Efficacy of some insecticides in control of mulberry scale Pseudaulacaspis pentagona Targioni-Tozzetti

Abstract

In this paper results of the investigation of chemical control of mulberry scale Pseudaulacaspis pentagona control are presented. Trials were conducted during 1998 and 1999 in peach orchards in Boleč (close to Belgrade) using random block system in four repetition. Efficacy of mixture of mineral oil and parathion, then methydatione, phenoxycarb and imidacloprid insecticides applied in two concentrations was investigated. Mulberry scale was controlled with winter treatment, winter treatment followed by spring and summer treatments and summer treatments only. Winter treatment using mixture of mineral oil and parathione did not obtain satisfactory results. The highest efficasy, over 95%, were shown by insecticide products based on methydathione and fenoxycarb applied during vegetation.

U radu su prikazani rezultati ispitivanja hemijskog suzbijanja dudove štitaste vaši, Pseudaulacaspis pentagona. Ogled je sproveden u 1998. i 1999. godini u zasadu breskve u Boleču (u okolini Beograda) po potpunom slučajnom blok sistemu, u četiri ponavljanja. Ispitivana je efikasnost insekticidnih preparata na bazi mešavine mineralnog ulja i parationa, metidationa fenoksikarba i imidakloprida koji su primenjeni u dve koncentracije. Dudova štitasta vaš suzbijana je samo zimskim prskanjem, zimskim prskanjem nakon koga su nastavljena prolećna i letnja prskanja, i samo prolećnim i letnjim tretiranjima. Za zimsko tretiranje korišćen je insekticid mešavina mineralnog ulja i parationa, a postignuti rezultati nisu bill zadovoljavajući. Najveću efikasnost, preko 95%, ispoljili su preparati na bazi metidationa i fenoksikarba primenjeni u toku vegetacije.