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Open AccessFeature PaperArticle

Impact Assessment of Biological Control-Based Integrated Pest Management in Rice and Maize in the Greater Mekong Subregion

1
CABI Switzerland, Rue des Grillons 1, CH-2800 Delémont, Switzerland
2
MARA-CABI Joint Laboratory for Bio-Safety, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
3
Agricultural Information Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China
4
CABI Africa, Nairobi P.O. Box 633-00621, Kenya
*
Author to whom correspondence should be addressed.
Note: the first and second author of this manuscript contributed equally to the work and should both be considered first authors.
Insects 2019, 10(8), 226; https://doi.org/10.3390/insects10080226
Received: 29 May 2019 / Revised: 25 July 2019 / Accepted: 26 July 2019 / Published: 30 July 2019
(This article belongs to the Special Issue Pest Management in Sustainable Farming Systems)
The impact and sustainability of two interventions that have been formulated to introduce integrated pest management (IPM) into rice and maize crops in Southwestern China, Laos, and Myanmar between 2011 and 2016, and were assessed at the end of 2017. From 22 Trichogramma rearing facilities established during the interventions, 11 were still producing substantial quantities of biocontrol agents 1.5 years after project support had ended, while seven had stopped operations completely, and four were doing stock rearing only. Through the implementation of biological control-based IPM, slightly higher yields were achieved in maize and rice (4–10%), when compared to control farmers, but the difference was not statistically significant. However, the use of pesticides nearly halved when farmers started using Trichogramma egg-cards as a biological control agent. Support from either public or private institutions was found to be important for ensuring the sustainability of Trichogramma rearing facilities. Many of the suggested IPM measures were not adopted by smallholder farmers, indicating that the positive impacts of the interventions mostly resulted from the application of Trichogramma biological control agents. The following assessment suggests that further promotion of IPM adoption among farmers is needed to upscale the already positive effects of interventions that facilitate reductions in synthetic pesticide use, and the effects on sustainable agricultural production of rice and maize in the target area more generally. View Full-Text
Keywords: IPM; Trichogramma; Greater Mekong Subregion; biological control; integrated pest management; international development IPM; Trichogramma; Greater Mekong Subregion; biological control; integrated pest management; international development
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Babendreier, D.; Wan, M.; Tang, R.; Gu, R.; Tambo, J.; Liu, Z.; Grossrieder, M.; Kansiime, M.; Wood, A.; Zhang, F.; Romney, D. Impact Assessment of Biological Control-Based Integrated Pest Management in Rice and Maize in the Greater Mekong Subregion. Insects 2019, 10, 226.

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