Paper · 2013 · Hunan Agricultural Sciences

Effects of Different Proportions of Nitrogen,Phosphorous and Potassium on Characters and Yield of Sweet Potato

Zhou Hon

12
claims
17
verbatim quotes
0
citations
1
research areas
—
Not open access

Abstract

In order to provide the basis for scientific and suitable fertilization of sweet potato, the field plot experiment was conducted to study the effects of different proportions of nitrogen(N), phosphorous(P) and potassium(K) on characters and yield of sweet potato. The results showed that under experimental conditions, the treatment applied with sweet potato specialized fertilizer(N∶P2 O5 ∶K2 O=16∶8∶18)and NPK formula fertilizer(N∶P2 O5 ∶K2 O=6:5:10) all showed a relatively harmony growth of stem, leaf and earthnut, and high rate of large-medium sweet potato. Among all of the treatments, the one applied with sweet potato specialized fertilizer had great economic characters and the highest yield and economic benefit, with which the yield of fresh sweet potato and dry sweet potato increased by 60.7% and 65.9% and the benefit of fresh sweet potato and dry sweet potato increased by 43.7% and 49.4%, respectively compared with CK; the followed was treatment with NPK formula fertilizer, the yield of fresh sweet potato and dry sweet potato increased by 50.6% and 59.1% and the benefit of fresh sweet potato and dry sweet potato increased by 32.5% and 41.5%, respectively compared with CK, it means sweet potato production obtained a relatively great results, and its cost is low and easily get, can be used for guiding large-scale production.

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Claims 12

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Specialized fertilizer supported harmonious stem, leaf and earthnut growth and a high large-medium tuber rate.

Taxon
sweet potatoIpomoea batatase0
Treatment
sweet potato specialized fertilizer(N∶P2 O5 ∶K2 O=16∶8∶18)e0
Outcome
relatively harmony growth of stem, leaf and earthnut, and high rate of large-medium sweet potatoe0
Direction
highe0

Not reportedComparator

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

Ipomoea batatas
Ipomoea batatas · TaxonEarth100 · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the treatment applied with sweet potato specialized fertilizer(N∶P2 O5 ∶K2 O=16∶8∶18)and NPK formula fertilizer(N∶P2 O5 ∶K2 O=6:5:10) all showed a relatively harmony growth of stem, leaf and earthnut, and high rate of large-medium sweet potato.”

✓ located verbatim in the source · abstract, characters 319–563 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

NPK formula fertilizer supported harmonious growth and a high large-medium tuber rate.

Taxon
sweet potatoIpomoea batatase0
Treatment
NPK formula fertilizer(N∶P2 O5 ∶K2 O=6:5:10)e0
Outcome
relatively harmony growth of stem, leaf and earthnut, and high rate of large-medium sweet potatoe0
Direction
highe0

Not reportedComparator

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

Ipomoea batatas
Ipomoea batatas · TaxonEarth100 · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“NPK formula fertilizer(N∶P2 O5 ∶K2 O=6:5:10) all showed a relatively harmony growth of stem, leaf and earthnut, and high rate of large-medium sweet potato.”

✓ located verbatim in the source · abstract, characters 408–563 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Specialized fertilizer produced the best economic characters, yield and benefit.

Taxon
sweet potatoIpomoea batatase0
Treatment
sweet potato specialized fertilizere0
Outcome
economic characters and the highest yield and economic benefite0
Direction
higheste0

Not reportedComparator

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

Ipomoea batatas
Ipomoea batatas · TaxonEarth100 · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the one applied with sweet potato specialized fertilizer had great economic characters and the highest yield and economic benefit”

✓ located verbatim in the source · abstract, characters 593–722 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Specialized fertilizer increased fresh sweet potato yield by 60.7% versus CK.

Taxon
sweet potatoIpomoea batatase0
Treatment
sweet potato specialized fertilizere1
Outcome
yield of fresh sweet potatoe0
Direction
increasede0
Value
60.7%e0
Comparator
CKe0

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

Ipomoea batatas
Ipomoea batatas · TaxonEarth100 · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the yield of fresh sweet potato and dry sweet potato increased by 60.7% and 65.9% and the benefit of fresh sweet potato and dry sweet potato increased by 43.7% and 49.4%, respectively compared with CK;”

✓ located verbatim in the source · abstract, characters 735–936 · show in text ↑
e1

“the one applied with sweet potato specialized fertilizer had great economic characters”

✓ located verbatim in the source · abstract, characters 593–679 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Specialized fertilizer increased dry sweet potato yield by 65.9% versus CK.

Taxon
sweet potatoIpomoea batatase0
Treatment
sweet potato specialized fertilizere1
Outcome
yield of fresh sweet potato and dry sweet potatoe0
Direction
increasede0
Value
65.9%e0
Comparator
CKe0

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

Ipomoea batatas
Ipomoea batatas · TaxonEarth100 · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the yield of fresh sweet potato and dry sweet potato increased by 60.7% and 65.9% and the benefit of fresh sweet potato and dry sweet potato increased by 43.7% and 49.4%, respectively compared with CK;”

✓ located verbatim in the source · abstract, characters 735–936 · show in text ↑
e1

“the one applied with sweet potato specialized fertilizer had great economic characters”

✓ located verbatim in the source · abstract, characters 593–679 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Specialized fertilizer increased fresh sweet potato benefit by 43.7% versus CK.

