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vol.62 número3CAPACIDAD COMBINATORIA PARA RENDIMIENTO DE GRANO Y CARACTERES DE CALIDAD MALTERA EN CEBADA (Hordeum vulgare L.)EVALUACIÓN DEL RIESGO AMBIENTAL DEL INSECTICIDA CARTAP EN BIOENSAYOS CON TRES INVERTEBRADOS índice de autoresíndice de materiabúsqueda de artículos
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Agricultura Técnica

versión impresa ISSN 0365-2807

Resumen

ABALLAY E., Erwin  y  INSUNZA B., Violeta. Evaluation of plants with nematicidal properties in the control of Xiphinema index on table grapes cv. Thompson Seedless in the central zone of Chile. Agric. Téc. [online]. 2002, vol.62, n.3, pp.357-365. ISSN 0365-2807.  http://dx.doi.org/10.4067/S0365-28072002000300002.

The ectoparasitic nematode Xiphinema index Thorne and Allen is economically important in grapes (Vitis vinifera L.) in Chile, both as a root parasite and as a vector for grapevine fan leaf virus (GFLV). The traditional methods for nematode control are based on chemical nematicides, which are erratic and very questionable for their environment effects. The objective of this research was to evaluate the nematicidal effect of eight antagonistic plant species for controlling Xiphinema index on grapevines cv. Thompson Seedless. The selected plant species were Tagetes patula, Cosmos bipinnatus, Zinnia elegans, Gaillardia picta, Calendula officinalis, Thymus vulgaris, Brassica napus and Lupinus albus. The effect of these plants were compared with three controls: an absolute control without test plants; the nematicide fenamiphos (4 kg a.i. ha-1), and barley (Hordeum vulgare) as a non-nematicidal plan. The nematicidal action of the sampled species was evaluated determining the nematode population densities in 250 cm3 of soil: 1) previous to sowing of cover crops; 2) previous to plant incorporation into the soil; 3) three months after the incorporation. The best results were obtained from growing and incorporating Brassica napus, which significantly reduced X. index populations (P<0.05) in comparison with the chemical control (fenamiphos). The rest of the plant species were not effective in the control of X. index.

Palabras clave : allelopathy; antagonistic plants; cover crops; grapevine fan leaf virus (GFLV); green manures; integrated pest management; nematicidal plants; rape; grape fan leaf virus (GFLV).

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