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Suitability of residues from seaweed and fish processing for composting and as fertilizer

Cabell, Joshua; Eich-Greatorex, Susanne; Ion, Violeta Alexandra; Krogstad, Tore; Matsia, Sevasti; Perikli, Maria; Salifoglou, Athanasios and Løes, Anne-Kristin (2024) Suitability of residues from seaweed and fish processing for composting and as fertilizer. .

[thumbnail of Temperature data] Microsoft Excel - Data - Norwegian/Norsk (Temperature data)
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2MB
[thumbnail of Compost data] Microsoft Excel - Data - English (Compost data)
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155kB
[thumbnail of Minitab data] Other format - Data - English (Minitab data)
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75MB
[thumbnail of Minitab nutrient analysis data] Other format - Data - English (Minitab nutrient analysis data)
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29MB


Summary in the original language of the document

There is a need to find novel sources of fertilizers to meet the increasing food demands of a growing human population and alternatives to mined and synthetic fertilizers for the certified organic sector. Marine residues contain all (micro-)macro-nutrients that plants need. Composting is a common method for processing organic residues for use in horticulture. To that end, a small-scale composting experiment was conducted in Dewar flasks with five marine residues mixed in six combinations: dried and ground rockweed (Ascophyllum nodosum), algae fiber from chemically processed rockweed, ground fish bones and fishmeal from cod (Gadus morhua), and ground blue mussels (Mytilus edulis). Physicochemical analyses were run on the residues and their mixtures before and after composting, with the temperature monitored over 92 days. The goal was to assess whether these residues were suitable for aerobic composting, based on tem-perature profiles and changes in physiochemical parameters, and to evaluate the final composts as potential fertilizers. The combination of algae fiber and fishmeal generated the highest heat and exhibited the greatest reduction in volume. None of the finished composts, however, were sufficiently balanced for use as fertilizers alone, but they could provide valuable organic matter and nutrients in combination with other nutrient sources.


EPrint Type:Data set
Agrovoc keywords:
Language
Value
URI
English
composts
http://aims.fao.org/aos/agrovoc/c_1795
English
composting
http://aims.fao.org/aos/agrovoc/c_15956
English
marine capture fisheries
http://aims.fao.org/aos/agrovoc/c_33798087
English
seaweed processing
http://aims.fao.org/aos/agrovoc/c_d3514628
English
thermodynamics
http://aims.fao.org/aos/agrovoc/c_75fa93b8
English
organic fertilizers
http://aims.fao.org/aos/agrovoc/c_4592
English
plant nutrition
http://aims.fao.org/aos/agrovoc/c_16379
English
organic agriculture
http://aims.fao.org/aos/agrovoc/c_15911
Subjects: Crop husbandry > Composting and manuring
Food systems > Recycling, balancing and resource management
Soil > Nutrient turnover
Environmental aspects > Air and water emissions
Research affiliation: Greece > The Aristotle University of Thessaloniki
Norway > NMBU - Norwegian University of Life Sciences
Norway > NORSØK - Norwegian Centre for Organic Agriculture
Romania > USAMV - Univ. of Agron. Sciences and Vet. Medicine
Horizon Europe or H2020 Grant Agreement Number:817992
Deposited By: Cabell, Joshua Fenton
ID Code:53568
Deposited On:02 Jul 2024 07:28
Last Modified:02 Jul 2024 07:28
Document Language:English
Status:Submitted

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