fresh and dry root weight, fresh and dry shoot weight and plant length in all free nematode treatments. The results indicated that chemical inducer (salicylic acid), in combination with biocontrol agents (T. viride and P. fluorescens CHA0), stimulated and eventually increased plant growth.

Effectiveness of salicylic acid, <italic>Pseudomonas fluorescens</italic> CHA0 and <italic>Trichoderma viride</italic> to control <italic>Meloidogyne incognita</italic> race 2 on different tomato cultivars

Department of Plant Protection, Faculty of Agricultural Sciences, University of Guilan, P.O. Box: 41635-1314, Rasht, Iran

Faculty of Agriculture, Shahed University, P.O. Box: 33191-18651, Tehran, Iran

Hellenic Plant Protection Journal

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Effectiveness of salicylic acid,  CHA0 and  to control  race 2 on different tomato cultivars

The effects of salicylic acid (SA), Trichoderma viride and Pseudomonas fluorescens CHA0 were studied on the root-knot nematode Meloidogyne incognita race 2 in...

Effectiveness of salicylic acid, Pseudomonas fluorescens CHA0 and Trichoderma viride to control Meloidogyne incognita race 2 on different tomato cultivars

Published Online: Jan 19, 2016

Page range: 35 - 43

Received: Jun 16, 2015

Accepted: Dec 21, 2015

DOI: https://doi.org/10.1515/hppj-2016-0004

© 2016 L. Esfahani et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.