Pochonia chlamydosporia var. chlamydosporia (Goddard) Zare & W. Gams for the management of lettuce infected with Meloidogyne javanica (Treub, 1885)
| Autor: | Everaldo Antônio Lopes, Leandro Grassi de Freitas, José R. Viggiano |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
lcsh:GE1-350
root-knot nematode Root-knot nematode biology Lactuca sativa Wettable powder lcsh:S Biological pest control Lactuca Nematophagous fungi biology.organism_classification Nematophagous fungus lcsh:Agriculture Chlamydospore Agronomy Seedling Biological control nematophagous fungi Animal Science and Zoology Agronomy and Crop Science lcsh:Environmental sciences Meloidogyne javanica |
| Zdroj: | Chilean Journal of Agricultural Research, Vol 75, Iss 2, Pp 255-258 (2015) LOCUS Repositório Institucional da UFV Universidade Federal de Viçosa (UFV) instacron:UFV Chilean journal of agricultural research v.75 n.2 2015 SciELO Chile CONICYT Chile instacron:CONICYT |
| ISSN: | 0718-5839 |
| DOI: | 10.4067/s0718-58392015000200016 |
| Popis: | The application of the nematophagous fungus Pochonia chlamydosporia var. chlamydosporia (Goddard) Zare & W. Gams during seedling production of vegetable crops can be an efficient approach to control root-knot nematode. The aim of this study was to evaluate the effect of treating seedlings and/or soil with bionematicide (wettable powder formulation) based on chlamydospores from isolate Pc-10 on the Meloidogyne javanica (Treub, 1885) control in lettuce (Lactuca sativa L.). Isolate Pc-10 was diluted in water and applied when watering the seedlings (0, 4.5, 9.0, 13.5, and 18.0 g L -1 ) and/or to the potted soil (5000 chlamydospores g -1 ) used for growing lettuce. The soil in each pot was infested with 3000 M. javanica eggs. The number of M. javanica eggs was reduced in lettuce roots when isolate Pc-10 was applied either to seedlings or soil; there was no interaction between application methods. The decrease in the number of eggs was proportional to the increase of isolate Pc-10 applied to seedlings with maximum reduction of 43.5% at the 18 g L -1 dose. When the fungus was applied to the soil, the number of eggs was reduced by 12.3%. Increasing doses of isolate Pc-10 reduced the number of galls up to 21% with the 18 g L -1 dose. Applying bionematicide based on P. chlamydosporia isolate Pc-10 at 18 g L -1 on seedlings controls M. javanica in lettuce. |
| Databáze: | OpenAIRE |
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