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- Title
Nematicidal activity of essential oils and organic amendments from Asteraceae against root-knot nematodes.
- Authors
Pérez, M. P.; Navas-Cortés, J. A.; Pascual-Villalobos, M. J.; Castillo, P.
- Abstract
The essential oil of Chrysanthemum coronarium flowerheads showed strong nematicidal activity in vitro and in growth-chamber experiments. Essential oil concentrations of 2, 4, 8 and 16 µ L mL-1 , significantly reduced hatch, J 2 survival (determined by final value and area under curves of cumulative percentage hatch or mortality) and reproduction rate of Meloidogyne artiellia in vitro , with the lowest values occurring at 16 µ L mL-1 . In pot trials with chickpea cv. PV 61, essential oil concentrations of 10–40 µ L per 500 cm3 soil, applied on sterile cotton pellets, also significantly reduced the nematode's reproduction rate. The biological processes of mortality and hatching/reproduction were adequately described by the monomolecular and expanded negative exponential models, respectively. Effectiveness of soil amendment with either flowers, leaves, roots or seeds of C. coronarium , and flowers from several species of Asteraceae (Chrysanthemum segetum , Calendula maritima , Calendula officinalis and Calendula suffruticosa ) at 5 g per 500 cm3 soil was tested for suppression of M. artiellia and growth of chickpea cv. PV 61 under growth-chamber conditions. In these tests, flowers of all five Asteraceae species and various parts of C. coronarium significantly reduced reproduction rates of M. artiellia , by 83·0–95·9%, with the minimum rates occurring in infected chickpea plants amended with flowers of C. officinalis and C. suffruticosa . The in vitro and in planta results suggest that the essential oil of C. coronarium and organic amendments from Asteraceae species may serve as nematicides.
- Subjects
ESSENTIAL oils; CHRYSANTHEMUMS; NEMATOCIDES
- Publication
Plant Pathology, 2003, Vol 52, Issue 3, p395
- ISSN
0032-0862
- Publication type
Article
- DOI
10.1046/j.1365-3059.2003.00859.x