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Revista industrial y agrícola de Tucumán

versión On-line ISSN 1851-3018

Resumen

SALAS, Hernán; GOANE, Lucía; CASMUZ, Augusto  y  ZAPATIEL, Sebastián. Control of citrus leafminer Phyllocnistis citrella Stainton in nursery lemon plants with systemic insecticides. Rev. ind. agríc. Tucumán [online]. 2006, vol.83, n.1-2, pp.49-52. ISSN 1851-3018.

Citrus leafminer (CLM) Phyllocnistis citrella Stainton damages citrus leaves by producing galleries during larval stage. Nursery citrus trees and one and two-year-old citrus trees, which flush constantly during spring and summer, are the most affected by CLM. Plant growth is delayed and tree structure changes. To control this insect in citrus nurseries, several foliar sprays insecticides are needed every 10 to 15 days during the growing season. In this paper, CLM control in nursery lemon plants with systemic insecticides imidacloprid and thiametoxam, applied by "drench", is reported. Treatments were imidacloprid at 0.035, 0.105 and 0.175 g a.i. and thiametoxam at 0.025, 0.075 and 0.125 g a.i per plant in a five-liter container. An unsprayed control was included. CLM was effectively controlled from November to March (120 days approximately) with medium and high doses, and from 25 to 45 days with low doses of both insecticides. In one of the trials, imidacloprid and thiametoxam low doses did not control CLM. Considering the obtained results, it would be more appropriate to use imidacloprid 35% SC (0,105 g a. i. per plant) and thiametoxam 25% WG (0,075 g a. i. per plant) for citrus leafminer control in greenhouse plants.

Palabras clave : Citrus pest; Imidacloprid; Thiametoxam; Drench; Chemical control.

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