Adjuvants for single droplet application of glyphosate

Solvejg K. Mathiassen, Per Kudsk, Ivar Lund

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


Retention and biological activity of droplets of glyphosate deposited onto plant leaves using a Drop on Demand inkjet printer application system, was examined on pot-grown Brassica napus, Solanum nigrum, Chenopodium album, Silene noctiflora and Echinocloa crus-galli plants. Retention was measured at leaf angles of 0o, 20o, 35o and 45o. Retention was higher on S. nigrum than on B. napus and higher at 0o while only minor differences were observed among 20, 35 and 45oleaf angles. Retentions on the three other plant species were significantly lower than on B. napus and S. nigrum. Retention in admixture with the adjuvant Control was significantly higher on B. napus than with any of the other adjuvants, whereas on S. nigrum no difference was observed between Control and Bermocoll E 230 FQ. Only small differences among the adjuvants were observed on C. album, S. noctiflora and E. crus-galli. The biological performance was not significantly influenced by the adjuvants except with C. album. However droplet volumes varied significantly with a minimum of 0.3 μl in admixture with Control and a maximum of 0.6 μl in combination with Adhere. In conclusion, retention could be optimized by adjuvant selection but the biological activity of glyphosate was not improved.
Original languageEnglish
Title of host publicationProceedings ISAA 2016
Publication date2016
Publication statusPublished - 2016
Event11th International Symposium on Adjuvants for Agrochemicals: Creating, Bridging and Sharing the Values of Adjuvant Technology - Hyatt Regency Monterey Hotel and Spa on Del Monte Golf , Monterey, United States
Duration: 13. Jun 201617. Jun 2016


Conference11th International Symposium on Adjuvants for Agrochemicals
LocationHyatt Regency Monterey Hotel and Spa on Del Monte Golf
CountryUnited States

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