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

<p>Root-knot nematodes (<italic>Meloidogyne</italic> spp.) are a major problem in soil-based glasshouse-grown chrysanthemums. To combat root-knot nematodes in the glasshouse, the soil is typically steamed every 5–6 production cycles. However, this method is expensive, environmentally unfriendly and reduces resistance and resilience of the soil against pathogens and pests. Here, we added biological pesticides/a basic substance and biostimulants both individually and in combination to determine individual or interactive effects against damage by root-knot nematodes in chrysanthemums. We found that the application of biological nematicides derived from garlic extract, the basic substance chitosan HCl and biostimulants comprised of sea minerals and plant oils correlated with reduced root-knot nematode damage. These effects may have been due to direct effects against the nematodes or through indirect effects such as increased resistance and resilience of the plants. Overall, the biostimulants increased the total number of free-living nematodes in the soil, which could lead to a beneficial increase in nutrient cycling in the soils. Our results demonstrate that biological reagents show promise in reducing root-knot nematode damage in glasshouse-grown chrysanthemum and may lead to more resistance and resilient soils.</p>
</abstract>

Root-knot nematodes (Meloidogyne spp.) are a major problem in soil-based glasshouse-grown chrysanthemums. To combat root-knot nematodes in the glasshouse, the soil is typically steamed every 5–6 production cycles. However, this method is expensive, environmentally unfriendly and reduces resistance and resilience of the soil against pathogens and pests. Here, we added biological pesticides/a basic substance and biostimulants both individually and in combination to determine individual or interactive effects against damage by root-knot nematodes in chrysanthemums. We found that the application of biological nematicides derived from garlic extract, the basic substance chitosan HCl and biostimulants comprised of sea minerals and plant oils correlated with reduced root-knot nematode damage. These effects may have been due to direct effects against the nematodes or through indirect effects such as increased resistance and resilience of the plants. Overall, the biostimulants increased the total number of free-living nematodes in the soil, which could lead to a beneficial increase in nutrient cycling in the soils. Our results demonstrate that biological reagents show promise in reducing root-knot nematode damage in glasshouse-grown chrysanthemum and may lead to more resistance and resilient soils.

Biological control of <italic>Meloidogyne</italic> spp. in glasshouse-grown chrysanthemum

Journal of Nematology

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

Biological control of  spp. in glasshouse-grown chrysanthemum

running-head

Root-knot nematodes (Meloidogyne spp.) are a major problem in soil-based glasshouse-grown chrysanthemums. To combat root-knot nematodes in the glasshouse, the...

Biological control of Meloidogyne spp. in glasshouse-grown chrysanthemum

Published Online: Jan 09, 2021

Page range: 1 - 12

DOI: https://doi.org/10.21307/jofnem-2020-125

Keywords
Biological control, Biostimulant, Chrysanthemum, Glasshouse, Host-parasitic relationship, Root-knot nematode, Resistance, Sustainable horticulture

© 2021 J. R. De Long et al., published by Sciendo

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

Biological control of Meloidogyne spp. in glasshouse-grown chrysanthemum

Published Online: Jan 09, 2021

Page range: 1 - 12

DOI: https://doi.org/10.21307/jofnem-2020-125

KeywordsBiological control, Biostimulant, Chrysanthemum, Glasshouse, Host-parasitic relationship, Root-knot nematode, Resistance, Sustainable horticulture

© 2021 J. R. De Long et al., published by Sciendo

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

Keywords
Biological control, Biostimulant, Chrysanthemum, Glasshouse, Host-parasitic relationship, Root-knot nematode, Resistance, Sustainable horticulture