Effect of short-term immersion of Kappaphycus alvarezii (Doty) Doty in high nitrogen on the growth, nitrogen assimilation, carrageenan quality, and occurrence of “ice-ice” disease

Luhan, Maria Rovilla J.; Avañcena, Sheryll S.; Mateo, Jonalyn P.

doi:10.1007/s10811-014-0365-8

Cited by 34 publications

(39 citation statements)

References 19 publications

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“…Because AMPEP provides enhanced tolerance to biotic stresses, AMPEP may be considered a bioeffector [as opposed to a biostimulant; see van Oosten et al (2017) for a review]. Luhan et al (2015) showed that a short-term immersion of Kappaphycus alvarezii in a high-nitrogen-containing medium, applied before outplanting, increased growth, improved the quality of the carrageenan and, more important, decreased the occurrence of ice-ice disease. Thus, it seems that these varied preplanting procedures primed the eucheumatoids and/or enhanced their immunity to reduce the negative impacts of the epi-/endophytic pathogens.…”

Section: Susceptibility To Disease and Epiphyte Infestationsmentioning

confidence: 99%

Phyconomy: the extensive cultivation of seaweeds, their sustainability and economic value, with particular reference to important lessons to be learned and transferred from the practice of eucheumatoid farming

Hurtado¹,

Neish²,

Critchley

2019

Phycologia

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Kappaphycus and Eucheuma, known collectively as 'eucheumatoids', are two related genera of red seaweeds which currently lead the rankings for volume of global production of farmed macroalgae. Since 2009, the combined cultivated volume of these carrageenophytes overtook that of the brown seaweeds Laminaria (Saccharina) and Undaria for global production tonnages, according to statistics of the Food and Agriculture Organization of the United Nations (FAO). The Southeast Asian region, particularly Indonesia, the Philippines, Malaysia, Tanzania, and East Africa are the major producers of eucheumatoid biomass. Despite several success stories of red seaweed cultivation and the economic and socioeconomic value of their ecosystem services, there remain a number of salutary lessons to be learned from 'agronomic' practices applicable to their extensive cultivation. These case studies should be further developed, analysed, and adopted as best-practice recommendations for future socioeconomic prosperity, as well as both economic and environmental sustainability. In this review, we propose the use of the term 'phyconomy' (i.e. large-scale production of marine macroalgae for economic and industrial purposes) as an alternative to the term agronomy (i.e. terrestrial plant production).

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Section: Susceptibility To Disease and Epiphyte Infestationsmentioning

confidence: 99%

Phyconomy: the extensive cultivation of seaweeds, their sustainability and economic value, with particular reference to important lessons to be learned and transferred from the practice of eucheumatoid farming

Hurtado¹,

Neish²,

Critchley

2019

Phycologia

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“…After 40 days' growth, maximum daily growth rate (DGR) obtained was 2.29 ± 0.11 % day -1 , with productivity of 4.55 ± 0.34 g DW m -2 day -1 for K. alvarezii and 2.81 ± 0.06 % day -1 , and 6.17 ± 0.18 g DW m -2 day -1 respectively for K. striatum (Zuldin et al,2016) Kappaphycus alvarezii from the Philippines, was cultured in 2-ton concrete tanks containing 1.6 ton seawater in a flowthrough system with 4 kg biomass per tank. After 45 days, the SGR was 0.58 ± 0.02 % day -1 (Luhan et al, 2015) When the seaweeds were immersed in a tank containing 10 ppm sodium nitrate for 12 hr before culturing, the SGR increased to 1.40 ± 0.30 % day -1 after 45 days.…”

Section: Seaweed Productivitiesmentioning

confidence: 97%

Techno-Economics of Seaweed Farming Along the Coasts of Kelantan, East Coast Peninsular Malaysia

