Abstract
Increased concerns about residues in vegetables and soil contamination necessitate the use of safer and eco-friendly fertilisers and pesticides. The present study investigated effects of applying Ascophyllum nodosum extract (SW) and Spirulina platensis (SP) on in vitro plant morphogenesis of Hybrid Beit Alpha F1 cucumbers, followed by an evaluation of their effects on plant growth, fruit yield and rhizosphere inhabiting nematodes under greenhouse conditions. Treatments in the greenhouse trial consisted of soil drenching with Spirulina platensis at: 1000 mg l−1 (SP2) and 2000 mg l−1 (SP4); with Ascophyllum nodosum (v:v%) at: 0.25% (SW0.25), 0.5% (SW0.5) and 0.75% (SW0.75); and a control where seedlings were treated with neither seaweed or Spirulina (Control: C). In the greenhouse trial, both biostimulants improved the growth of the cucumbers; plant height, biomass (SW only), leaf chlorophyll, fruit firmness (SW only), fruit length, fruit diameter and fruit total soluble solids, compared with the control. SW0.25 resulted in the highest overall positive effects on the cucumbers with enhancement of plant growth and yield parameters. Application of Ascophyllum nodosum and Spirulina platensis significantly influenced the endogenous IAA hormonal concentration in the cucumber leaves. In addition, the tested biostimulants influenced the relative abundance of major nematode taxa in the cucumber rhizosphere: percentages of free-living nematodes (FLN%) and bacterivores and fungivores (BF%). The results of the study indicated opportunities for developing strategies for sustainable organic production of cucumbers using safe biostimulants to replace the traditional use of chemical inputs.
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Claims 7
Claim · model-written summary
Both biostimulants improved cucumber height and fruit length and diameter versus the control.
- Taxon
- cucumbers
Cucumis sativuse0 - Treatment
- both biostimulantse0
- Outcome
- fruit length, fruit diametere0
- Direction
- improvede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both biostimulants improved the growth of the cucumbers; plant height, biomass (SW only), leaf chlorophyll, fruit firmness (SW only), fruit length, fruit diameter and fruit total soluble solids, compared with the control”
Claim · model-written summary
Ascophyllum nodosum improved cucumber biomass and fruit firmness versus control.
- Taxon
- cucumberCucumis sativust0
- Treatment
- SWe0
- Outcome
- biomass (SW only)e0
- Direction
- improvede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both biostimulants improved the growth of the cucumbers; plant height, biomass (SW only), leaf chlorophyll, fruit firmness (SW only), fruit length, fruit diameter and fruit total soluble solids, compared with the control”
t0“cucumber plants”
Claim · model-written summary
Biostimulants improved cucumber leaf chlorophyll and fruit soluble solids.
- Taxon
- cucumbersCucumis sativuse0
- Treatment
- both biostimulantse0
- Outcome
- fruit total soluble solidse0
- Direction
- improvede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both biostimulants improved the growth of the cucumbers; plant height, biomass (SW only), leaf chlorophyll, fruit firmness (SW only), fruit length, fruit diameter and fruit total soluble solids, compared with the control”
Claim · model-written summary
SW0.25 had the highest positive effect on cucumber growth and yield parameters.
- Taxon
- cucumbersCucumis sativuse0
- Treatment
- SW0.25e0
- Outcome
- plant growth and yield parameterse0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SW0.25 resulted in the highest overall positive effects on the cucumbers with enhancement of plant growth and yield parameters”
Claim · model-written summary
Both applications significantly changed endogenous IAA concentration in cucumber leaves; the direction was unstated.
- Taxon
- cucumberCucumis sativuse0
- Organ / stage
- leavese0
- Treatment
- Application of Ascophyllum nodosum and Spirulina platensise0
- Outcome
- endogenous IAA hormonal concentratione0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of Ascophyllum nodosum and Spirulina platensis significantly influenced the endogenous IAA hormonal concentration in the cucumber leaves”
Claim · model-written summary
The biostimulants changed free-living nematode and bacterivore/fungivore proportions in cucumber rhizosphere.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- tested biostimulantse0
- Outcome
- percentages of free-living nematodes (FLN%) and bacterivores and fungivores (BF%)e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the tested biostimulants influenced the relative abundance of major nematode taxa in the cucumber rhizosphere: percentages of free-living nematodes (FLN%) and bacterivores and fungivores (BF%)”
Claim · model-written summary
The authors identify these biostimulants as an option for sustainable organic cucumber production.
- Taxon
- cucumbersCucumis sativuse0
- Outcome
- sustainable organic production of cucumbers using safe biostimulantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“opportunities for developing strategies for sustainable organic production of cucumbers using safe biostimulants to replace the traditional use of chemical inputs”
The same questions in other papers
other · yield · Cucumis sativus (cucumber)Positive and negative results
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- positive
- negative
- no effect
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See all 23 papers →other · quality: sugar starch · Cucumis sativus (cucumber)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.