Fungicides against diseases of lawn grass leaves

  • S. Retman Institute of Plant Protection NAAS, 33, Vasilkivska str., Kyiv, 03022, Ukraine
  • O. Nychyporuk Institute of Water Problems and Melioration NAAS, 03022, Kyiv, 37, Vasilkivska str., Ukraine
  • О. Shevchuk Institute of Plant Protection NAAS, 33, Vasilkivska str., Kyiv, 03022, Ukraine
Keywords: turfgrass, phytopathogens, fungicides, efficiency, projective coating

Abstract

Goal. To evaluate the effectiveness of the use of fungicides of various chemical groups against the leaf diseases turfgrass.

Methods. The research was carried out in 2015—2017 on the lawn mixture «Universal» in the zone of the Polissya of Ukraine. The effect of fungicides of various chemical groups was investigated (Impact T, SC; Bumper Super, EC; Amistar Extra 280 SC, SC; Alto Super 300 EC, EC; Maxim 025 FS, FS; Horus 75 WG, WG). Fungicides were applied twice. The first spraying was carried out when development of diseases in control plot reached 3—5%, the second — in 30 days. The assessments were performed according to generally accepted methods, disease spread, disease severity and technical efficiency of pesticides were determined.

Results. During the period of research, the most common leaf diseases of turfgrass, which eveloped annually and had a significant severity during the growing season, were powdery mildew and septoria leaf blotch. After two-time spraying, the technical efficiency of fungicides against powdery mildew reached 82.2—92.2%, against septoria leaf blotch up to 80.2%. The most effective against powdery mildew was the use of Alto Super 330 EC, EC (0.5 l / ha), Amistar Extra 280 SC, SC (0.75 l / ha) and tank mixture of Maxim 025 FS, FS (0.75 l / ha and 1.0 l / ha) with Horus 75 WG, VH (0.6 kg / ha). Against the septoria leaf blotch, the highest efficiency was shown by Alto Super 330 EC, EC (0.5 l / ha), Bumper Super, EC (0.8 l / ha) and Maxim 025 FS, FS (1.0 l / ha) + Horus 75 WG, WG (0.6 kg / ha). In addition, due to the reduction of disease severity, a positive effect of fungicides on the quality of the lawn was achieved and the projective coating increased to 92—93%.

Conclusion. The use of fungicides contributes to the reduction of disease and the formation of quality herbs. The best indicators against flour dew and septoriosis of leaves were obtained for the treatment of Alto Super 330 EC, CE (0.5 l / ha) and tank Maxim 025 FS, tc.s. (1.0 l / ha) + Horus 75 WG, VH (0.6 kg / ha).

References

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Published
2019-03-20
How to Cite
Retman, S., Nychyporuk, O., & ShevchukО. (2019). Fungicides against diseases of lawn grass leaves. Quarantine and Plant Protection, (3-4), 7-9. https://doi.org/10.36495/2312-0614.2019.3-4.7-9
Section
MEANS AND METHODS