Paper · 2009 · eScholarship (California Digital Library)

Impact of nitrogen fertilization and the soil type on the quality and yield of sweet sorghum juice

Roland A. Y. Holou; Gene Stevens

12
claims
18
verbatim quotes
1
citations
2
research areas
✓
Open access

Abstract

Because of the growing need of finding alternative fuel, interest is increasing in biofuel crops such as sweet sorghum. Unfortunately, many challenges such as the input cost must be overcome before this plant can be sustainably and profitably used for biofuel production. One way to lower the input cost is through nitrogen fertilization management. To test how sorghum respond to N fertilization, M81E variety used was. The experiment was carried out in three types of soil (clay, sand, and Tipton loam) in Portageville (South Missouri). Seven N rate were applied i.e. (0, 22, 45, 67, 90, 112, and 135 kg/ha) with four repeats. Sorghum was harvested 5 months after planting. Data was collected on biomass production, juice yield, water content, pH, density, sugar yield. SAS was used to determine the differences between treatments. The biomass is highly affected by the soil type (P<.0001), and not by N rate. The amount of water accumulated in sorghum stalk in related to the soil type (P<.0001) and unlike the water content, to the N rate applied (P=0.01). The density of sorghum juice does not depend on the N rate (P=0.34) but instead on the soil type (P=0.02). The pH of sorghum juice does not depend either on the soil type (P=0.13) or on the N rate (P= 0.19). The volume and weight of juice obtained depends on both the soil type (P<.0001) and the N rate (P<0.03). The sugar yield depends on both the soil type (P<.0001) and the N rate (P= 0.02).

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Claims 12

Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Soil type significantly affected sorghum biomass.

Taxon
sweet sorghumt0
Outcome
biomasse0
Setting
soil typee0

Not reportedDirection

Verbatim

e0

“The biomass is highly affected by the soil type (P<.0001)”

✓ located verbatim in the source · abstract, characters 834–891 · show in text ↑
t0

“sweet sorghum”

✓ located verbatim in the source · title, characters 79–92 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Nitrogen rate did not affect sorghum biomass.

Taxon
sweet sorghumt0
Treatment
N ratee0
Outcome
biomasse0

Not reportedComparatorDirection

Verbatim

e0

“The biomass is highly affected by the soil type (P<.0001), and not by N rate.”

✓ located verbatim in the source · abstract, characters 834–911 · show in text ↑
t0

“sweet sorghum”

✓ located verbatim in the source · title, characters 79–92 · show in text ↑
Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Soil type was related to water accumulated in sorghum stalk.

Taxon
sorghumSorghume0
Outcome
amount of water accumulated in sorghum stalke0
Setting
soil typee0

Not reportedDirection

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

Sorghum
Sorghum · Taxon · picture of the genus (one of its species)Evelyn Simak · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“The amount of water accumulated in sorghum stalk in related to the soil type (P<.0001)”

✓ located verbatim in the source · abstract, characters 912–998 · show in text ↑
Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Nitrogen rate was related to water accumulated in sorghum stalk.

Taxon
sorghumSorghume0
Treatment
N rate appliede0
Outcome
amount of water accumulated in sorghum stalke0

Not reportedDirection

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

Sorghum
Sorghum · Taxon · picture of the genus (one of its species)Evelyn Simak · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“The amount of water accumulated in sorghum stalk in related to the soil type (P<.0001) and unlike the water content, to the N rate applied (P=0.01)”

✓ located verbatim in the source · abstract, characters 912–1059 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Nitrogen rate did not affect sorghum juice density.

Taxon
sorghumSorghume0
Treatment
N ratee0
Outcome
density of sorghum juicee0
Direction
does not depende0

Not reportedComparator

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

Sorghum
Sorghum · Taxon · picture of the genus (one of its species)Evelyn Simak · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“The density of sorghum juice does not depend on the N rate (P=0.34)”

✓ located verbatim in the source · abstract, characters 1061–1128 · show in text ↑
Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Soil type was related to sorghum juice density.

