Paper · 2022 · Korean Journal of Agricultural Science

An option to provide water and fertilization for rice production in alkaline soil: fertigation with slow release fertilizers (SRFs)

Young-Tae Shin; Kangho Jung; Chung-Keun Lee; et al.

9
claims
14
verbatim quotes
2
citations
2
research areas
✓
Open access · cc-by-nc

Abstract

An increasing global population requires a greater food supply, and accordingly there is demand for enhanced production of rice, as a major crop plant that covers half of the world's population.Rice production in arid area is extremely difficult due to poor soil fertility, salinity, deficit of irrigation water, and weather conditions.The aim of the present study was to determine whether various fertilization recipes could provide a countermeasure to allow rice production while also providing soil amendment such as soil pH adjustment.The study was conducted at an experimental field of the United Arab-Emirates (UAE) from January to April, 2022.Rice seedlings (cv.Asemi, alkaline-resistant) were transplanted in plastic containers, and different types of water and nutrient managements were employed as follows: water management (flooding and aerobic for NPKs treatment group) and nutrient management (NPKs, slow release fertilizers [SRFs] and SRFs + NPK-1 treatment groups with flooding).Water and nutrient management did not show any effect on soil pH adjustment.Rice growth was significantly enhanced in the flooding compared to the aerobic condition, whereas the effect of nutrient management clearly differed among the treatment groups, with SRFs + NPK-1 showing the best results followed by SRFs and NPKs.Most of the fertilization groups markedly accumulated soluble sugars in the shoots and grains of rice plants, but concomitantly a decrease in the roots.Overall, the level of starch showed a tendency of relatively slight perturbation by fertilization.Taken together, the results indicate that soil physical structure should be preferentially amended to find the key for suitable rice production.

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Claims 9

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Water and nutrient management did not adjust soil pH.

Treatment
Water and nutrient managemente1
Outcome
soil pH adjustmente1
Direction
did not show any effecte1

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

“Rice seedlings”

✓ located verbatim in the source · abstract, characters 650–664 · show in text ↑
e1

“Water and nutrient management did not show any effect on soil pH adjustment”

✓ located verbatim in the source · abstract, characters 994–1069 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Flooding significantly enhanced rice growth compared with aerobic conditions.

Treatment
floodinge0
Outcome
growthe0
Direction
enhancede0
Comparator
aerobic conditione0

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

“Rice growth was significantly enhanced in the flooding compared to the aerobic condition”

✓ located verbatim in the source · abstract, characters 1070–1158 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

SRFs plus NPK-1 gave the best growth response among nutrient treatments.

Treatment
SRFs + NPK-1e1
Outcome
growthe0
Direction
beste1

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

“Rice growth”

✓ located verbatim in the source · abstract, characters 1070–1081 · show in text ↑
e1

“SRFs + NPK-1 showing the best results followed by SRFs and NPKs”

✓ located verbatim in the source · abstract, characters 1252–1315 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

SRFs ranked after SRFs plus NPK-1 for growth response.

Treatment
SRFse1
Outcome
growthe0
Direction
followed bye1

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

“Rice growth”

✓ located verbatim in the source · abstract, characters 1070–1081 · show in text ↑
e1

“SRFs + NPK-1 showing the best results followed by SRFs and NPKs”

✓ located verbatim in the source · abstract, characters 1252–1315 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

NPKs ranked after SRFs for growth response.

Treatment
NPKse1
Outcome
growthe0

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

“Rice growth”

✓ located verbatim in the source · abstract, characters 1070–1081 · show in text ↑
e1

“SRFs + NPK-1 showing the best results followed by SRFs and NPKs”

✓ located verbatim in the source · abstract, characters 1252–1315 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Most fertilizer groups increased soluble sugars in rice shoots and grains.

Organ / stage
shoots and grainse0
Treatment
fertilization groupse0
Outcome
soluble sugarse0
Direction
accumulatede0

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

“Most of the fertilization groups markedly accumulated soluble sugars in the shoots and grains of rice plants”

✓ located verbatim in the source · abstract, characters 1316–1424 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Most fertilizer groups decreased soluble sugars in rice roots.

Organ / stage
rootse0
Treatment
fertilization groupse0
Outcome
soluble sugarse0
Direction
decreasee0

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

“Most of the fertilization groups markedly accumulated soluble sugars in the shoots and grains of rice plants, but concomitantly a decrease in the roots”

✓ located verbatim in the source · abstract, characters 1316–1467 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Fertilization caused relatively slight starch perturbation.

Treatment
fertilizatione1
Outcome
level of starche1
Qualifier
relatively slight perturbatione1

Not reportedComparatorDirection

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

“rice plants”

✓ located verbatim in the source · abstract, characters 1413–1424 · show in text ↑
e1

“the level of starch showed a tendency of relatively slight perturbation by fertilization”

✓ located verbatim in the source · abstract, characters 1477–1565 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors recommend prioritizing soil physical structure amendment for rice production.

Outcome
soil physical structure should be preferentially amendede0

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

“soil physical structure should be preferentially amended to find the key for suitable rice production”

✓ located verbatim in the source · abstract, characters 1608–1709 · show in text ↑

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

12 papers: 10 positive, 2 negative or no effect

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

  1. no effect
  2. negative
  3. positive

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

138 papers: 64 positive, 74 negative or no effect

63 papers in the same direction as this paper · 72 in the opposite direction · 2 reporting no difference from an alternative

  1. negative
  2. no effect
  3. negative

134 papers more in this group

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fertilization · soil: chemistry · Oryza sativa (rice)Positive and negative results

305 papers: 280 positive, 25 negative or no effect

24 papers in the same direction as this paper · 280 in the opposite direction

  1. positive
  2. positive
  3. positive

301 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.