Development of a nanoemulsion bioherbicide and its herbicidal efficacy

Area of Science:

• Agricultural Science
• Environmental Science
• Nanotechnology

Background:

• Bioherbicide applications offer eco-friendly weed control for sustainable agriculture.
• Current research focuses on enhancing the WeedLock bioherbicide into a ready-to-use nanoemulsion.
• Nanoemulsion composition includes 2-undecanone, Termul 5030, POE(20)SMO, and water, with 5% active ingredient.

Purpose of the Study:

• To develop a stable and effective nanoemulsion bioherbicide from WeedLock.
• To evaluate the weed control efficacy of the developed nanoemulsion formulations.
• To compare the efficacy of the best nanoemulsion formulation against synthetic herbicides.

Main Methods:

• Eleven nanoemulsion formulations were prepared with varying compositions.
• Formulation stability was assessed through centrifugation, storage, and thermal stability tests.
• Weed control efficacy was evaluated on Ageratum conyzoides L., Eleusine indica (L.) Gaertn., and Cyperus iria L. using dose-response experiments.

Main Results:

• Three formulations (WLRF7, WLRF9, WLRF11) exhibited excellent stability.
• The WLRF9 formulation showed superior weed control efficacy (98.39%) compared to WLRF7 (83.90%) and WLRF11 (91.31%).
• At the recommended rate, WLRF9 demonstrated comparable efficacy to glufosinate-ammonium and glyphosate isopropyl-amine.

Conclusions:

• The developed nanoemulsion bioherbicide formulation (WLRF9) shows significant potential for effective weed control.
• This eco-friendly alternative offers a viable option for sustainable agricultural practices.
• Further research may explore broader applications and long-term environmental impact.