Paper · 2018 · Indonesian Journal of Agricultural Science

INCREASING PRODUCTIVITY OF NEWLY OPENED PADDY FIELD IN TIDAL SWAMPY AREAS USING A LOCAL SPECIFIC TECHNOLOGY

Sulakhudin Sulakhudin; Muhammad Hatta

4
claims
8
verbatim quotes
7
citations
2
research areas
✓
Open access

Abstract

Expansion of new paddy land for rice in the tidal area is still experiencing problems, especially their toxic concentrations of Fe which can affect soil productivity. Efforts to improve the productivity of the newly opened paddy fields of tidal swampland are with drainage and specific nutrient management. The purpose of this research is an effort to increase the productivity of land through drainage management and application of ameliorant against iron toxicity in rice at the newly opened tidal swampland. The experimental design used was a Randomized Block Design is repeated 5 times. The results showed that technology of 1 week drying and 1 week inundation, limed 2 t ha-1 and fertilized N 112.5 kg ha-1, P2O5 22.5 kg ha-1, K2O 67.5 kg ha-1 and organic materials by 5 t ha-1, can increase rice yields by 237% from 1.40 t ha-1 to 4.72 t ha-1 of dry milled grain and can reduce 50% of Fe in the soil content of 384 ppm to 192 ppm in the newly opened paddy fields of tidal swampland in dry season. While the rainy season, technology of 1 week drying and 2 week inundation, limed 2 t ha-1 and fertilized of N 86.25 kg ha-1, P2O5 30 kg ha-1, K2O 15 kg ha-1, and organic materials by 5 t ha-1, can increase rice yield 272 % from 1.21 t ha-1 to 4.50 t ha-1 of dry milled grain and can reduce 51.88% of Fe in the soil content of 1,168 ppm to 769 ppm.

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Claims 4

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The dry-season package increased rice dry milled grain yield by 237%, from 1.40 to 4.72 t ha-1.

Treatment
technology of 1 week drying and 1 week inundation, limed 2 t ha-1 and fertilized N 112.5 kg ha-1, P2O5 22.5 kg ha-1, K2O 67.5 kg ha-1 and organic materials by 5 t ha-1e0
Outcome
rice yieldse0
Direction
increasee0
Value
237%e0
Qualifier
1.40 t ha-1 to 4.72 t ha-1e0

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

“technology of 1 week drying and 1 week inundation, limed 2 t ha-1 and fertilized N 112.5 kg ha-1, P2O5 22.5 kg ha-1, K2O 67.5 kg ha-1 and organic materials by 5 t ha-1, can increase rice yields by 237% from 1.40 t ha-1 to 4.72 t ha-1 of dry milled grain”

✓ located verbatim in the source · abstract, characters 615–868 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The dry-season package reduced soil Fe by 50%, from 384 to 192 ppm.

Treatment
technology of 1 week drying and 1 week inundation, limed 2 t ha-1 and fertilized N 112.5 kg ha-1, P2O5 22.5 kg ha-1, K2O 67.5 kg ha-1 and organic materials by 5 t ha-1e1
Outcome
Fe in the soil contente0
Direction
reducee0
Value
50%e0
Qualifier
dry seasone0

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

“can reduce 50% of Fe in the soil content of 384 ppm to 192 ppm in the newly opened paddy fields of tidal swampland in dry season”

✓ located verbatim in the source · abstract, characters 873–1001 · show in text ↑
e1

“technology of 1 week drying and 1 week inundation, limed 2 t ha-1 and fertilized N 112.5 kg ha-1, P2O5 22.5 kg ha-1, K2O 67.5 kg ha-1 and organic materials by 5 t ha-1”

✓ located verbatim in the source · abstract, characters 615–782 · show in text ↑
e2

“rice yields”

✓ located verbatim in the source · abstract, characters 797–808 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The rainy-season package increased rice yield by 272%, from 1.21 to 4.50 t ha-1.

Treatment
technology of 1 week drying and 2 week inundation, limed 2 t ha-1 and fertilized of N 86.25 kg ha-1, P2O5 30 kg ha-1, K2O 15 kg ha-1, and organic materials by 5 t ha-1e0
Outcome
rice yielde0
Direction
increasee0
Value
272 %e0

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

“technology of 1 week drying and 2 week inundation, limed 2 t ha-1 and fertilized of N 86.25 kg ha-1, P2O5 30 kg ha-1, K2O 15 kg ha-1, and organic materials by 5 t ha-1, can increase rice yield 272 % from 1.21 t ha-1 to 4.50 t ha-1 of dry milled grain”

✓ located verbatim in the source · abstract, characters 1027–1277 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The rainy-season package reduced soil Fe content by 51.88%, from 1,168 to 769 ppm.

Treatment
technology of 1 week drying and 2 week inundation, limed 2 t ha-1 and fertilized of N 86.25 kg ha-1, P2O5 30 kg ha-1, K2O 15 kg ha-1, and organic materials by 5 t ha-1e1
Outcome
Fe in the soil contente0
Direction
reducee0
Value
51.88%e0

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

“can reduce 51.88% of Fe in the soil content of 1,168 ppm to 769 ppm”

✓ located verbatim in the source · abstract, characters 1282–1349 · show in text ↑
e1

“technology of 1 week drying and 2 week inundation, limed 2 t ha-1 and fertilized of N 86.25 kg ha-1, P2O5 30 kg ha-1, K2O 15 kg ha-1, and organic materials by 5 t ha-1”

✓ located verbatim in the source · abstract, characters 1027–1194 · show in text ↑
e2

“can increase rice yield 272 %”

✓ located verbatim in the source · abstract, characters 1196–1225 · show in text ↑

lime · yield · Oryza sativa (rice)Results differ

136 papers: 123 positive, 13 negative or no effect

122 papers in the same direction as this paper · 10 in the opposite direction · 3 reporting no difference from an alternative

  1. negative
  2. no effect
  3. negative

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potassium · molecular: metabolites · Oryza sativa (rice)Positive and negative results

22 papers: 16 positive, 6 negative or no effect

15 papers in the same direction as this paper · 5 in the opposite direction · 1 reporting no difference from an alternative

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

18 papers more in this group

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phosphorus · molecular: metabolites · Oryza sativa (rice)Positive and negative results

34 papers: 26 positive, 8 negative or no effect

25 papers in the same direction as this paper · 8 in the opposite direction

  1. negative
  2. negative
  3. negative

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processing · molecular: metabolites · Oryza sativa (rice)Positive and negative results

57 papers: 48 positive, 9 negative or no effect

47 papers in the same direction as this paper · 8 in the opposite direction · 1 reporting no difference from an alternative

  1. negative
  2. negative
  3. negative

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

114 papers: 88 positive, 26 negative or no effect

87 papers in the same direction as this paper · 21 in the opposite direction · 5 reporting no difference from an alternative

  1. negative
  2. no effect
  3. negative

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fertilization · molecular: metabolites · Oryza sativa (rice)Positive and negative results

219 papers: 199 positive, 20 negative or no effect

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

  1. negative
  2. no effect
  3. negative

215 papers more in this group

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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

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

475 papers: 419 positive, 56 negative or no effect

418 papers in the same direction as this paper · 46 in the opposite direction · 10 reporting no difference from an alternative

  1. negative
  2. no effect
  3. no effect

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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.