Vpliv tehničnih parametrov škropljenja na pokritost klasov s škropilno brozgo pri ozimni pšenici (Triticum aestivum)

Bojc, Jurij (author), Vučajnk, Filip (mentor)

V letu 2024 smo na laboratorijskem polju Biotehniške fakultete izvedli 4 poljske poskuse, v katerih smo primerjali različne tehnične parametre škropljenja in ugotavljali pokritost klasov ozimne pšenice v času cvetenja. Vozna hitrost 6 km/h in tlak škropljenja 3 bar sta bila konstantna za vse poskuse. Za ugotavljanje odstotka pokritosti klasov sprednje in zadnje strani smo uporabili na vodo občutljive lističe. Odtise kapljic smo pomerili z merilno napravo Wise Node in podatke statistično obdelali. V prvem poskusu smo ugotovili, da se s povečanjem volumskega pretoka šobe oz. porabe vode povečuje povprečna pokritost tako sprednje kot tudi zadnje strani klasa pri uporabi odbojnih šob TFJ in njihovi izmenični postavitvi. Pri uporabi injektorske šobe z asimetričnim curkom Idta 04 (10° naprej in 50° nazaj) je bila dosežena boljša pokritost klasa kot pri uporabi odbojne šobe TFJ 04. Glede na višino škropljenja z odbojno šobo TFJ 04 smo ugotovili boljšo povprečno pokritost klasa pri nizki višini škropljenja 10 cm. Pri zadnjem poskusu z različnimi koti nosilcev odbojnih šob TTI 02 se je izkazalo, da je kot 45° najmanj optimalen za dobro povprečno pokritost klasa glede na kote 0°, 15° in 30°. Pri večini poskusov je bila ugotovljena manjša povprečna pokritost na zadnji strani klasa.

• Language: Slovenian
• Keywords: odbojne šobe, injektorske šobe, odstotek pokritosti, ozimna pšenica, klas
• Work type: Master's thesis/paper
• Organization: BF - Biotechnical Faculty
• Year: 2025
• PID: 20.500.12556/RUL-177612
• Publication date in RUL: 26.12.2025

Secondary language

• Language: English
• Title: The influence of technical parameters on the head deposit of winter wheat (Triticum aestivum)

Abstract

In 2024, we conducted a field experiment at the Laboratory Field of the Biotechnical Faculty, in which we compared different technical spraying parameters in 4 experiments and determined the coverage of the winter wheat ear during flowering. The driving speed of 6 km/h and the spraying pressure of 3 bar were constant for all experiments. Water-sensitive papers were used to determine the degree of coverage of the front and rear side wheat head. Droplet imprints were measured with the Wise Node measuring device and the data were statistically processed. In the first experiment, we found that increasing the nozzle volume flow rate or water consumption increases the mean coverage of both the front and rear sides of the wheat head when using TFJ deflector nozzles and their alternating arrangement. When using the Idta 04 asymmetric jet injector nozzle (10° forward and 50° backward), better mean head coverage was achieved than when using the TFJ 04 deflector nozzle. Regarding the spray height with the TFJ 04 deflector nozzle, we found better wheat mean head coverage at a low spray level of 10 cm. In the last experiment with different angles of the TTI 02 deflector nozzle holders, it was shown that the 45° angle was the least optimal angle for good mean head coverage compared to the angles of 0°, 15°and 30°. In most experiments, lower mean coverage was found at the back of the wheat head.

• Keywords: reflective nozzles, injector nozzles, percentage coverage, winter wheat, wheat head