Paper · 2023 · IOP Conference Series Earth and Environmental Science

Improvement of soybean yields using amendments on dryland soils of Aceh Besar, Indonesia

S Sufardi; S Syakur; M Mislia; et al.

6
claims
8
verbatim quotes
1
citations
1
research areas
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Open access · cc-by

Abstract

Abstract This study aimed to evaluate the response of soybeans to the application of various amendments to the sub-optimal dryland of Aceh Besar. A pot experiment was conducted in a greenhouse in Darussalam, Banda Aceh at an altitude of 3 m above sea level. The soil amendments used are biochar, compost, CaCO 3 lime, and SP-36 phosphate fertilizer (SP-36). The experiment used a bifactorial 8 x 3 Randomized Block Design (RBD) in 2 replications. The first factor was the application of amendments consisting of eight levels, namely: control (without ameliorant or 0 t ha −1 ), applications of biochar 20 t ha −1 , compost 20 t ha −1 , CaCO 3 4 t ha −1 , SP-36, 4 t ha −1 , biochar 10 t ha −1 + CaCO 3 4 t ha −1 , compost 10 t ha −1 + CaCO 3 4 t ha −1 , and biochar 10 t ha −1 + compost 10 t ha −1 . The second factor is the three soil orders originating from the dryland farming system of Aceh Besar, namely: Andisols Saree, Inceptisols Cucum, and Ultisols Jantho. The soil used was taken from the top layer at a 0-20 cm depth. The soybean tested was the Anjasmoro variety with a potential yield of 2.03-2.25 t ha −1 . The results showed that the application of amendments (Biochar, Compost, CaCO 3 , and SP-36) to three soil orders from the dryland of Aceh Besar could increase soybean growth and yield with a maximum yield of 2.2 t ha −1 . In Andisols Saree and Inceptisols Cucum, the highest soybean yield was obtained when combined with biochar and compost at a dose of 10 tons ha −1 . In Ultisols Jantho it was got when compost was given a single dose of 20 t ha −1 . The growth and yield of Anjasmoro soybean varieties on Ultisols Jantho were better than those on Andisols Saree and Inceptisols Cucum.

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 6

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Amendments increased soybean growth.

Taxon
soybeanGlycine maxe0
Treatment
amendments (Biochar, Compost, CaCO 3 , and SP-36)e0
Outcome
soybean growthe0
Direction
increasee0
Setting
Aceh Besare0

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“the application of amendments (Biochar, Compost, CaCO 3 , and SP-36) to three soil orders from the dryland of Aceh Besar could increase soybean growth and yield with a maximum yield of 2.2 t ha −1”

✓ located verbatim in the source · abstract, characters 1144–1340 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Amendments increased soybean yield, reaching a maximum of 2.2 t ha −1.

Taxon
soybeanGlycine maxe0
Treatment
amendments (Biochar, Compost, CaCO 3 , and SP-36)e0
Outcome
soybean growth and yielde0
Direction
increasee0
Value
2.2 t ha −1e0
Setting
Aceh Besare0

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“the application of amendments (Biochar, Compost, CaCO 3 , and SP-36) to three soil orders from the dryland of Aceh Besar could increase soybean growth and yield with a maximum yield of 2.2 t ha −1”

✓ located verbatim in the source · abstract, characters 1144–1340 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Biochar plus compost at 10 tons ha −1 gave the highest soybean yield in Andisols Saree and Inceptisols Cucum.

Taxon
soybeanGlycine maxe0
Treatment
biochar and compost at a dose of 10 tons ha −1e0
Outcome
soybean yielde0
Direction
higheste0
Setting
Andisols Saree and Inceptisols Cucume0

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“In Andisols Saree and Inceptisols Cucum, the highest soybean yield was obtained when combined with biochar and compost at a dose of 10 tons ha −1”

✓ located verbatim in the source · abstract, characters 1343–1488 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Compost at 20 t ha −1 gave the highest soybean yield in Ultisols Jantho.

Taxon
soybeanGlycine maxt0
Treatment
compost was given a single dose of 20 t ha −1e0
Outcome
soybean yielde1
Direction
higheste1
Setting
Ultisols Janthoe0

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“In Ultisols Jantho it was got when compost was given a single dose of 20 t ha −1”

✓ located verbatim in the source · abstract, characters 1491–1571 · show in text ↑
t0

“soybean”

✓ located verbatim in the source · title, characters 15–22 · show in text ↑
e1

“the highest soybean yield was obtained”

✓ located verbatim in the source · abstract, characters 1384–1422 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Anjasmoro soybean growth was better on Ultisols Jantho than on the other two soils.

Taxon
soybeanGlycine maxe0
Material
Anjasmoroe0
Outcome
growthe0
Direction
bettere0
Comparator
Andisols Saree and Inceptisols Cucume0
Setting
Ultisols Janthoe0

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“The growth and yield of Anjasmoro soybean varieties on Ultisols Jantho were better than those on Andisols Saree and Inceptisols Cucum”

✓ located verbatim in the source · abstract, characters 1574–1707 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Anjasmoro soybean yield was better on Ultisols Jantho than on the other two soils.

Taxon
soybeanGlycine maxe0
Material
Anjasmoroe0
Outcome
yielde0
Direction
bettere0
Comparator
Andisols Saree and Inceptisols Cucume0
Setting
Ultisols Janthoe0

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“The growth and yield of Anjasmoro soybean varieties on Ultisols Jantho were better than those on Andisols Saree and Inceptisols Cucum”

✓ located verbatim in the source · abstract, characters 1574–1707 · show in text ↑

phosphate · growth · Glycine max (soybean)Results differ

5 papers: 2 positive, 3 negative or no effect

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

  1. no effect
  2. no effect
  3. no effect

1 paper more in this group

See all 5 papers →

calcium carbonate · yield · Glycine max (soybean)Positive and negative results

4 papers: 3 positive, 1 negative or no effect

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

  1. no effect
  2. positive
  3. positive
See all 4 papers →

phosphate · yield · Glycine max (soybean)Positive and negative results

18 papers: 16 positive, 2 negative or no effect

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

  1. negative
  2. no effect
  3. positive

14 papers more in this group

See all 18 papers →

calcium carbonate · growth · Glycine max (soybean)Results agree

4 papers: 4 positive, 0 negative or no effect

3 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive
See all 4 papers →

biochar · growth · Glycine max (soybean)Results differ

60 papers: 56 positive, 4 negative or no effect

55 papers in the same direction as this paper · 4 in the opposite direction

  1. no effect
  2. no effect
  3. negative

56 papers more in this group

See all 60 papers →

biochar · yield · Glycine max (soybean)Results differ

65 papers: 60 positive, 5 negative or no effect

59 papers in the same direction as this paper · 3 in the opposite direction · 2 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. no effect

61 papers more in this group

See all 65 papers →

other · growth · Glycine max (soybean)Positive and negative results

64 papers: 62 positive, 2 negative or no effect

61 papers in the same direction as this paper · 1 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. positive

60 papers more in this group

See all 64 papers →

other · yield · Glycine max (soybean)Positive and negative results

87 papers: 81 positive, 6 negative or no effect

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

  1. no effect
  2. negative
  3. no effect

83 papers more in this group

See all 87 papers →

8 of 10 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.

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.