<abstract xmlns="http://www.w3.org/1999/xhtml">A factorial experiment was established in a completely randomized design to verify the effect of different inoculum levels of an Iranian isolate of <italic>Trichoderma longibrachiatum</italic> separately and in combination with various concentrations of cadusafos against <italic>Meloidogyne javanica</italic> in the greenhouse. Zucchini seeds were soaked for 12 hr in five densities (0, 105, 106, 107, and 108 spores/ml suspension) of the fungus prior to planting in pots containing four concentrations of cadusafos (0, 0.5, 1, and 2 mg a.i./kg soil). The data were analyzed using a custom response surface regression model and the response surface curve and contour plots were drawn. Reliability of the model was examined by comparing the result of new experimental treatments with the predicted results. The optimal levels of these two variables also were calculated. The interactive effects of concentrations of <italic>Trichoderma</italic> and cadusafos were insignificant for several responses such as the total number of eggs per gram soil, the number of intact eggs per gram soil, nematode reproduction factor, and control percent. Closeness of experimental mean values with the expected values proved the validity of the model. The optimal levels of the cadusafos concentration and <italic>Trichoderma</italic> concentration that caused the best plant growth and lowest nematode reproduction were 1.7 mg a.i./kg soil and 108 conidia/ml suspension, respectively.</abstract>

A factorial experiment was established in a completely randomized design to verify the effect of different inoculum levels of an Iranian isolate of Trichoderma longibrachiatum separately and in combination with various concentrations of cadusafos against Meloidogyne javanica in the greenhouse. Zucchini seeds were soaked for 12 hr in five densities (0, 105, 106, 107, and 108 spores/ml suspension) of the fungus prior to planting in pots containing four concentrations of cadusafos (0, 0.5, 1, and 2 mg a.i./kg soil). The data were analyzed using a custom response surface regression model and the response surface curve and contour plots were drawn. Reliability of the model was examined by comparing the result of new experimental treatments with the predicted results. The optimal levels of these two variables also were calculated. The interactive effects of concentrations of Trichoderma and cadusafos were insignificant for several responses such as the total number of eggs per gram soil, the number of intact eggs per gram soil, nematode reproduction factor, and control percent. Closeness of experimental mean values with the expected values proved the validity of the model. The optimal levels of the cadusafos concentration and Trichoderma concentration that caused the best plant growth and lowest nematode reproduction were 1.7 mg a.i./kg soil and 108 conidia/ml suspension, respectively.

Optimum Concentrations of <italic>Trichoderma longibrachiatum</italic> and Cadusafos for Controlling <italic>Meloidogyne javanica</italic> on Zucchini Plants

Journal of Nematology

This work is licensed under the Creative Commons Attribution 4.0 International License.

Optimum Concentrations of  and Cadusafos for Controlling  on Zucchini Plants

A factorial experiment was established in a completely randomized design to verify the effect of different inoculum levels of an Iranian isolate of Trichoderma...

Optimum Concentrations of Trichoderma longibrachiatum and Cadusafos for Controlling Meloidogyne javanica on Zucchini Plants

Published Online: Jul 21, 2017

Page range: 54 - 63

Received: Oct 08, 2015

DOI: https://doi.org/10.21307/jofnem-2017-009

Keywords
biological control, cadusafos, Javanese root-knot nematode, management, nematicide, nematophagous fungi

© 2016 Zahra Sokhandani et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Optimum Concentrations of Trichoderma longibrachiatum and Cadusafos for Controlling Meloidogyne javanica on Zucchini Plants

Published Online: Jul 21, 2017

Page range: 54 - 63

Received: Oct 08, 2015

DOI: https://doi.org/10.21307/jofnem-2017-009

Keywordsbiological control, cadusafos, Javanese root-knot nematode, management, nematicide, nematophagous fungi

© 2016 Zahra Sokhandani et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Keywords
biological control, cadusafos, Javanese root-knot nematode, management, nematicide, nematophagous fungi