Paper · 2025 · Jurnal Penelitian Pendidikan IPA

Appplication of Biochar and Rice Husk Ash to sulfur Absorption, Growth and Production of Shallots Plant (Allium ascalonicum L.)

Sri Pratiwi Aritonang; Ebsan Marihot Sianipar; Efbertias Sitorus; et al.

11
claims
31
verbatim quotes
1
citations
2
research areas
✓
Open access · cc-by

Abstract

In this study, the application of biochar and rice husk ash to sulfur uptake, growth and production of shallots (Allium ascalonicum L.) aims to determine the effect of biochar and rice husk ash on the growth and production of shallots (Allium ascalonicum L.) and sulfur uptake. The research was conducted using a Randomized Group Design (RAK) with two treatment factors. The first factor, rice husk biochar (B) with 3 treatment levels, namely B1 = 600 gr/plot (5 tons/ha), B2 = 1200 gr/plot (10 tons/ha), B3 = 1800 gr/plot (15 tons/ha). The second factor, rice husk ash (A) with 3 treatment levels, namely = A1 = 60 gr/plot (0.5 tons/ha), A2 = 120 gr/plot (1 ton/ha), A3 = 180 gr/plot (1.5 tons/ha). The results showed that the application of biochar had a significant effect on the number of leaves per bulb, number of tillers per clump, wet weight per bulb and dry weight per bulb, but had no significant effect on plant height, wet weight of bulbs per clump, dry weight of bulbs per bulb and sulfur uptake. Rice husk ash application had a significant effect on the number of leaves 4 weeks after planting, but had no significant effect on plant height, number of tillers per clump, wet weight of tubers per clump, wet weight per tuber, dry weight of tubers per clump, dry weight of tubers per tuber and sulfur uptake. The interaction of biochar and rice husk ash had no significant effect on plant height, number of leaves, number of tillers, wet weight of bulbs per bulb, wet weight of bulbs per clump, dry weight of bulbs per bulb, dry weight of bulbs per clump and sulfur uptake.

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 11

Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Biochar application had a significant effect on the number of leaves per bulb and the number of tillers per clump of shallots.

Treatment
application of biochare0
Outcome
number of leaves per bulb, number of tillers per clumpe1

Not reportedComparatorDirection

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

Allium cepa var. aggregatum
Allium cepa var. aggregatum · TaxonEvan-Amos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“Production of Shallots Plant (Allium ascalonicum L.)”

✓ located verbatim in the source · title, characters 75–127 · show in text ↑
e0

“The results showed that the application of biochar”

✓ located verbatim in the source · abstract, characters 700–750 · show in text ↑
e1

“had a significant effect on the number of leaves per bulb, number of tillers per clump, wet weight per bulb and dry weight per bulb”

✓ located verbatim in the source · abstract, characters 751–882 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Biochar application had a significant effect on the wet weight and dry weight per bulb of shallots.

Treatment
application of biochare0
Outcome
wet weight per bulb and dry weight per bulbe1

Not reportedComparatorDirection

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

Allium cepa var. aggregatum
Allium cepa var. aggregatum · TaxonEvan-Amos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“Production of Shallots Plant (Allium ascalonicum L.)”

✓ located verbatim in the source · title, characters 75–127 · show in text ↑
e0

“The results showed that the application of biochar”

✓ located verbatim in the source · abstract, characters 700–750 · show in text ↑
e1

“had a significant effect on the number of leaves per bulb, number of tillers per clump, wet weight per bulb and dry weight per bulb”

✓ located verbatim in the source · abstract, characters 751–882 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Biochar application had no significant effect on plant height and wet weight of bulbs per clump of shallots.

Treatment
application of biochare0
Outcome
plant height, wet weight of bulbs per clumpe2
Direction
no_changeinferrede2

Not reportedComparator

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

Allium cepa var. aggregatum
Allium cepa var. aggregatum · TaxonEvan-Amos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“Production of Shallots Plant (Allium ascalonicum L.)”

