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Impact of brackish water shrimp farming at the interface of rice growing areas and the prospects for improvement in coastal India

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Title Impact of brackish water shrimp farming at the interface of rice growing areas and the prospects for improvement in coastal India
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Creator Das, M., Verma, O.P., Swain, P., Sinhababu, D.P. and Sethi, R
 
Subject Brackishwater shrimp farming . Rice-growing areas . Soil and water qualities . Shrimp . Rice sequence . Sustain productivity . Coastal area
 
Description Not Available
The coastal plain of Odisha in the northeastern region of India is designated the Brice bowl^ of the state and is vulnerable to the impact of brackishwater shrimp farming, a prominent livelihood in southeastern Asia. Shrimp farming is highly profitable. However, owing to plentiful resources, shrimp farming has encroached on several rice-growing areas and a decline in the quality of natural resources in the coastal neighborhood has since been reported. This paper aims to study the effects of the unplanned expansion of brackishwater
shrimp farming on natural resources and to provide a pathway to suitable utilization in order to improve the livelihood security of marginal shrimp farming communities in coastal Odisha, India. The practice of brackishwater shrimp farming has been determined to induce salt stress at 341–9387 ppt ha−1
crop−1 with a soil EC ranging from 0.3 to 3.4 and 0.5 to 9.5 dSm−1 under the Scientific Extensive Traditional (SET) method and 0.1 to 1.4 and 0.2 to 3.6 dSm−1 under the Traditional Improved Traditional (IT) practice during post– and pre–farming periods, respectively. Soil with ≥35% clay content underwent a severe loss of saturated hydraulic conductivity (Ks), and soil with a low exchangeable sodium percentage (6.09–8.03%) showed more susceptibility towards Na saturation than did soil with a high exchangeable sodium percentage
(>10%) after brackishwater shrimp farming. Growing salttolerant rice in shrimp ponds during non–farming periods was observed to reduce soil Ks by only 1.2–1.3-fold compared to a reduction of 22–40-fold under shrimp farming. The paper concludes that by promoting salt washing and alleviating salinity
hazards, the shrimp–rice sequence has shown promise to restore soil quality, reduce vulnerability, enhance resilience in brackishwater shrimp farming where the farms interface with rice-growing coastal areas, and provide support to conserve the coastal environment.
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Date 2018-11-19T10:41:23Z
2018-11-19T10:41:23Z
2017-12
 
Type Research Paper
 
Identifier Das, M., Verma, O.P., Swain, P., Sinhababu, D.P. and Sethi, R. 2017. Impact of brackish water shrimp farming at the interface of rice growing areas and the prospects for improvement in coastal India. Journal of Coastal Conservation, 21 (6): 981-992.
1874-7841
http://krishi.icar.gov.in/jspui/handle/123456789/12097
 
Language English
 
Relation Not Available;
 
Publisher Springer