Paper · 2017 · Proceedings of the Latvian Academy of Sciences Section B Natural Exact and Applied Sciences

Effect of Vermicompost Extract and Vermicompost-Derived Humic Acids on Seed Germination and Seedling Growth of Hemp

Gederts Ievinsh; Māra Vikmane; Agnese Ķirse; et al.

8
claims
19
verbatim quotes
19
citations
2
research areas
✓
Open access · cc-by-nc-nd

Abstract

Abstract Hemp ( Cannabis sativa L.) cultivars grown for industrial use have recently emerged as a sustainable alternative source of industrial fibre and bioenergy, and is a highly valuable food and animal feed resource. The aim of the present study was to evaluate the effect of vermicompost extract, vermicompost mineral nutrient composition, and vermicompost-derived humic and fulvic acids on seed germination and growth of hemp seedlings. In general, separate application of all vermicompost components stimulated seed germination and hypocotyl and radicle growth, as well as increased chlorophyll concentration in cotyledons. Effective concentration range and the degree of stimulation varied significantly between the treatments. For practical purposes, application of vermicompost and vermicompost-derived extracts for stimulation of hemp growth could be useful at concentrations 5%, 0.05 mg·mL −1 and 1%, for vermicompost extract, humic acids and fulvic acids, respectively.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc-nd. 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 8

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Vermicompost extract stimulated hemp germination and hypocotyl and radicle growth.

Treatment
vermicompost extractt1
Outcome
seed germination and hypocotyl and radicle growthe0
Direction
stimulatede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cannabis sativa subsp. sativa
Cannabis sativa subsp. sativa · TaxonNo machine-readable author provided. Bastique assumed (based on copyright claims). · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“separate application of all vermicompost components stimulated seed germination and hypocotyl and radicle growth”

✓ located verbatim in the source · abstract, characters 454–566 · show in text ↑
t0

“Hemp”

✓ located verbatim in the source · title, characters 111–115 · show in text ↑
t1

“effect of vermicompost extract, vermicompost mineral nutrient composition”

✓ located verbatim in the source · abstract, characters 269–342 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Humic acids stimulated hemp germination and hypocotyl and radicle growth.

Treatment
humict1
Outcome
seed germination and hypocotyl and radicle growthe0
Direction
stimulatede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cannabis sativa subsp. sativa
Cannabis sativa subsp. sativa · TaxonNo machine-readable author provided. Bastique assumed (based on copyright claims). · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“separate application of all vermicompost components stimulated seed germination and hypocotyl and radicle growth”

✓ located verbatim in the source · abstract, characters 454–566 · show in text ↑
t0

“Hemp”

✓ located verbatim in the source · title, characters 111–115 · show in text ↑
t1

“humic and fulvic acids”

✓ located verbatim in the source · abstract, characters 369–391 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Fulvic acids stimulated hemp germination and hypocotyl and radicle growth.

Treatment
fulvic acidst1
Outcome
seed germination and hypocotyl and radicle growthe0
Direction
stimulatede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cannabis sativa subsp. sativa
Cannabis sativa subsp. sativa · TaxonNo machine-readable author provided. Bastique assumed (based on copyright claims). · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“separate application of all vermicompost components stimulated seed germination and hypocotyl and radicle growth”

✓ located verbatim in the source · abstract, characters 454–566 · show in text ↑
t0

“Hemp”

✓ located verbatim in the source · title, characters 111–115 · show in text ↑
t1

“humic and fulvic acids”

✓ located verbatim in the source · abstract, characters 369–391 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Separate vermicompost components increased cotyledon chlorophyll concentration.

