Leaves coverage of spray liquid and influence on herbicide efficacy
2009
Martin Prokop
The effect of spray liquid leaves coverage on efficacy of herbicides was investigated. Five nozzles sizes were used to reach different percentage coverage. The effect of leaves coverage on Elytrigia repens (L.) Desv. was evaluated using systemic herbicide (clethodim 240 g / l + surfactant) and the effect of leaves coverage on Chenopodium album L. and Galium aparine L. was evaluated using contact herbicides (bentazone 600 g / l and the mixture of bentazone 480 g / l + activator 150 g / l). No significant differences of the efficacy were observed between different percentages of leaves coverage in case of systemic herbicides. Vice versa the efficacy significantly increased with higher percentage of leaves coverage in case of contact herbicides.
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