Abstract
Abstract The effect of soil inoculation with urea, Nostoc muscorum, and Tolypothrix tenuis on rice seedlings, nutrient contents, and structure of postharvest soil was studied. Tolypothrix tenuis and T. tenuis + urea produced the highest increase in oxidizable C (54.60% both) which resulted 7.63% higher than urea. Tolypothrix tenuis also produced the highest increase in soluble C (241.14%). Regarding nitrogen (N) soil content all treatments produced a positive difference. No treatment exerted any effect on soil available phosphorus (P). The percentage of aggregates >50 (m increased with all treatments from 6 to 12%, except N. muscorum. Tolypothrix tenuis produce the highest effect, with 50% more of these aggregates than urea. Seedling dry weight and shoot length were higher than control for all treatments. Shoots were longest with N. muscorum + urea being this treatment more effective than each Cyanobacteria alone. There was no effect on the number of leaves. Except for N. muscorum, all treatments increased the seedling N content. Postharvest soil showed a better quality when inoculated with T. tenuis or T. tenuis + urea compared to urea. Cyanobacterial fertilizers are a promising alternative to avoid soil pollution caused by agrochemicals and recover the nutrient content and structure lost after harvest as they bring to soil combined N (some of them are N fixers), exopolysaccharide that improve soil structure and bioactive substances that enhance seedlings growth.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 15
Claim · model-written summary
All treatments raised rice seedling dry weight and shoot length relative to control.
- Taxon
- rice seedlings
Oryza sativat0 - Treatment
- all treatmentse0
- Outcome
- Seedling dry weight and shoot lengthe0
- Direction
- highere0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seedling dry weight and shoot length were higher than control for all treatments.”
t0“rice seedlings”
Claim · model-written summary
Nostoc muscorum with urea produced the longest rice shoots and exceeded either cyanobacterium alone.
- Taxon
- rice seedlingsOryza sativat0
- Treatment
- N. muscorum + ureae0
- Interactor
- Nostoc muscorumDesmonostoc muscorume1symbiont
- Outcome
- Shootse0
- Direction
- longeste0
- Comparator
- each Cyanobacteria alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shoots were longest with N. muscorum + urea being this treatment more effective than each Cyanobacteria alone.”
t0“rice seedlings”
e1“Nostoc muscorum”
Claim · model-written summary
Treatments did not affect rice seedling leaf number.
- Taxon
- rice seedlingsOryza sativat0
- Treatment
- all treatmentse1
- Outcome
- number of leavese0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no effect on the number of leaves.”
t0“rice seedlings”
e1“Seedling dry weight and shoot length were higher than control for all treatments.”
Claim · model-written summary
All treatments except Nostoc muscorum increased rice seedling nitrogen content.
- Taxon
- rice seedlingsOryza sativat0
- Treatment
- all treatmentse0
- Outcome
- seedling N contente0
- Direction
- increasede0
- Qualifier
- Except for N. muscorume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Except for N. muscorum, all treatments increased the seedling N content.”
t0“rice seedlings”
Claim · model-written summary
Nostoc muscorum did not increase rice seedling nitrogen content.
- Taxon
- rice seedlingsOryza sativat0
- Treatment
- N. muscorume0
- Interactor
- Nostoc muscorumDesmonostoc muscorume1symbiont
- Outcome
- seedling N contente0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Except for N. muscorum, all treatments increased the seedling N content.”
t0“rice seedlings”
e1“Nostoc muscorum”
Claim · model-written summary
Tolypothrix tenuis increased postharvest soil oxidizable carbon by 54.60%, 7.63% more than urea.
- Treatment
- Tolypothrix tenuise0
- Outcome
- oxidizable Ce0
- Direction
- increasee0
- Value
- 54.60%e0
- Qualifier
- 7.63% higher than ureae0
- Comparator
- ureae0
Not reportedTaxon
Verbatim
e0“Tolypothrix tenuis and T. tenuis + urea produced the highest increase in oxidizable C (54.60% both) which resulted 7.63% higher than urea.”
