The influence of the spraying pressure of an injector asymmetric double nozzle with variable flow on head fungicide coverage, yield, grain quality, and deoxynivalenol content in winter wheat
ID Vučajnk, Filip (Author), ID Trdan, Stanislav (Author), ID Košir, Iztok Jože (Author), ID Ocvirk, Miha (Author), ID Šantić, Mihovil (Author), ID Žerjav, Metka (Author), ID Šantavec, Igor (Author), ID Bernik, Rajko (Author), ID Vidrih, Matej (Author)

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Spraying parameters are important factors when spraying wheat heads against fusarium head blight (FHB) to control the deoxynivalenol level in the grain and to obtain high and quality yields. In 2019 and 2020, field trials were conducted in order to establish the effect of the spraying pressure (2 bar, 4 bar, and 6 bar) of special nozzles with a variable flow rate Agrotop VR 1.5 on the head fungicide coverage, yield parameters, and the deoxynivalenol (DON) value in the grain. The coverage of the front and rear sides of wheat heads increased with the increase of spraying pressure from 2 to 6 bar. In 2019, when the infection with FHB was more severe, no significant differences appeared in the yield and the hectoliter weight at a lower spraying pressure, while the DON value at this pressure approached the maximum permissible level. In that year, the DON value exponentially fell with the increase of spraying pressure. In 2019, the thousand grain weight was higher at the spraying pressure of 6 bar than at the pressures of 2 and 4 bar. The results show that also a lower spraying pressure (2 bar) and a volume application rate (117 L/ha) below the recommended one suffice to retain the DON value in the grain below the maximum permissible level, even in years with more severe infection.

Keywords:fusarium head blight, F. graminearum, nozzles, DON, yield, grain quality, spraying pressure
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:BF - Biotechnical Faculty
Publication status in journal:Published
Article version:Publisher's version of article
Number of pages:17 str.
Numbering:Vol. 11, iss. 1, art. 43
PID:20.500.12556/RUL-134802 This link opens in a new window
ISSN on article:2073-4395
DOI:10.3390/agronomy11010043 This link opens in a new window
COBISS.SI-ID:44635395 This link opens in a new window
Publication date in RUL:02.02.2022
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Shortened title:Agronomy
COBISS.SI-ID:522953241 This link opens in a new window


License:CC BY 4.0, Creative Commons Attribution 4.0 International
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:01.01.2021

Secondary language

Keywords:varstvo rastlin, škropljenje, tlak pršenja, Fusarium graminearum, ozimna pšenica, pridelek, šobe, kakovost pridelka


Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Project number:P4-0092
Name:Zdravje živali, okolje in varna hrana

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