Chitosan as a rainfastness adjuvant for agrochemicals

Symonds, B. L., Lindsay, C. I., Thomson, N. R. and Khutoryanskiy, V. V. ORCID: https://orcid.org/0000-0002-7221-2630 (2016) Chitosan as a rainfastness adjuvant for agrochemicals. RSC Advances, 6 (104). pp. 102206-102213. ISSN 2046-2069 doi: 10.1039/C6RA23485B

Abstract/Summary

Chitosan has been identified as an excellent rainfastness aid for a model agrochemical. We use fluorescent labelling and microscopy to show that chitosan deposits on Vicia faba leaves are able to resist wash off by rain, both in a lab-scale test and via simulated rain. Furthermore, via the same methods it has been demonstrated that the rainfastness of azoxystrobin, a common fungicide which is fluorescently active, can be improved by formulating with chitosan. These findings via fluorescent microscopy were in agreement with a quantitative LC-MS/MS method in which the exact quantity of active ingredient on a leaf surface was determined before and after a rain wash. The potential of chitosan as a rainfastness aid is further supported by positive comparison with a commercial tank-mix standard, with almost 100% retention of the model active ingredient achieved in both cases after 1 hour of washing with 10 mm h−1 intensity rain.

Item Type	Article
URI	https://reading-clone.eprints-hosting.org/id/eprint/67974
Identification Number/DOI	10.1039/C6RA23485B
Refereed	Yes
Divisions	Life Sciences > School of Chemistry, Food and Pharmacy > School of Pharmacy > Pharmaceutics Research Group
Publisher	Royal Society of Chemistry
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