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Cultivos Tropicales

versión impresa ISSN 0258-5936versión On-line ISSN 1819-4087

Resumen

ALAYON-LUACES, Paula et al. Imidacloprid injections effectiveness for control of snow scale of citrus trunk. cultrop [online]. 2018, vol.39, n.1, pp.15-20. ISSN 0258-5936.

ABSTRACT The aim of this study was to evaluate the efficiency of injections with Imidacloprid in controlling snow scale of citrus (Unaspis citri Comstock) in sweet orange plants. The test was carried out for two consecutive production cycles, the trees implanted on red yellow podzolic soil were nine years old. The treatments were T0: control; T1: one application of two injections of Imidacloprid in October; T2: two applications of Imidacloprid of two injections of each, the first in October and the second 100 days after; T3: trunk spraying of Chlorpyrifos 48 (0,1 %) in October. The number of live nymphs, males and females insects per cm2 of trunk and efficiency of the applications at 45, 90, 135 and 180 days after application of treatments was evaluated. Treatments injections of Imidacloprid and sprays of Chlorpyrifos affected the snow scale, although the efficiency of those were variable, 45 days after applying the products treatments, differences in the number of insects were detected compared to the control in both crop cycles. Applications of Imidacloprid injections were as effective as spraying of Chlorpyrifos for control of the snow scale

Palabras clave : Citrus sinensis; insect control; insecticide.

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