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An ecological economic comparison between integrated rice-fish farming and rice monocultures with low and high dikes in the Mekong Delta, Vietnam
Stockholm University, Faculty of Science, Department of Physical Geography.ORCID iD: 0000-0003-3260-9710
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Number of Authors: 72023 (English)In: Ambio, ISSN 0044-7447, E-ISSN 1654-7209, Vol. 52, no 9, p. 1462-1474Article in journal (Refereed) Published
Abstract [en]

This study makes an ecological economic comparison between three different rice farming strategies in the Mekong Delta. Interviews were made with 30 farmers with two crops of rice and low dikes (2RLd), 30 farmers with three crops of rice and high dikes (3RHd) and 18 farmers with two crops of rice and one crop of fish (2RF). 2RF farmers had the highest annual net income and benefit cost ratio, because of low production costs and high yields of rice and fish. 2RLd farmers had the lowest annual net income. 3RHd had the highest annual rice yield, but also used the highest amount of rice seeds and agrochemicals, generating the lowest benefit cost ratio. Most farmers (70%) preferred two crops because of a higher production efficiency. High dikes and frequent use of pesticides and fertilizers were seen to decrease the water and rice quality, connectivity and biodiversity in farms with three crops. It is concluded that rice farming with two crops, and especially if integrated with fish and applying IPM, provides a sustainable alternative to rice farming with three crops and high dikes, because it makes use of the high connectivity within the rice-field ecosystem for an efficient production of healthy food through increased recycling of nutrients and  natural pest control mechanisms. 

Place, publisher, year, edition, pages
2023. Vol. 52, no 9, p. 1462-1474
Keywords [en]
Connectivity, Diversification, Food security, Integrated pest management, Pesticides, Sustainable agriculture
National Category
Agricultural Science
Identifiers
URN: urn:nbn:se:su:diva-220438DOI: 10.1007/s13280-023-01864-xISI: 000987957600001PubMedID: 37184622Scopus ID: 2-s2.0-85159336129OAI: oai:DiVA.org:su-220438DiVA, id: diva2:1792791
Available from: 2023-08-30 Created: 2023-08-30 Last updated: 2023-08-30Bibliographically approved

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Berg, Håkan

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