Paper · 2010 · Scientific Journal of Riga Technical University Environmental and Climate Technologies

Hemp (Cannabis sativa L.) as an Environmentally Friendly Energyplant

Liena Poisa; Aleksandrs Adamovics

8
claims
12
verbatim quotes
27
citations
2
research areas
✓
Open access · cc-by

Abstract

Hemp ( Cannabis sativa L.) as an Environmentally Friendly Energyplant Hemp is suitable as a renewable energy resource. The aim of this study was to clarify local hemp's ( Cannabis sativa L.) possibilities for energy use. Arsenic (As), cadmium (Cd), lead (Pb) and titanium (Ti) presence in hemp was determined using an inductively coupled plasma optical emission spectrometer Optima 2100 DV. If there were increased N fertilizer rates, there were increased hemp ‘Pūriņi’ seeds and shive yield increases, but the oil content was reduced. Arsenic content was higher in the shives than in the stems with fibre. The ash content depends on non-organic substances which the plants absorb during the vegetation season. The lignin content depends on several factors: plant parts, and the N fertilizer rate. The unexplored factors have a great effect on the ash and lignin content. Hemp is suitable for cultivation and for bio-energy production in the agro-climatic conditions in Latvia.

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

Higher N fertilizer rates increased Pūriņi hemp seed yield.

Material
Pūriņie0
Treatment
increased N fertilizer ratese0
Outcome
seedse0
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

“If there were increased N fertilizer rates, there were increased hemp ‘Pūriņi’ seeds and shive yield increases”

✓ located verbatim in the source · abstract, characters 391–501 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Higher N fertilizer rates increased hemp shive yield.

Treatment
increased N fertilizer ratese0
Outcome
shive yielde0
Direction
increasese0

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

“If there were increased N fertilizer rates, there were increased hemp ‘Pūriņi’ seeds and shive yield increases”

✓ located verbatim in the source · abstract, characters 391–501 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Higher N fertilizer rates reduced hemp oil content.

Treatment
increased N fertilizer ratese0
Outcome
oil contente0
Direction
reducede0

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

“If there were increased N fertilizer rates, there were increased hemp ‘Pūriņi’ seeds and shive yield increases, but the oil content was reduced”

✓ located verbatim in the source · abstract, characters 391–534 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Arsenic content was higher in hemp shives than stems with fibre.

Organ / stage
shivese0
Outcome
Arsenic contente0
Direction
highere0
Comparator
stems with fibree0

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

“Arsenic content was higher in the shives than in the stems with fibre”

✓ located verbatim in the source · abstract, characters 536–605 · show in text ↑
t0

“Hemp”

✓ located verbatim in the source · title, characters 0–4 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Hemp ash content depended on inorganic substances absorbed during vegetation.

Compound
non-organic substancese0
Outcome
ash contente0

Not reportedDirection

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

“The ash content depends on non-organic substances which the plants absorb during the vegetation season”

✓ located verbatim in the source · abstract, characters 607–709 · show in text ↑
t0

“Hemp”

✓ located verbatim in the source · title, characters 0–4 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Hemp lignin content depended on plant parts and N fertilizer rate.

Organ / stage
plant partse0
Treatment
N fertilizer ratee0
Outcome
lignin contente0

Not reportedDirection

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

“The lignin content depends on several factors: plant parts, and the N fertilizer rate”

✓ located verbatim in the source · abstract, characters 711–796 · show in text ↑
t0

“Hemp”

✓ located verbatim in the source · title, characters 0–4 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Unexplored factors had a great effect on hemp ash and lignin content.

Outcome
ash and lignin contente0
Qualifier
unexplored factorse0

Not reportedSettingDirection

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

“The unexplored factors have a great effect on the ash and lignin content”

✓ located verbatim in the source · abstract, characters 798–870 · show in text ↑
t0

“Hemp”

✓ located verbatim in the source · title, characters 0–4 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

Hemp was judged suitable for cultivation and bioenergy in Latvia.

Outcome
suitable for cultivation and for bio-energy productione0
Setting
Latviae0

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

“Hemp is suitable for cultivation and for bio-energy production in the agro-climatic conditions in Latvia”

✓ located verbatim in the source · abstract, characters 872–976 · show in text ↑

fertilization · quality: oil · Cannabis sativaPositive and negative results

5 papers: 1 positive, 4 negative or no effect

3 papers in the same direction as this paper · 1 in the opposite direction

  1. positive
  2. no effect
  3. no effect

1 paper more in this group

See all 5 papers →

fertilization · yield · Cannabis sativaPositive and negative results

31 papers: 25 positive, 6 negative or no effect

24 papers in the same direction as this paper · 6 in the opposite direction

  1. positive
  2. negative
  3. no effect

27 papers more in this group

See all 31 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.