✓ located verbatim in the source · title, characters 75–127 · show in text ↑
e0

“The results showed that the application of biochar”

✓ located verbatim in the source · abstract, characters 700–750 · show in text ↑
e2

“but had no significant effect on plant height, wet weight of bulbs per clump, dry weight of bulbs per bulb and sulfur uptake”

✓ located verbatim in the source · abstract, characters 884–1008 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Biochar application had no significant effect on dry weight of bulbs per bulb and on sulfur uptake of shallots.

Treatment
application of biochare0
Outcome
dry weight of bulbs per bulb and sulfur uptakee2
Direction
no_changeinferrede2

Not reportedComparator

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

Allium cepa var. aggregatum
Allium cepa var. aggregatum · TaxonEvan-Amos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“Production of Shallots Plant (Allium ascalonicum L.)”

✓ located verbatim in the source · title, characters 75–127 · show in text ↑
e0

“The results showed that the application of biochar”

✓ located verbatim in the source · abstract, characters 700–750 · show in text ↑
e2

“but had no significant effect on plant height, wet weight of bulbs per clump, dry weight of bulbs per bulb and sulfur uptake”

✓ located verbatim in the source · abstract, characters 884–1008 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Rice husk ash application had a significant effect on the number of leaves four weeks after planting of shallots.

Treatment
Rice husk ash applicatione3
Outcome
number of leaves 4 weeks after plantinge3

Not reportedComparatorDirection

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

Allium cepa var. aggregatum
Allium cepa var. aggregatum · TaxonEvan-Amos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“Production of Shallots Plant (Allium ascalonicum L.)”

✓ located verbatim in the source · title, characters 75–127 · show in text ↑
e3

“Rice husk ash application had a significant effect on the number of leaves 4 weeks after planting”

✓ located verbatim in the source · abstract, characters 1010–1107 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Rice husk ash application had no significant effect on plant height, number of tillers per clump and wet weight of tubers per clump of shallots.

Treatment
Rice husk ash applicatione3
Outcome
plant height, number of tillers per clump, wet weight of tubers per clumpe4
Direction
no_changeinferrede4

Not reportedComparator

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

Allium cepa var. aggregatum
Allium cepa var. aggregatum · TaxonEvan-Amos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“Production of Shallots Plant (Allium ascalonicum L.)”

✓ located verbatim in the source · title, characters 75–127 · show in text ↑
e3

“Rice husk ash application had a significant effect on the number of leaves 4 weeks after planting”

✓ located verbatim in the source · abstract, characters 1010–1107 · show in text ↑
e4

“but had no significant effect on plant height, number of tillers per clump, wet weight of tubers per clump, wet weight per tuber, dry weight of tubers per clump, dry weight of tubers per tuber and sulfur uptake”

✓ located verbatim in the source · abstract, characters 1109–1319 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Rice husk ash application had no significant effect on wet weight per tuber and dry weight of tubers of shallots.

Treatment
Rice husk ash applicatione3
Outcome
wet weight per tuber, dry weight of tubers per clump, dry weight of tubers per tubere4
Direction
no_changeinferrede4

Not reportedComparator

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

Allium cepa var. aggregatum
Allium cepa var. aggregatum · TaxonEvan-Amos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“Production of Shallots Plant (Allium ascalonicum L.)”

✓ located verbatim in the source · title, characters 75–127 · show in text ↑
e3

“Rice husk ash application had a significant effect on the number of leaves 4 weeks after planting”

✓ located verbatim in the source · abstract, characters 1010–1107 · show in text ↑
e4

“but had no significant effect on plant height, number of tillers per clump, wet weight of tubers per clump, wet weight per tuber, dry weight of tubers per clump, dry weight of tubers per tuber and sulfur uptake”

✓ located verbatim in the source · abstract, characters 1109–1319 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Rice husk ash application had no significant effect on sulfur uptake of shallots.

Treatment
Rice husk ash applicatione3
Outcome
sulfur uptakee4
Direction
no_changeinferrede4

Not reportedComparator

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

Allium cepa var. aggregatum
Allium cepa var. aggregatum · TaxonEvan-Amos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“Production of Shallots Plant (Allium ascalonicum L.)”

