Enhancing pest management - Utilizing supplementary food spray to harness predatory insects against fall armyworm in maize crop of Vinh Phuc Province, Vietnam

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Authors

  • ROBERT K. MENSAH
     NSW Department of Primary Industries, Australian Cotton Research Institute, Narrabri, Locked Bag 1000, NSW-2390 ,AU
  • NGUYEN VAN LIEM
     Plant Protection Research Institute, Duc Thang Ward, Bac Tu Liem District, Ha Noi City ,VN
  • BUI VAN DUNG
     Plant Protection Research Institute, Duc Thang Ward, Bac Tu Liem District, Ha Noi City ,VN
  • BUI THI HAI YEN
     Plant Protection Research Institute, Duc Thang Ward, Bac Tu Liem District, Ha Noi City ,VN
  • PHAM DUY TRONG
     Plant Protection Research Institute, Duc Thang Ward, Bac Tu Liem District, Ha Noi City ,VN

DOI:

https://doi.org/10.18311/jbc/2024/43108

Keywords:

Azadirachtin, beneficial arthropods, predator-to-prey ratio, Spodoptera frugiperda, supplementary food spray

Abstract

The effect of supplementary food spray on the fall armyworm (Spodoptera frugiperda) and beneficial insects (predominantly predatory insects) was studied in commercial maize field experiments from 2020 to 2022. The food spray formulation was developed from local ingredients in Vietnam, both with and without neem extract. The sugar-based rice dough product attracted and sustained beneficial insects, significantly reducing fall armyworm populations. Compared to conventional insecticide treatments, the net margin achieved in plots treated with food spray was higher ($3,467) to $3,394 in the conventional insecticide-treated plots demonstrating its economic viability (1 AUD=17.28 VND). Our study observed an average predator-to-prey ratio of 9.2:1 per plant in the food-spray-treated plots, and that was effective in managing the fall armyworm throughout the season. We propose that this ratio can serve as a valuable parameter and decisionmaking tool in food spray-based Integrated Pest Management (IPM) programs against fall armyworm in maize fields. Therefore, we suggest that food sprays can be incorporated into IPM strategies to successfully manage fall armyworm infestation in maize crop.

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Published

2024-10-08

How to Cite

MENSAH, R. K., VAN LIEM, N., VAN DUNG, B., HAI YEN, B. T., & TRONG, P. D. (2024). Enhancing pest management - Utilizing supplementary food spray to harness predatory insects against fall armyworm in maize crop of Vinh Phuc Province, Vietnam. Journal of Biological Control, 38(3), 246–259. https://doi.org/10.18311/jbc/2024/43108

Issue

Volume 38, Issue 3, September 2024

Section

Research Articles

License

Copyright (c) 2024 Robert K. Mensah, Nguyen Van Liem, Bui Van Dung, Bui Thi Hai Yen, Pham Duy Trong (Author)

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

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Europe PMC
Received 2024-03-27
Accepted 2024-07-23
Published 2024-10-08

 

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