Use of Wastewater from Striped Catfish (<i>Pangasianodon hypophthalmus</i>) Pond Culture for Integrated Rice–Fish–Vegetable Farming Systems in the Mekong Delta, Vietnam

Da, Chau Thi; Phuoc, Le Huu; Duc, Huynh Ngoc; Troell, Max; Berg, Håkan

doi:10.1080/21683565.2015.1013241

Cited by 27 publications

(18 citation statements)

References 29 publications

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“…Nutrient loss through runoff is also a problem, and it has been reported that non-point source pollution from agriculture accounts for 60-80% of the nutrient loading to rivers and lakes (Min and Jiao, 2002), and high nitrate concentrations in drinking water has been associated with methemoglobinemia and consequential cyanosis in infants (Fan and Steinberg, 1996). The pesticides used for reducing pests and weeds in conventional farms, together with the surplus of chemical fertilizer have led to negative impacts, causing biodiversity loss and eutrophication (Chau et al, 2015;Hortle and Bush, 2003;Richter et al, 2015), and even threats to human health (Hu et al, 2015;Jones et al, 2015;Lebov et al, 2016;Rauh et al, 2011). There are signs of using less pesticides recently (Moore et al, 2009;O'Geen et al, 2010;Vymazal and Březinová, 2015), but such actions have led to serious crop yield reductions (Oerke, 2006;Oerke et al, 1994).…”

Section: The Unsustainable Living and Production Patterns At Presentmentioning

confidence: 99%

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Integrated wetlands for food production

Chen

Wong

2016

Environmental Research

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The widespread use of compound pelleted feeds and chemical fertilizers in modern food production contribute to a vast amount of residual nutrients into the production system and adjacent ecosystem are major factors causing eutrophication. Furthermore, the extensive development and application of chemical compounds (such as chemical pesticides, disinfectants and hormones used in enhancing productivity) in food production process are hazardous to the ecosystems, as well as human health. These unsustainable food production patterns cannot sustain human living in the long run. Wetlands are perceived as self-decontamination ecosystems with high productivities. This review gives an overview about wetlands which are being integrated with food production processes, focusing on aquaculture.

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Section: The Unsustainable Living and Production Patterns At Presentmentioning

confidence: 99%

“…In principle, wetlands integrated with food production are able to treat inorganic and organic residues, produce safe and quality food, and increase the variety of production by appropriate polyculture that would enhance the overall income (Chau et al, 2015).…”

Section: Strategies Of Integrating Wetlands With Food Productionmentioning

confidence: 99%

Integrated wetlands for food production

Chen

Wong

2016

Environmental Research

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“…In the deep striped catfish ponds, 58-60% of the metabolic waste of P accumulated in the system or was taken out during sludge removal. If this P could be trapped in sedimentation ponds (Anh et al 2010), then transforming this into fertilizer would become an option (Phung et al 2009, Da et al 2015. In addition, reducing the P content in the feed and improving P availability, as was done in trout feeds (Ketola & Richmond 1994), could also contribute to a further reduction of P discharge.…”

Section: P Utilization Efficiencymentioning

confidence: 99%

Quantifying sustainability indicators in striped catfish Pangasianodon hypophthalmus downstream and upstream ponds

Nhut¹,

Hảo²,

Bosma³

et al. 2017

Aquacult. Environ. Interact.

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To assess the potential for improving sustainability and efficiency in an important Vietnamese finfish culture, we quantified sustainability indicators for 2 downstream and 2 upstream 3 to 4 m deep ponds for striped catfish Pangasianodon hypophthalmus (Sauvage, 1878) production along the Mekong River, Vietnam. The resources used per kg fish produced were (downstream vs. upstream): 2.8 vs. 7.1 m 3 water, 0.04 vs. 0.14 kWh energy, 0.06 vs. 0.11 h human labour and 0.06 vs. 0.15 g antibiotics (p < 0.05). The feed conversion ratio (kg feed dry matter per kg fish wet weight) was 1.50 vs. 1.65 and feed dry matter utilization efficiency was similar (28 vs. 30%) for both types of ponds (p > 0.05). Nitrogen and phosphorus utilization efficiencies were 44 vs. 40% for nitrogen (p < 0.05) and 17.7 vs. 17.6% for phosphorus (p > 0.05). An advantage of production in deep ponds is the breakdown of organic matter through denitrification and fermentation. Based on the difference between feed input and monitored outputs and sinks, an estimated 29-37% of dry matter volatilized as CO 2 and 30-34% of nitrogen was lost as N 2 . A major disadvantage of the deep pond production system is its dependency on water exchange with the Mekong River, resulting in low biosecurity, which is aggravated by the lack of availability of disease-free fingerlings. Dealing with disease caused farmers to apply suboptimal feeding rations and to lengthen the culture period. Developing (semi-)closed systems that adopt elements from recirculation technology could improve both culture performance and sustainability.

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“…A total of 19 carbon mitigation measures related to rice cropping were taken into consideration. They were selected mainly in three ways: following the conclusions of existing literature [33,34], consulting from experts engaged in GHG mitigations of rice cropping and interviews with farmers. We attempted to make sure that these measures are more or less effective and are currently used by farmers.…”

Section: Mitigation Measures In the Surveymentioning

confidence: 99%

Evaluation of GHG Mitigation Measures in Rice Cropping and Effects of Farmer’s Characteristics: Evidence from Hubei, China

Tong

Zhang

2017

Sustainability

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Greenhouse Gas emissions from agricultural activities, such as rice cropping, have been proven to be an important cause of climate change, with constant barriers and constraints in the implementation and promotion of mitigation measures among farmers in China. However, there has been a lack of research focusing on specific mitigation measures and their characteristics. In this paper, we applied the expert assessment and best-worst scaling method to evaluate mitigation measures in rice cropping from the perspectives of effectiveness and applicability. The results showed that no mitigation measure in rice cropping was best from both an effectiveness and applicability viewpoint. However, the study found that "reducing the use of chemical fertilizers" was the most effective one, while "applying soil testing and formulated fertilization" was the most applicable one. Additionally, the older farmers spending more time on non-agricultural jobs and farming more plots of land were more likely to believe that mitigation measures related to the management of input elements would be more applicable compared to soil and water management or some types of new science and technology. Finally, we suggested that the agricultural extension agencies should popularize input elements management such as improvement of fertilizer or seeds among older farmers, and meanwhile promote soil cultivation management and new technologies for agriculture in areas where the land is more concentrated such as plains.

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Use of Wastewater from Striped Catfish (Pangasianodon hypophthalmus) Pond Culture for Integrated Rice–Fish–Vegetable Farming Systems in the Mekong Delta, Vietnam

Cited by 27 publications

References 29 publications

Integrated wetlands for food production

Integrated wetlands for food production

Quantifying sustainability indicators in striped catfish Pangasianodon hypophthalmus downstream and upstream ponds

Evaluation of GHG Mitigation Measures in Rice Cropping and Effects of Farmer’s Characteristics: Evidence from Hubei, China

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