Taxon
sorghumSorghume0
Outcome
density of sorghum juicee0
Setting
soil typee0

Not reportedDirection

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

Sorghum
Sorghum · Taxon · picture of the genus (one of its species)Evelyn Simak · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“The density of sorghum juice does not depend on the N rate (P=0.34) but instead on the soil type (P=0.02)”

✓ located verbatim in the source · abstract, characters 1061–1166 · show in text ↑
Associationobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Sorghum juice pH did not depend on soil type.

Taxon
sorghumSorghume0
Outcome
pH of sorghum juicee0
Direction
does not depende0
Setting
soil typee0

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

Sorghum
Sorghum · Taxon · picture of the genus (one of its species)Evelyn Simak · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“The pH of sorghum juice does not depend either on the soil type (P=0.13)”

✓ located verbatim in the source · abstract, characters 1168–1240 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Sorghum juice pH did not depend on nitrogen rate.

Taxon
sorghumSorghume0
Treatment
N ratee0
Outcome
pH of sorghum juicee0
Direction
does not depende0

Not reportedComparator

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

Sorghum
Sorghum · Taxon · picture of the genus (one of its species)Evelyn Simak · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“The pH of sorghum juice does not depend either on the soil type (P=0.13) or on the N rate (P= 0.19)”

✓ located verbatim in the source · abstract, characters 1168–1267 · show in text ↑
Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Soil type affected the volume and weight of sorghum juice.

Taxon
sweet sorghumt0
Outcome
volume and weight of juice obtainede0
Setting
soil typee0

Not reportedDirection

Verbatim

e0

“The volume and weight of juice obtained depends on both the soil type (P<.0001)”

✓ located verbatim in the source · abstract, characters 1269–1348 · show in text ↑
t0

“sweet sorghum”

✓ located verbatim in the source · title, characters 79–92 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Nitrogen rate affected the volume and weight of sorghum juice.

Taxon
sweet sorghumt0
Treatment
N ratee0
Outcome
volume and weight of juice obtainede0

Not reportedComparatorDirection

Verbatim

e0

“The volume and weight of juice obtained depends on both the soil type (P<.0001) and the N rate (P<0.03)”

✓ located verbatim in the source · abstract, characters 1269–1372 · show in text ↑
t0

“sweet sorghum”

✓ located verbatim in the source · title, characters 79–92 · show in text ↑
Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Soil type affected sorghum sugar yield.

Taxon
sweet sorghumt0
Outcome
sugar yielde0
Setting
soil typee0

Not reportedDirection

Verbatim

e0

“The sugar yield depends on both the soil type (P<.0001)”

✓ located verbatim in the source · abstract, characters 1374–1429 · show in text ↑
t0

“sweet sorghum”

✓ located verbatim in the source · title, characters 79–92 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Nitrogen rate affected sorghum sugar yield.

Taxon
sweet sorghumt0
Treatment
N ratee0
Outcome
sugar yielde0

Not reportedComparatorDirection

Verbatim

e0

“The sugar yield depends on both the soil type (P<.0001) and the N rate (P= 0.02)”

✓ located verbatim in the source · abstract, characters 1374–1454 · show in text ↑
t0

“sweet sorghum”

✓ located verbatim in the source · title, characters 79–92 · show in text ↑

nitrogen · growth · SorghumResults differ

93 papers: 81 positive, 12 negative or no effect

11 papers in the same direction as this paper · 81 in the opposite direction

  1. positive
  2. positive
  3. positive

89 papers more in this group

See all 93 papers →

nitrogen · organism · SorghumPositive and negative results

3 papers: 1 positive, 2 negative or no effect

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

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

nitrogen · soil: chemistry · SorghumPositive and negative results

6 papers: 3 positive, 3 negative or no effect

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

  1. positive
  2. positive
  3. positive

2 papers more in this group

See all 6 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.