Abstract
The use of nutrient solutions derived from the bioprocessing of organic feedstocks such as waste sludge from aquaculture appears to be a promising alternative to inorganic fertilizer. This study assessed the effect of feed composition (predominantly animal- versus plant-based) of feeds fed to Nile tilapia ( Oreochromis niloticus ) on performance parameters of lettuce ( Lactuca sativa var. Bonarda RZ) grown in nutrient solutions based on batch-wise aerobically remineralized fish manure ( t = 41 d) with and without fertilizer amendment versus a conventional hydroponic fertilizer solution. Lettuce seedlings were grown in hydroponic grow boxes for 28 days. The fertilizer-amended treatments outperformed the treatments without additional fertilizer in terms of growth but had a lower nutrient use efficiency. The treatments growing in a nutrient solution based on manure from fish fed with a plant-based diet performed best, both in the fertilized and unfertilized treatment group. The results indicate a biostimulatory effect of the remineralized fish manure. Fish manure originating from freshwater fish such as O. niloticus that were fed diets with a high inclusion rate of plant-based feed ingredients such as pea or faba bean meal appears thus to be a promising feedstock for amended organic nutrient solutions that allows for fertilizer savings while increasing yield.
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Claims 5
Claim · model-written summary
Fertilizer amendment improved lettuce growth relative to no amendment.
- Taxon
- lettuce
Lactuca sativae1 - Treatment
- fertilizer-amended treatmentse0
- Outcome
- growthe0
- Direction
- outperformede0
- Comparator
- treatments without additional fertilizere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The fertilizer-amended treatments outperformed the treatments without additional fertilizer in terms of growth but had a lower nutrient use efficiency.”
e1“performance parameters of lettuce ( Lactuca sativa var. Bonarda RZ)”
Claim · model-written summary
Fertilizer amendment lowered lettuce nutrient use efficiency relative to no amendment.
- Taxon
- lettuceLactuca sativae1
- Treatment
- fertilizer-amended treatmentse0
- Outcome
- nutrient use efficiencye0
- Direction
- lowere0
- Comparator
- treatments without additional fertilizere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The fertilizer-amended treatments outperformed the treatments without additional fertilizer in terms of growth but had a lower nutrient use efficiency.”
e1“performance parameters of lettuce ( Lactuca sativa var. Bonarda RZ)”
Claim · model-written summary
Manure from fish fed a plant-based diet gave the best lettuce performance with and without fertilizer.
- Taxon
- lettuceLactuca sativae1
- Treatment
- nutrient solution based on manure from fish fed with a plant-based diete0
- Outcome
- performed beste0
- Direction
- performed beste0
- Qualifier
- both in the fertilized and unfertilized treatment groupe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The treatments growing in a nutrient solution based on manure from fish fed with a plant-based diet performed best, both in the fertilized and unfertilized treatment group.”
e1“performance parameters of lettuce ( Lactuca sativa var. Bonarda RZ)”
Claim · model-written summary
The authors infer a biostimulatory effect of remineralized fish manure on lettuce.
- Taxon
- lettuceLactuca sativae1
- Treatment
- remineralized fish manuree0
- Outcome
- biostimulatory effecte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results indicate a biostimulatory effect of the remineralized fish manure.”
e1“performance parameters of lettuce ( Lactuca sativa var. Bonarda RZ)”
Claim · model-written summary
The authors propose plant-fed fish manure as a feedstock for amended hydroponic solutions that can save fertilizer and raise lettuce yield.
- Taxon
- lettuceLactuca sativae1
- Outcome
- promising feedstock for amended organic nutrient solutions that allows for fertilizer savings while increasing yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fish manure originating from freshwater fish such as O. niloticus that were fed diets with a high inclusion rate of plant-based feed ingredients such as pea or faba bean meal appears thus to be a promising feedstock for amended organic nutrient solutions that allows for fertilizer savings while increasing yield.”
e1“performance parameters of lettuce ( Lactuca sativa var. Bonarda RZ)”
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See all 248 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.