Organ / stage
cotyledonse0
Treatment
all vermicompost componentse0
Outcome
chlorophyll concentratione0
Direction
increasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cannabis sativa subsp. sativa
Cannabis sativa subsp. sativa · TaxonNo machine-readable author provided. Bastique assumed (based on copyright claims). · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“separate application of all vermicompost components stimulated seed germination and hypocotyl and radicle growth, as well as increased chlorophyll concentration in cotyledons”

✓ located verbatim in the source · abstract, characters 454–628 · show in text ↑
t0

“Hemp”

✓ located verbatim in the source · title, characters 111–115 · show in text ↑
Observationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Effective concentration and stimulation varied significantly among treatments.

Outcome
Effective concentration range and the degree of stimulatione0
Comparator
the treatmentse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cannabis sativa subsp. sativa
Cannabis sativa subsp. sativa · TaxonNo machine-readable author provided. Bastique assumed (based on copyright claims). · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Effective concentration range and the degree of stimulation varied significantly between the treatments.”

✓ located verbatim in the source · abstract, characters 630–734 · show in text ↑
t0

“Hemp”

✓ located verbatim in the source · title, characters 111–115 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors recommend 5% vermicompost extract for hemp growth stimulation.

Treatment
vermicompost extracte0
Outcome
stimulation of hemp growthe0
Value
5%e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cannabis sativa subsp. sativa
Cannabis sativa subsp. sativa · TaxonNo machine-readable author provided. Bastique assumed (based on copyright claims). · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“application of vermicompost and vermicompost-derived extracts for stimulation of hemp growth could be useful at concentrations 5%, 0.05 mg·mL −1 and 1%, for vermicompost extract, humic acids and fulvic acids, respectively”

✓ located verbatim in the source · abstract, characters 759–980 · show in text ↑
t0

“Hemp”

✓ located verbatim in the source · title, characters 111–115 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors recommend 0.05 mg·mL −1 humic acids for hemp growth stimulation.

Treatment
humic acidse0
Outcome
stimulation of hemp growthe0
Value
0.05 mg·mL −1e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cannabis sativa subsp. sativa
Cannabis sativa subsp. sativa · TaxonNo machine-readable author provided. Bastique assumed (based on copyright claims). · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“application of vermicompost and vermicompost-derived extracts for stimulation of hemp growth could be useful at concentrations 5%, 0.05 mg·mL −1 and 1%, for vermicompost extract, humic acids and fulvic acids, respectively”

✓ located verbatim in the source · abstract, characters 759–980 · show in text ↑
t0

“Hemp”

✓ located verbatim in the source · title, characters 111–115 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors recommend 1% fulvic acids for hemp growth stimulation.

Treatment
fulvic acidse0
Outcome
stimulation of hemp growthe0
Value
1%e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cannabis sativa subsp. sativa
Cannabis sativa subsp. sativa · TaxonNo machine-readable author provided. Bastique assumed (based on copyright claims). · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“application of vermicompost and vermicompost-derived extracts for stimulation of hemp growth could be useful at concentrations 5%, 0.05 mg·mL −1 and 1%, for vermicompost extract, humic acids and fulvic acids, respectively”

✓ located verbatim in the source · abstract, characters 759–980 · show in text ↑
t0

“Hemp”

✓ located verbatim in the source · title, characters 111–115 · show in text ↑

fertilization · growth · Cannabis sativaResults differ

21 papers: 16 positive, 5 negative or no effect

15 papers in the same direction as this paper · 5 in the opposite direction

  1. negative
  2. no effect
  3. negative

17 papers more in this group

See all 21 papers →

other · growth · Cannabis sativaPositive and negative results

8 papers: 6 positive, 2 negative or no effect

5 papers in the same direction as this paper · 2 in the opposite direction

  1. positive
  2. no effect
  3. no effect

4 papers more in this group

See all 8 papers →

botanical · growth · Cannabis sativaResults agree

3 papers: 3 positive, 0 negative or no effect

2 papers in the same direction as this paper

  1. positive
  2. positive
See all 3 papers →

fertilization · physiology: pigments · Cannabis sativaResults agree

5 papers: 5 positive, 0 negative or no effect

4 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

1 paper more in this group

See all 5 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.