20.500.12556/RUL-134802 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 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. fusarium head blight F. graminearum nozzles DON yield grain quality spraying pressure varstvo rastlin škropljenje tlak pršenja Fusarium graminearum ozimna pšenica pridelek šobe kakovost pridelka true false true Angleški jezik Slovenski jezik Članek v reviji 2022-02-02 10:40:01 2022-02-02 10:40:02 2022-09-14 04:10:00 0000-00-00 00:00:00 2021 0 0 17 str. iss. 1, art. 43 Vol. 11 2021 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 631 2073-4395 10.3390/agronomy11010043 44635395 RAZ_Vucajnk_Filip_2021.pdf RAZ_Vucajnk_Filip_2021.pdf 1 E9A9C0C718C4B436D5EC7F1C7E9FDA0F 759bd11bb2bcc167ad78694b66397c002c66372428f000580c4bc474ca60d788 5b35a96b-840c-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=153456 https://www.mdpi.com/2073-4395/11/1/43 0 0c4cf881-840c-11ec-abdb-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=153455 Biotehniška fakulteta 0 0 0