Popratni učinak insekticida na predatorsku grinju Amblyseius swirskii Athias-Henriot, 1962 u uzgoju paprike

master's thesis

• Title (english): Side effect of insecticides on predatory mite Amblyseius swirskii Athias-Henriot, 1962 in pepper growing
• Author: Lea Damjanović
• Mentor: Renata Bažok (mentor)
• Committee member: Renata Bažok (predsjednik povjerenstva)
• Committee member: Maja Čačija (član povjerenstva)
• Committee member: Sanja Fabek Uher (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Department of Agricultural Zoology); Zagreb
• Defense date and country: 2020-09-21, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

U Republici Hrvatskoj paprika je vrlo zastupljena u proizvodnji povrća, a proizvodi se u zaštićenim prostorima i na otvorenom. Kao štetnici u zaštićenim prostorima ističu se kalifornijski trips, cvjetni štitasti moljac i lisne uši. Navedeni štetnici imaju vrlo brz razvojni ciklus stoga je potrebna učestala primjena insekticida što najčešće dovodi do pojave rezistentnosti. Zbog toga je sve češća praksa ispuštanje prirodnih neprijatelja u zaštićene prostore. No, ukoliko se uz biološku zaštitu primjenjuju i insekticidi, potrebno je poznavati učinke djelatne tvari na ispuštene prirodne neprijatelje. U ovom pokusu testiran je novi insekticid iz skupine 23 pod pretpostavkom da je djelotvoran na lisne uši te da nema negativno djelovanje na predatorsku grinju Amblyseius swirskii. Pokus je proveden u dva plastenika: u plasteniku I ispuštena je predatorska grinja A. swirskii te je tretirano istraživanim insekticidom u punoj i pola doze, dok je u plasteniku II primijenjena samo puna doza (bez grinje). Zbog niske populacije grinje tijekom svih očitavanja nije bilo moguće utvrditi utjecaj insekticida na nju. Budući da lisne uši nisu tipični štetnici koje se suzbija primjenom predatorske grinje nije bilo moguće prosuditi o učinkovitosti grinje. Istraživani insekticid pokazao se visoko učinkovit na lisne uši u obje primijenjene doze.

Abstract (english)

In the Republic of Croatia pepper is a very common vegetable produced in greenhouses and in fields. Western flower thrips, glasshouse whitefly and aphids are most important pests in greenhouses. These pests have a very fast developmental cycle, so frequent application of insecticides is required, which leads to the emergence of resistance. Because of that it is an increasingly common practice to release natural enemies into greenhouses. However, if insecticides are used in addition to biological protection, it is necessary to know the effects of the active substance on released natural enemies. In this experiment, a new insecticide from group 23 was tested under the assumption that it is effective against aphids and that it has no negative effect on the predatory mite Amblyseius swirskii. The experiment was performed in two greenhouses, the predatory mite A. swirskii was released in greenhouse I and was treated with the investigated insecticide in full and half dose, while in greenhouse II only full dose (without mites) was applied. Due to the low population of mites during all readings it was not possible to conclude about the impact of insecticide on mites. Since aphids are not typical pests controlled by the use of predatory mites, it was not possible to estimate the effectiveness of the mite. The investigated insecticide proved to be highly effective against aphids in both applied doses.

• Keywords: paprika; zaštićeni prostori; rezistentnost; prirodni neprijatelji
• Keywords (english): pepper; greenhouse; resistance; natural enemies
• Language: croatian
• URN:NBN: urn:nbn:hr:204:760123
• Study programme: Title: Phytomedicine; Study programme type: university; Study level: graduate; Academic / professional title: magistar/ magistra inženjer/inženjerka fitomedicine (magistar/ magistra inženjer/inženjerka fitomedicine)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2020-10-08 06:18:59