<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>The nematicidal activity of crudely milled powders of stems, leaves, and bulbs of <italic>Cassia abbreviata</italic>, <italic>Cissus cactiformis</italic>, <italic>Euphorbia ingens</italic>, <italic>Ipomoea kituiensis, Synadenium cupulare</italic>, <italic>Senna petersiana</italic>, <italic>Urigenia sanguinea</italic>, <italic>Maerua angolensis</italic>, and <italic>Tabernaemontana elegans</italic> on eggs and J2 population densities of <italic>Meloidogyne incognita</italic> race 2 on tomato was examined under glasshouse conditions. These plant species have medicinal properties and are being used in South Africa by traditional healers as so-called “muti.” All plant species showed a suppressive effect. Relative to untreated control, the soil amendments consistently suppressed <italic>M. incognita</italic> population densities in tomato roots and the reproductive potential (RP) of the nematode. When compared to fenamiphos, a commercial systemic chemical nematicide, the soil amendments performed comparable or better in suppressing nematode populations in the root systems in 2008 and 2009, but fenamiphos performed better than all soil amendments in 2011. The RP of <italic>M. incognita</italic> was comparable for both soil amendment- and fenamiphos-treated plants. No consistent trend in the effect of the soil amendments on plant root and shoot bioweight was observed, except when plants were treated with <italic>T. elegans</italic>-based soil amendments and both root and shoot bioweight were consistently higher compared with untreated control plants. Our results show that the plant species examined are potential sources of phytonematicides effective against <italic>M. incognita</italic> race 2.</p>
</abstract>

The nematicidal activity of crudely milled powders of stems, leaves, and bulbs of Cassia abbreviata, Cissus cactiformis, Euphorbia ingens, Ipomoea kituiensis, Synadenium cupulare, Senna petersiana, Urigenia sanguinea, Maerua angolensis, and Tabernaemontana elegans on eggs and J2 population densities of Meloidogyne incognita race 2 on tomato was examined under glasshouse conditions. These plant species have medicinal properties and are being used in South Africa by traditional healers as so-called “muti.” All plant species showed a suppressive effect. Relative to untreated control, the soil amendments consistently suppressed M. incognita population densities in tomato roots and the reproductive potential (RP) of the nematode. When compared to fenamiphos, a commercial systemic chemical nematicide, the soil amendments performed comparable or better in suppressing nematode populations in the root systems in 2008 and 2009, but fenamiphos performed better than all soil amendments in 2011. The RP of M. incognita was comparable for both soil amendment- and fenamiphos-treated plants. No consistent trend in the effect of the soil amendments on plant root and shoot bioweight was observed, except when plants were treated with T. elegans-based soil amendments and both root and shoot bioweight were consistently higher compared with untreated control plants. Our results show that the plant species examined are potential sources of phytonematicides effective against M. incognita race 2.

Examine medicinal plants from South Africa for suppression of <italic>Meloidogyne incognita</italic> under glasshouse conditions

Journal of Nematology

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

Examine medicinal plants from South Africa for suppression of  under glasshouse conditions

running-head

The nematicidal activity of crudely milled powders of stems, leaves, and bulbs of Cassia abbreviata, Cissus cactiformis, Euphorbia ingens, Ipomoea kituiensis,...

Examine medicinal plants from South Africa for suppression of Meloidogyne incognita under glasshouse conditions

Online veröffentlicht: 09. Apr. 2020

Seitenbereich: 1 - 7

Eingereicht: 15. Juni 2019

DOI: https://doi.org/10.21307/jofnem-2020-029

Schlüsselwörter
Phytonematicide, plant growth, reproductive potential, root-knot nematodes, soil amendments

© 2020 Mbokota Candy Khosa et al., published by Sciendo.

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

Examine medicinal plants from South Africa for suppression of Meloidogyne incognita under glasshouse conditions

Online veröffentlicht: 09. Apr. 2020

Seitenbereich: 1 - 7

Eingereicht: 15. Juni 2019

DOI: https://doi.org/10.21307/jofnem-2020-029

SchlüsselwörterPhytonematicide, plant growth, reproductive potential, root-knot nematodes, soil amendments

© 2020 Mbokota Candy Khosa et al., published by Sciendo.

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

Schlüsselwörter
Phytonematicide, plant growth, reproductive potential, root-knot nematodes, soil amendments