Taxon
sweet potatoIpomoea batatase0
Treatment
sweet potato specialized fertilizere1
Outcome
benefit of fresh sweet potatoe0
Direction
increasede0
Value
43.7%e0
Comparator
CKe0

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

Ipomoea batatas
Ipomoea batatas · TaxonEarth100 · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the benefit of fresh sweet potato and dry sweet potato increased by 43.7% and 49.4%, respectively compared with CK;”

✓ located verbatim in the source · abstract, characters 821–936 · show in text ↑
e1

“the one applied with sweet potato specialized fertilizer had great economic characters”

✓ located verbatim in the source · abstract, characters 593–679 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Specialized fertilizer increased dry sweet potato benefit by 49.4% versus CK.

Taxon
sweet potatoIpomoea batatase0
Treatment
sweet potato specialized fertilizere1
Outcome
benefit of fresh sweet potato and dry sweet potatoe0
Direction
increasede0
Value
49.4%e0
Comparator
CKe0

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

Ipomoea batatas
Ipomoea batatas · TaxonEarth100 · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the benefit of fresh sweet potato and dry sweet potato increased by 43.7% and 49.4%, respectively compared with CK;”

✓ located verbatim in the source · abstract, characters 821–936 · show in text ↑
e1

“the one applied with sweet potato specialized fertilizer had great economic characters”

✓ located verbatim in the source · abstract, characters 593–679 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

NPK formula fertilizer increased fresh sweet potato yield by 50.6% versus CK.

Taxon
sweet potatoIpomoea batatase0
Treatment
NPK formula fertilizere0
Outcome
yield of fresh sweet potatoe0
Direction
increasede0
Value
50.6%e0
Comparator
CKe0

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

Ipomoea batatas
Ipomoea batatas · TaxonEarth100 · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the followed was treatment with NPK formula fertilizer, the yield of fresh sweet potato and dry sweet potato increased by 50.6% and 59.1% and the benefit of fresh sweet potato and dry sweet potato increased by 32.5% and 41.5%, respectively compared with CK”

✓ located verbatim in the source · abstract, characters 937–1193 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

NPK formula fertilizer increased dry sweet potato yield by 59.1% versus CK.

Taxon
sweet potatoIpomoea batatase0
Treatment
NPK formula fertilizere0
Outcome
yield of fresh sweet potato and dry sweet potatoe0
Direction
increasede0
Value
59.1%e0
Comparator
CKe0

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

Ipomoea batatas
Ipomoea batatas · TaxonEarth100 · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the followed was treatment with NPK formula fertilizer, the yield of fresh sweet potato and dry sweet potato increased by 50.6% and 59.1% and the benefit of fresh sweet potato and dry sweet potato increased by 32.5% and 41.5%, respectively compared with CK”

✓ located verbatim in the source · abstract, characters 937–1193 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

NPK formula fertilizer increased fresh sweet potato benefit by 32.5% versus CK.

Taxon
sweet potatoIpomoea batatase0
Treatment
NPK formula fertilizere0
Outcome
benefit of fresh sweet potatoe0
Direction
increasede0
Value
32.5%e0
Comparator
CKe0

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

Ipomoea batatas
Ipomoea batatas · TaxonEarth100 · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the followed was treatment with NPK formula fertilizer, the yield of fresh sweet potato and dry sweet potato increased by 50.6% and 59.1% and the benefit of fresh sweet potato and dry sweet potato increased by 32.5% and 41.5%, respectively compared with CK”

✓ located verbatim in the source · abstract, characters 937–1193 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

NPK formula fertilizer increased dry sweet potato benefit by 41.5% versus CK.

Taxon
sweet potatoIpomoea batatase0
Treatment
NPK formula fertilizere0
Outcome
benefit of fresh sweet potato and dry sweet potatoe0
Direction
increasede0
Value
41.5%e0
Comparator
CKe0

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

Ipomoea batatas
Ipomoea batatas · TaxonEarth100 · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the followed was treatment with NPK formula fertilizer, the yield of fresh sweet potato and dry sweet potato increased by 50.6% and 59.1% and the benefit of fresh sweet potato and dry sweet potato increased by 32.5% and 41.5%, respectively compared with CK”

✓ located verbatim in the source · abstract, characters 937–1193 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

Authors recommend NPK formula fertilizer for large-scale sweet potato production because of its cost and availability.

Taxon
Sweet PotatoIpomoea batatast0
Outcome
can be used for guiding large-scale productione0
Qualifier
cost is low and easily gete0

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

Ipomoea batatas
Ipomoea batatas · TaxonEarth100 · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“its cost is low and easily get, can be used for guiding large-scale production.”

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

“Sweet Potato”

✓ located verbatim in the source · title, characters 98–110 · show in text ↑

fertilization · growth · Ipomoea batatas (sweet potato)Results differ

63 papers: 53 positive, 10 negative or no effect

52 papers in the same direction as this paper · 10 in the opposite direction

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

59 papers more in this group

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fertilization · organism · Ipomoea batatas (sweet potato)Positive 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. negative
  2. negative
  3. positive

4 papers more in this group

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fertilization · yield · Ipomoea batatas (sweet potato)Positive and negative results

145 papers: 126 positive, 19 negative or no effect

125 papers in the same direction as this paper · 18 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
  2. negative
  3. no effect

141 papers more in this group

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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.