Bringing farmers’ perceptions into science and policy: Understanding salinity tolerance of rice in southwestern Bangladesh under climate change

Article


Islam, Aminul, Shelia, Vakhtang, Ludwig, Fulco, de Bruyn, Lisa Lobry, Rahman, M. Habib ur and Hoogenboom, Gerrit. 2021. "Bringing farmers’ perceptions into science and policy: Understanding salinity tolerance of rice in southwestern Bangladesh under climate change." Land Use Policy: the international journal covering all aspects of land use. 101. https://doi.org/10.1016/j.landusepol.2020.105159
Article Title

Bringing farmers’ perceptions into science and policy: Understanding salinity tolerance of rice in southwestern Bangladesh under climate change

ERA Journal ID21007
Article CategoryArticle
AuthorsIslam, Aminul, Shelia, Vakhtang, Ludwig, Fulco, de Bruyn, Lisa Lobry, Rahman, M. Habib ur and Hoogenboom, Gerrit
Journal TitleLand Use Policy: the international journal covering all aspects of land use
Journal Citation101
Article Number105159
Number of Pages9
Year2021
PublisherElsevier
Place of PublicationUnited Kingdom
ISSN0264-8377
1873-5754
Digital Object Identifier (DOI)https://doi.org/10.1016/j.landusepol.2020.105159
Web Address (URL)https://www.sciencedirect.com/science/article/pii/S0301479721004758
Abstract

Salinization is a major global issue due to its adverse impact on agricultural productivity and sustainability. A
substantial part of the coastal region of Bangladesh is affected by different magnitudes of salinity. Therefore,
maintaining sustainable agricultural production is a major emphasis for policymakers. The objective of this study
was to assess the salinity tolerance threshold for Boro season rice cultivation in the southwestern coastal areas of
Bangladesh based on farmers’ perceptions of salinity problem. We applied an adaptation tipping point (ATP)
approach that signifies the points, e.g., timeframe, when the threshold of a system is reached and alternate
strategies must be considered for management planning. The primary data were collected through household
surveys and focus group discussions, and were then interpreted and harmonized with literature reviews and
expert opinions. The results revealed that farmers perceived the panicle emergence stage of rice as the most
vulnerable to salinity and that a high salt concentration in the soil during this growth stage results in a lower
yield. In southwestern Bangladesh, panicle emergence of rice during the Boro season is usually observed from
March to April, the same period when salinity reaches its peak level. Based on farmers’ perspectives of salinity
problems and literature, this study defined the salinity tolerance threshold between 4–5 dS/m for traditional
Boro season rice varieties and between 8–10 dS/m for newly released salt-tolerant rice varieties. We conclude
that for the traditional Boro season rice varieties the tipping points might already have been reached in some
coastal areas of southwestern Bangladesh, while for newly released salt-tolerant rice varieties these tipping
points could be reached in the near future.

KeywordsVulnerable growth stage Panicle emergence Salt intrusion Salinity tolerance threshold
ANZSRC Field of Research 2020300202. Agricultural land management
419999. Other environmental sciences not elsewhere classified
Public Notes

Copies of this publication cannot be made publicly accessible, but can be accessed from the publisher URL on the record

Byline AffiliationsUniversity of New England
Wageningen University, Netherlands
Washington State University, United States
University of Florida, United States
University of Bonn, Germany
Muhammad Nawaz Shareef University of Agriculture, Pakistan
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