✓ located verbatim in the source · title, characters 75–127 · show in text ↑
e3

“Rice husk ash application had a significant effect on the number of leaves 4 weeks after planting”

✓ located verbatim in the source · abstract, characters 1010–1107 · show in text ↑
e4

“but had no significant effect on plant height, number of tillers per clump, wet weight of tubers per clump, wet weight per tuber, dry weight of tubers per clump, dry weight of tubers per tuber and sulfur uptake”

✓ located verbatim in the source · abstract, characters 1109–1319 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

The interaction of biochar and rice husk ash had no significant effect on plant height, number of leaves and number of tillers of shallots.

Treatment
interaction of biochar and rice husk ashe5
Outcome
plant height, number of leaves, number of tillerse5
Direction
no_changeinferrede5

Not reportedComparator

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

Allium cepa var. aggregatum
Allium cepa var. aggregatum · TaxonEvan-Amos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“Production of Shallots Plant (Allium ascalonicum L.)”

✓ located verbatim in the source · title, characters 75–127 · show in text ↑
e5

“The interaction of biochar and rice husk ash had no significant effect on plant height, number of leaves, number of tillers”

✓ located verbatim in the source · abstract, characters 1321–1444 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

The interaction of biochar and rice husk ash had no significant effect on wet weight of bulbs per bulb, wet weight of bulbs per clump and dry weight of bulbs per bulb of shallots.

Treatment
interaction of biochar and rice husk ashe5
Outcome
wet weight of bulbs per bulb, wet weight of bulbs per clump, dry weight of bulbs per bulbe6
Direction
no_changeinferrede6

Not reportedComparator

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

Allium cepa var. aggregatum
Allium cepa var. aggregatum · TaxonEvan-Amos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“Production of Shallots Plant (Allium ascalonicum L.)”

✓ located verbatim in the source · title, characters 75–127 · show in text ↑
e5

“The interaction of biochar and rice husk ash had no significant effect on plant height, number of leaves, number of tillers”

✓ located verbatim in the source · abstract, characters 1321–1444 · show in text ↑
e6

“wet weight of bulbs per bulb, wet weight of bulbs per clump, dry weight of bulbs per bulb, dry weight of bulbs per clump and sulfur uptake”

✓ located verbatim in the source · abstract, characters 1446–1584 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

The interaction of biochar and rice husk ash had no significant effect on dry weight of bulbs per clump and sulfur uptake of shallots.

Treatment
interaction of biochar and rice husk ashe5
Outcome
dry weight of bulbs per clump and sulfur uptakee6
Direction
no_changeinferrede6

Not reportedComparator

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

Allium cepa var. aggregatum
Allium cepa var. aggregatum · TaxonEvan-Amos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

t0

“Production of Shallots Plant (Allium ascalonicum L.)”

✓ located verbatim in the source · title, characters 75–127 · show in text ↑
e5

“The interaction of biochar and rice husk ash had no significant effect on plant height, number of leaves, number of tillers”

✓ located verbatim in the source · abstract, characters 1321–1444 · show in text ↑
e6

“wet weight of bulbs per bulb, wet weight of bulbs per clump, dry weight of bulbs per bulb, dry weight of bulbs per clump and sulfur uptake”

✓ located verbatim in the source · abstract, characters 1446–1584 · show in text ↑

Oryza sativa · nutrient: content · Allium cepa (onion)Positive and negative results

3 papers: 2 positive, 1 negative or no effect

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Oryza sativa · growth · Allium cepa (onion)Positive and negative results

6 papers: 5 positive, 1 negative or no effect

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Oryza sativa · yield · Allium cepa (onion)Positive and negative results

16 papers: 15 positive, 1 negative or no effect

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biochar · growth · Allium cepa (onion)Positive and negative results

12 papers: 10 positive, 2 negative or no effect

1 paper in the same direction as this paper · 10 in the opposite direction

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biochar · yield · Allium cepa (onion)Positive and negative results

21 papers: 17 positive, 4 negative or no effect

3 papers in the same direction as this paper · 17 in the opposite direction

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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.