Paper · 2005 · Guangdong nongye kexue

Application of Different Potassium Fertilizer Varieties in Preventing Early Senescence of Rice

Lingen Wei

7
claims
12
verbatim quotes
0
citations
2
research areas
—
Not open access

Abstract

The regulatory effects of different potassium fertilizer varieties on senescence of photosynthetic function,leaves and roots at late stages of rice growth were studied by using early rice Xiangliangyou 68 as tested material.The results showed that all tested potassium fertilizer varieties could maintain higher activity of SOD in leaves,higher chlorophyll content in leaves and stronger activity of root system,therefore they could delay senescence of leaf and root of rice.Applying sulfate potassium magnesium fertilizer had better effects than applying potassium sulfate and potassium chloride in delaying senescence,increasing rice yield by 2.4% and 2.8% respectively.

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Claims 7

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Potassium fertilizer maintained higher leaf SOD activity.

Treatment
potassium fertilizer varietiese0
Outcome
activity of SOD in leavese0
Direction
highere0

Not reportedComparator

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“all tested potassium fertilizer varieties could maintain higher activity of SOD in leaves”

✓ located verbatim in the source · abstract, characters 248–337 · show in text ↑
e1

“rice Xiangliangyou 68”

✓ located verbatim in the source · abstract, characters 183–204 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Potassium fertilizer maintained higher leaf chlorophyll content.

Treatment
potassium fertilizer varietiese0
Outcome
chlorophyll content in leavese0
Direction
highere0

Not reportedComparator

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“all tested potassium fertilizer varieties could maintain higher activity of SOD in leaves,higher chlorophyll content in leaves”

✓ located verbatim in the source · abstract, characters 248–374 · show in text ↑
e1

“rice Xiangliangyou 68”

✓ located verbatim in the source · abstract, characters 183–204 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Potassium fertilizer maintained stronger root activity.

Treatment
potassium fertilizer varietiese0
Outcome
activity of root systeme0
Direction
strongere0

Not reportedComparator

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“all tested potassium fertilizer varieties could maintain higher activity of SOD in leaves,higher chlorophyll content in leaves and stronger activity of root system”

✓ located verbatim in the source · abstract, characters 248–411 · show in text ↑
e1

“rice Xiangliangyou 68”

✓ located verbatim in the source · abstract, characters 183–204 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Potassium fertilizer delayed leaf and root senescence.

Treatment
potassium fertilizer varietiese1
Outcome
senescence of leaf and roote0
Direction
delaye0

Not reportedComparator

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“they could delay senescence of leaf and root of rice”

✓ located verbatim in the source · abstract, characters 422–474 · show in text ↑
e1

“all tested potassium fertilizer varieties could maintain”

✓ located verbatim in the source · abstract, characters 248–304 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Potassium magnesium sulfate better delayed senescence than potassium sulfate and potassium chloride.

Treatment
sulfate potassium magnesium fertilizere0
Outcome
senescencee0
Direction
bettere0
Comparator
potassium sulfate and potassium chloridee0

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Applying sulfate potassium magnesium fertilizer had better effects than applying potassium sulfate and potassium chloride in delaying senescence”

✓ located verbatim in the source · abstract, characters 475–619 · show in text ↑
e1

“rice Xiangliangyou 68”

✓ located verbatim in the source · abstract, characters 183–204 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Potassium magnesium sulfate increased yield by 2.4% relative to potassium sulfate.

Treatment
sulfate potassium magnesium fertilizere0
Outcome
rice yielde0
Direction
increasinge0
Value
2.4%e0
Comparator
potassium sulfatee0

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Applying sulfate potassium magnesium fertilizer had better effects than applying potassium sulfate and potassium chloride in delaying senescence,increasing rice yield by 2.4% and 2.8% respectively”

✓ located verbatim in the source · abstract, characters 475–671 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Potassium magnesium sulfate increased yield by 2.8% relative to potassium chloride.

Treatment
sulfate potassium magnesium fertilizere0
Outcome
rice yielde0
Direction
increasinge0
Value
2.8%e0
Comparator
potassium chloridee0

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Applying sulfate potassium magnesium fertilizer had better effects than applying potassium sulfate and potassium chloride in delaying senescence,increasing rice yield by 2.4% and 2.8% respectively”

✓ located verbatim in the source · abstract, characters 475–671 · show in text ↑

magnesium atom · yield · Oryza sativa (rice)Results differ

43 papers: 39 positive, 4 negative or no effect

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

  1. negative
  2. no effect
  3. negative

39 papers more in this group

See all 43 papers →

sulfate · yield · Oryza sativa (rice)Positive and negative results

18 papers: 17 positive, 1 negative or no effect

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

  1. negative
  2. positive
  3. positive

14 papers more in this group

See all 18 papers →

magnesium atom · quality: postharvest · Oryza sativa (rice)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 papers →

fertilization · physiology: antioxidant enzymes · Oryza sativa (rice)Positive and negative results

22 papers: 21 positive, 1 negative or no effect

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

  1. no effect
  2. positive
  3. positive

18 papers more in this group

See all 22 papers →

fertilization · quality: postharvest · Oryza sativa (rice)Positive and negative results

22 papers: 20 positive, 2 negative or no effect

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

  1. no effect
  2. negative
  3. positive

18 papers more in this group

See all 22 papers →

fertilization · physiology: pigments · Oryza sativa (rice)Positive and negative results

124 papers: 115 positive, 9 negative or no effect

114 papers in the same direction as this paper · 7 in the opposite direction · 2 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. negative

120 papers more in this group

See all 124 papers →

potassium · yield · Oryza sativa (rice)Positive and negative results

383 papers: 344 positive, 39 negative or no effect

343 papers in the same direction as this paper · 34 in the opposite direction · 5 reporting no difference from an alternative

  1. no effect
  2. negative
  3. no effect

379 papers more in this group

See all 383 papers →

fertilization · growth · Oryza sativa (rice)Positive and negative results

759 papers: 670 positive, 89 negative or no effect

669 papers in the same direction as this paper · 81 in the opposite direction · 8 reporting no difference from an alternative

  1. negative
  2. negative
  3. negative

755 papers more in this group

See all 759 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.