Acta Univ. Agric. Silvic. Mendelianae Brun. 2019, 67, 101-110

https://doi.org/10.11118/actaun201967010101
Published online 2019-02-28

Efficacy and Crop Safety of Soil Herbicides in the Fruit Nursery

Klára Kyselová, Jan Náměstek, Luděk Laňar, Martin Mészáros

Department of Technology, Research and Breeding Institute of Pomology Holovousy Ltd., Holovousy 129, 508 01 Hořice, Czech Republic

Received October 8, 2018
Accepted January 7, 2019

The research was conducted in the fruit nursery of the Research and Breeding Institute of Pomology (RBIP) Holovousy, Czech Republic in 2015, 2016 and 2017. The efficacy and potential phytotoxic effect of soil herbicides were assessed in spring‑planted and summer‑budded rootstocks M9, MA, Gisela 5 and St. Julien A in seven treatments with the following herbicides: linuron, metazachlor, metamitron, chlorotoluron, dimethenamid‑P, pendimethalin, and combination of pendimethalin and dimethenamid‑P in one product. The effects of the surfactant and simulated rainfall in combination with the pendimethalin + dimethenamid‑P treatment were also assessed. Herbicides were applied twice a season, i.e. in spring after planting and in autumn to control weeds emerging during the season. The efficacy of the herbicide combining both pendimethalin and dimethenamid‑P was the highest in all three seasons. Metazachlor, pendimethalin and dimethenamid‑P provided satisfactory efficacy with adequate soil moisture. Pre‑emergent efficacy of metamitron, linuron and chlorotoluron was not satisfactory, especially in dryer conditions. The synergistic effect of the surfactant and rainfall on the efficacy of pendimethalin in combination with dimethenamid‑P was proved in the dry year only. None of the tested herbicides had a negative effect either on the growth and health status of planted rootstocks or subsequently on budded plants in the following year.

Funding

The research was supported by projects: NAZV nr. QJ 1510081 and project NPU I. nr. LO1608.

References

26 live references