Claim · model-written summary
Tolypothrix tenuis with urea increased soil oxidizable carbon by 54.60%, 7.63% more than urea.
- Treatment
- T. tenuis + ureae0
- Outcome
- oxidizable Ce0
- Direction
- increasee0
- Value
- 54.60%e0
- Qualifier
- 7.63% higher than ureae0
- Comparator
- ureae0
Not reportedTaxon
Verbatim
e0“Tolypothrix tenuis and T. tenuis + urea produced the highest increase in oxidizable C (54.60% both) which resulted 7.63% higher than urea.”
Claim · model-written summary
Tolypothrix tenuis increased soil soluble carbon by 241.14%.
Not reportedTaxonComparator
Verbatim
e0“Tolypothrix tenuis also produced the highest increase in soluble C (241.14%).”
Claim · model-written summary
All treatments increased soil nitrogen content.
Not reportedTaxonComparator
Verbatim
e0“Regarding nitrogen (N) soil content all treatments produced a positive difference.”
Claim · model-written summary
No treatment affected soil available phosphorus.
- Treatment
- No treatmente0
- Outcome
- soil available phosphorus (P)e0
- Direction
- No treatment exerted any effecte0
Not reportedTaxonComparator
Verbatim
e0“No treatment exerted any effect on soil available phosphorus (P).”
Claim · model-written summary
Most treatments raised the share of large soil aggregates by 6 to 12%.
- Treatment
- all treatmentse0
- Outcome
- percentage of aggregates >50 (me0
- Direction
- increasede0
- Value
- 6 to 12%e0
- Qualifier
- except N. muscorume0
Not reportedTaxonComparator
Verbatim
e0“The percentage of aggregates >50 (m increased with all treatments from 6 to 12%, except N. muscorum.”
Claim · model-written summary
Tolypothrix tenuis produced 50% more large soil aggregates than urea.
Not reportedTaxon
Verbatim
e0“Tolypothrix tenuis produce the highest effect, with 50% more of these aggregates than urea.”
e1“aggregates >50 (m”
Claim · model-written summary
Postharvest soil quality was better with Tolypothrix tenuis than with urea.
- Treatment
- T. tenuise0
- Outcome
- Postharvest soil showed a better qualitye0
- Direction
- bettere0
- Comparator
- ureae0
Not reportedTaxon
Verbatim
e0“Postharvest soil showed a better quality when inoculated with T. tenuis or T. tenuis + urea compared to urea.”
Claim · model-written summary
Postharvest soil quality was better with Tolypothrix tenuis plus urea than with urea alone.
- Treatment
- T. tenuis + ureae0
- Outcome
- Postharvest soil showed a better qualitye0
- Direction
- bettere0
- Comparator
- ureae0
Not reportedTaxon
Verbatim
e0“Postharvest soil showed a better quality when inoculated with T. tenuis or T. tenuis + urea compared to urea.”
Claim · model-written summary
The authors consider cyanobacterial fertilizers promising for reducing agrochemical soil pollution and restoring postharvest nutrients and structure.
- Outcome
- avoid soil pollution caused by agrochemicals and recover the nutrient content and structure lost after harveste0
Not reportedTaxon
Verbatim
e0“Cyanobacterial fertilizers are a promising alternative to avoid soil pollution caused by agrochemicals and recover the nutrient content and structure lost after harvest”
The same questions in other papers
nitrogen · quality: general · Oryza sativa (rice)Positive and negative results
45 papers in the same direction as this paper · 15 in the opposite direction
- negative
- negative
- no effect
57 papers more in this group
See all 61 papers →nitrogen · growth · Oryza sativa (rice)Positive and negative results
401 papers in the same direction as this paper · 101 in the opposite direction · 8 reporting no difference from an alternative
- negative
- negative
- negative
507 papers more in this group
See all 511 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.