Primerjava nanosa fungicida na klas ozimne pšenice (Triticum aestivum L.) z različnimi šobami

Gantar, Gašper (author), Vučajnk, Filip (mentor)

Maja 2015 smo na Laboratorijskem polju Biotehniške fakultete izvedli poljski poskus, v katerem smo s traktorsko škropilnico nanesli fungicid Prosaro (a.s. protiokonazol + tebukonazol) na sprednjo in zadnjo stran klasa ozimne pšenice. Uporabili smo štiri različne šobe. Šoba AI je šoba z dvojnim asimetričnim curkom in zmanjšanim zanašanjem, šoba AVI je tudi z dvojnim a simetričnim curkom in zmanjšanim zanašanjem, šoba TTJ je z dvojnim simetričnim curek, medtem ko je šoba TR standardna vrtinčna šoba. Največji odstotek pokritosti na sprednji in zadnji strani klasa je bil dosežen pri šobi AVI. Na zadnji strani klasa je bila pri večini šob slabša pokritost kot na sprednji strani klasa. Pri šobi TTJ je bil na zadnji strani klasa najmanjši odstotek pokritosti. Pri šobah TR in TTJ je bilo predvsem na sprednji strani klasa izrazito večje število odtisov kapljic na cm2 kot pri šobah AI in TTJ, medtem ko so bile na zadnji strani klasa razlike manjše. Kot je bilo pričakovano, je bila pri šobah z zmanjšanim zanašanjem AI in AVI povprečna površina odtisa kapljice na sprednji strani klasa večja, kot pri šobah TR in TTJ. Na zadnji strani klasa je bila površina odtisa kapljice pri šobi AVI večja kot pri ostalih šobah. Rezultati kažejo, da tudi nekatere najnovejše izvedbe šob (AI) ne zagotavljajo dobrega nanosa na klas ozimne pšenice.

• Language: Slovenian
• Keywords: kmetijski stroji/škropilnice/škropljenje/fungicidi/kakovost nanosa/šobe/ozimna pšenica
• Work type: Bachelor thesis/paper
• Organization: BF - Biotechnical Faculty
• Year: 2018
• PID: 20.500.12556/RUL-100053
• Publication date in RUL: 01.03.2018

GANTAR, Gašper, 2018, Primerjava nanosa fungicida na klas ozimne pšenice (Triticum aestivum L.) z različnimi šobami [online]. Bachelor’s thesis. [Accessed 8 March 2025]. Retrieved from: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=eng&id=100053

Secondary language

• Language: English
• Title: COMPARISON OF FUNGICIDE DEPOSIT ON WINTER WHEAT (Triticum aestivum L.) HEAD USING DIFFERENT NOZZLES

Abstract

In May 2015, a field trial was performed on the lab field of the Biotechnical Faculty, University of Ljubljana, Slovenia. A tractor-mounted sprayer was used to deposit fungicide Prosaro (active ingredients: protioconazole + tebuconazole) on the front and rear head sides of winter wheat. Four different nozzles were used in the trial: the AI nozzle – an asymmetric double flat fan anti-drift nozzle, the AVI nozzle – a symmetric double flat fan anti-drift nozzle, the TTJ nozzle – a symmetric double flat fan nozzle, and the TR nozzle – a standard hollow cone nozzle. The best coverage value on the front and rear head sides was reached with the AVI nozzle. In comparison with the front head side, the use of almost all the nozzles resulted in poorer coverage of the rear head side. The smallest coverage value on the rear head side was reached with the TTJ nozzle. In comparison with the AI and TTJ nozzles, the use of the TR and TTJ nozzles resulted in a significantly higher droplet impression number per cm2, especially on the front head side, while differences on the rear head side were smaller. As expected, the use of the AI and AVI anti-drift nozzles resulted in larger average droplet impression areas on the front head side than the use of the TR and TTJ nozzles. In comparison with the other nozzles, the use of the AVI nozzle resulted in a better droplet impression area on the rear head side. The results show that some of the newer nozzle types (AI) do not ensure the expected quality of the deposit on the winter wheat head.

• Keywords: agricultural machinery/sprayers/spraying/fungicides/spray deposition/quality/ nozzles/winter wheat