TITLE:
CyazypyrTM Selectivity for Three Species of Phytoseiid for Coffee and Other Relevant Agricultural Crops in Brazil
AUTHORS:
Paulo Rebelles Reis, Melissa Alves Toledo, Fábio M. Andrade Silva
KEYWORDS:
Agricultural Acarology; Cyantraniliprole; Coffea arabica; Citrus sinensis; Predaceous Mites
JOURNAL NAME:
Agricultural Sciences,
Vol.5 No.4,
March
20,
2014
ABSTRACT:
Mites belonging to the family Phytoseiidae are
the most important and most widely studied among predatory mites of phytophagous
mites. The phytophagous mites Brevipalpus phoenicis (Geijskes, 1939) (Tenuipalpidae)
and Oligonychus ilicis (McGregor, 1917) (Tetranychidae) on coffee (Coffea spp.), are frequently found in combination
with the predaceous mites Iphiseiodes zuluagai Denmark & Muma, 1972; Euseius alatus DeLeon, 1966 and Amblyseius herbicolus (Chant, 1959) (Acari: Phytoseiidae),
among others. The purpose of this research was to study the effects of the product
CyazypyrTM (cyantraniliprole 100 OD) on these three species of Phytoseiidae,
relevant to coffee, citrus and other agricultural crops in Brazil, following standard
laboratory procedures. Mated female mites were exposed to fresh-dried residues on
a glass surface, with 8 treatments, 5 mites per glass plate and 6 replicates, in
a completely randomized experimental design. Each test lasted eight days, with a
daily count of the surviving females and of eggs laid. CyazypyrTM, in
all tested doses (75, 100, 125, 150, 175 and 200 g a.i./ha), was selective for the
studied species, A. herbicolus, I. zuluagai, and E. alatus.
Overall the treatments resulted in low mortality rates and negligible impact on
the reproduction. Therefore, based on IOBC standards, CyazypyrTMcan
be classified as not harmful (class 1) or slightly harmful (class 2), comparable
to the agrochemical TalentoTM (hexythiazox 500 WP-12 g a.i./ha) equivalent
to a harmless standard of selectivity in the laboratory. CyazypyrTM is
therefore a complement to programs of integrated pest management, to preserve the
populations of predatory mites in crops of coffee and citrus, among others, in Brazil.