UTJECAJ BIOLOŠKE ZAŠTITE NA PRINOS KRASTAVACA PRI SUZBIJANJU CVJETNOG ŠTITASTOG MOLJCA (TRIALEURODES VAPORARIORUM WESTWOOD)

Autor: Zora Kažimir, Nada Parađiković, Renata Baličević, Slavko Perica, Marija Ravlić
Jazyk: chorvatština
Rok vydání: 2011
Předmět:
Zdroj: Agronomski glasnik : Glasilo Hrvatskog agronomskog društva
Volume 73
Issue 6
ISSN: 1848-8900
0002-1954
Popis: Istraživanje je provedeno u stakleniku u cilju određivanja učinkovitosti bioloških pripravaka u odnosu na kemijske kod suzbijanja Trialeurodes vaporariorum (Westwood) te njihov utjecaj na broj, masu, dužinu i opseg plodova krastavaca. Pokus je proveden tijekom ljetnog i jesenskog vegetacijskog razdoblja, a sastojao se od šest tretmana: Boxer 200 SL (2 ml/2l), Bio-Algeen S-90 (40 ml/2l), Biomit plussz® (40 ml/2l), Agri mix (Agri-50 3 ml/2l +6 ml/2l, naizmjenična primjena), Agri-50 (8 ml/2l) i Agri-50 (6 ml/2l). Svi pripravci primijenjeni su četiri puta tijekom vegetacije. Najbolji učinak pri suzbijanju ličinki T. vaporariorum pokazali su biološki pripravci Biomit plussz® i Bio-Algeen S-90. Agri-50 u svim kombinacijama djelovao je slabije na suzbijanje ličinki u odnosu na kemijski pripravak Bokser 200 SL. S druge strane, u tretmanu gdje je primijenjen Agri-50 u nižoj dozi (6 ml/2l) utvrđeni su najveći broj, masa, dužina i opseg plodova krastavaca u ljetnom uzgoju. U jesenskom uzgoju najbolje djelovanje na krastavce imao je kemijski pripravak Boxer 200 SL i to statistički značajno u odnosu na sve biološke pripravke. Od bioloških pripravaka u jesenskom uzgoju najbolje rezultate na plod krastavaca pokazao je Bio-algeen S-90. Na nizak prinos krastavaca djelovali su i nepovoljni uvjeti uzgoja u jesenskom razdoblju. Iako su svi biološki pripravci pokazali dobar utjecaj na suzbijanje ličinki T. vaporariorum pa i uspješnije od kemijskog sredstva, njihov utjecaj na prinos krastavaca potrebno je dodatno ispitati.
The study was conducted in the greenhouse in order to determine the efficacy of biological preparations in comparison whit chemical preparations in the control of Trialeurodes vaporariorum (Westwood) and their impact on number, yield, length and diameter of cucumbers. The trial was conducted during the summer and autumn growing periods and consisted of six treatments: Boxer 200 SL (2 ml/2l), Bio-Algeen S-90 (40 ml/2l), Biomit plussz® (40 ml/2l), Agri mix (Agri-50 3 ml/2l + 6 ml/2l, alternating application), Agri-50 (8 ml/2l) i Agri-50 (6 ml/2l). All preparations were applied four times during the growing season. Biological preparations Biomit plussz® and Bio-Algeen S-90 showed the best effect in supression of T. vaporariorum nymphs. Agri-50 in all combinations was less efficient in suppression of nymphs compared to the chemical preparation Boxer 200 SL. On the other hand, the number, yield, length and diameter of cucumbers in the summer growing period were highest in the treatment with Agri-50 in a lower dose (6 ml/2l). The chemical preparation Boxer 200 SL showed the best results on cucumber fruits in the autumn growing period which were statistically significant compared to all biological preparations. Among biological preparations in the autumn growing season, Bio-algeen S-90 showed the best results on cucumber fruits. The low yield of cucumbers in the autumn growing period was also affected by unfavorable growth conditions. Although all biological preparations showed a good effect in suppression of T. vaporariorum nymphs, some even more successfully than chemical preparations, their impact on cucumber yield needs further study.
Databáze: OpenAIRE
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