Phang¹,

Yeong²,

Hussin³

et al. 2017

MJS

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A Grand Challenge programme was initiated at the University of Malaya under the Equitable Society Research Cluster, to introduce seaweed farming to the coastal communities at Bachok district, Kelantan. Cultivation trials of selected commercial seaweeds like Kappaphycus (source of carrageenan), Gracilaria (source of agar), Gelidium (source of agar and pulp) and Ulva (salad) will be conducted using onshore and offshore systems, and the data collected is used for the techno-economics analysis. This paper discusses the techno-economics of various cultivation systems, as well as the importance of community empowerment, as a guide to the formulation of a roadmap for the integration of seaweed farming into the Bachok coastal communities. Abstrak Satu Program Grand Challenge telah dimulakan dibawah Kluster Penyelidikan Equitable Society di Universiti Malaya bagi memperkenalkan pengkulturan rumpair laut kepada komuniti persisiran pantai di daerah Bachok, Kelantan. Percubaan pengkulturan rumpair laut terpilih seperti Kappaphycus (sumber carrageenan), Gracilaria (sumber agar), Gelidium (sumber agar dan pulpa) dan Ulva (salad) akan dilaksanakan dengan menggunakan sistem tepi pantai (on-shore) dan luar pantai (off-shore), dan data-data yang dikumpulkan ini digunakan dalam analisis tekno-ekonomi. Makalah ini membincangkan teknoekonomi bagi pelbagai sistem pengkulturan serta kepentingan pemberdayaan komuniti, sebagai panduan kepada perumusan pelan hala tuju untuk mengintegrasikan pengkulturan rumpair laut ke komuniti pesisiran pantai Bachok.

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“…urea) to increase the resistance to disease when the first signs of disease appear. Studies using seaweed extract bio-stimulants (Borlongan et al 2011;Hurtado et al 2012;Ali et al 2018Ali et al , 2020 and inorganic fertilizers (Luhan et al 2015) have shown good growth of Kappaphycus after enrichment. Similar encouraging results were reported when using a seaweed bio-stimulant in Saccharina japonica (Umanzor et al 2019) and Gracilaria fisheri (Chirapart et al 2019).…”

Section: Kap Analysesmentioning

confidence: 99%

Understanding biosecurity: knowledge, attitudes and practices of seaweed farmers in the Philippines

et al. 2021

Self Cite

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Farmers are one of the most important components of any plant-based cultivation industry. The Philippines is one of the world’s major producers of red carrageenophyte algae and has tens of thousands of farmers involved in this industry. The production of algae such as Kappaphycus and Eucheuma increased significantly from the early 1970s, when the industry was established, before declining from the mid-2000s, due to a number of reasons, including disease and epiphyte outbreaks. The introduction of biosecurity measures has been one approach used to tackle this decline. Biosecurity-related knowledge, attitude and practices (KAP) of the seaweed farmers were assessed in the four highest seaweed producing regions in the Philippines: (1) Tawi-Tawi, (2) Palawan, (3) Zamboanga and (4) Bohol. Analyses showed that seaweed farmers from Tawi-Tawi had relatively higher KAP mean scores than the other three sites. Palawan and Bohol farmers, however, scored lower on their knowledge, higher on their attitude and highest on their practices compared with the other areas. Farmers from Zamboanga scored the lowest in both their attitude and practice mean scores, although their knowledge score was one of the highest. This is the first KAP assessment applied to the seaweed farming industry globally and the results, in which the farmers’ biosecurity-related knowledge and practices, which scored “Fair” (50–75%) across all the regions, and their attitudes, which scored predominantly “Good” (> 75%) suggest that there is potential to raise the score for biosecurity practices. This assessment highlights how biosecurity challenges are currently addressed by seaweed farmers in the Philippines and suggests how the KAP survey could be used as a tool by policymakers and scientists to address gaps in biosecurity management practices.

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Effect of short-term immersion of Kappaphycus alvarezii (Doty) Doty in high nitrogen on the growth, nitrogen assimilation, carrageenan quality, and occurrence of “ice-ice” disease

Cited by 34 publications

References 19 publications

Phyconomy: the extensive cultivation of seaweeds, their sustainability and economic value, with particular reference to important lessons to be learned and transferred from the practice of eucheumatoid farming

Phyconomy: the extensive cultivation of seaweeds, their sustainability and economic value, with particular reference to important lessons to be learned and transferred from the practice of eucheumatoid farming

Techno-Economics of Seaweed Farming Along the Coasts of Kelantan, East Coast Peninsular Malaysia

Understanding biosecurity: knowledge, attitudes and practices of seaweed farmers in the Philippines

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