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Green nano-emulsion intervention for water-soluble glyphosate isopropylamine (IPA) formulations in controlling Eleusine indica (E. indica)


Lim, Chaw Jiang and Basri, Mahiran and Omar, Dzolkhifli and Abdul Rahman, Mohd Basyaruddin and Salleh, Abu Bakar and Raja Abdul Rahman, Raja Noor Zaliha and Selamat, Ahmad (2012) Green nano-emulsion intervention for water-soluble glyphosate isopropylamine (IPA) formulations in controlling Eleusine indica (E. indica). Pesticide Biochemistry and Physiology, 102 (1). pp. 19-29. ISSN 0048-3575; ESSN: 1095-9939


This article describes the development of environmentally friendly nano-emulsion system for water-soluble herbicide application. Pseudoternary phase diagrams were established in the emulsion system of fatty acid methyl esters (FAMEs)/alkylpolyglucosides (APG) and/or 3-(3-hydroxypropyl)-heptamethyltrisiloxane (organosilicone)/water encompassed with 41% (w/w) glyphosate isopropylamine (IPA) as herbicide active. Pre-formulations were selected from isotropic (L) region in the phase diagrams and their emulsion system characteristics were determined. The microemulsion systems were chosen and then dispersed into water using low-energy stirring method (200 rpm for 5 min). Oil-in-water (O/W) nano-emulsions were formed with particle sizes of diameter less than 200 nm. The nano-emulsion systems showed significantly lower surface tension than a commercial formulation (Roundup®). In the biological application study, treatments of nano-emulsion formulations and Roundup® were applied on narrow-leaved weed Eleusine indica. Multiple doses of glyphosate IPA of the treatments were applied for the construction of dose–response curves for determination of effective dose (ED50). The nano-emulsion formulation showed lower ED50 was 0.40 kg a.e./ha in controlling the weed than Roundup® was 0.48 kg a.e./ha. This finding suggested that the possibility of using nano-emulsion system to increase penetration and uptake of glyphosate IPA.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Agriculture
Faculty of Biotechnology and Biomolecular Sciences
Faculty of Science
Institute of Bioscience
DOI Number: https://doi.org/10.1016/j.pestbp.2011.10.004
Publisher: Elsevier
Keywords: Nano-emulsions; Glyphosate; Alkylpolyglucosides; Fatty acid methyl esters; Eleusine indica
Depositing User: Nur Farahin Ramli
Date Deposited: 25 Nov 2013 05:25
Last Modified: 28 Sep 2016 02:18
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.pestbp.2011.10.004
URI: http://psasir.upm.edu.my/id/eprint/25241
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