Paper · 2016 · Revista Brasileira de Engenharia Agrícola e Ambiental

Rice grain yield as affected by subsoiling, compaction on sowing furrow and seed treatment

Veneraldo Pinheiro; Luís F. Stone; José A. F. Barrigossi

4
claims
4
verbatim quotes
5
citations
1
research areas
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Open access · cc-by

Abstract

ABSTRACT This study aimed to determine the effects of subsoiling, compaction on sowing furrow and seed treatments with insecticides on the grain yield of upland rice cultivated under no-tillage. Two experiments were carried out, one in an area with and the other in an area without subsoiling, in which five seed treatments combined with five compaction pressures on the sowing furrow were compared in a randomized block design, in a factorial scheme, with three replicates. The seed treatments were: T0 - without treatment, T1 - imidacloprid + thiodicarb, T2 - thiamethoxam, T3 - carbofuran, and T4 - fipronil + pyraclostrobin + thiophanate methyl. The compaction pressures were: 25, 42, 126, 268 and 366 kPa. Subsoiling positively affected rice yield in the presence of higher compaction pressures on the sowing furrow. Seed treatment was effective at increasing rice grain yield only at the lowest compaction pressures. Rice yield showed quadratic response to compaction on the sowing furrow, with maximum values obtained at pressures ranging from 238.5 to 280.3 kPa.

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Claims 4

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Subsoiling improved rice yield at high furrow compaction.

Treatment
Subsoilinge0
Outcome
rice yielde0
Direction
positively affectede0
Qualifier
higher compaction pressures on the sowing furrowe0

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

“Subsoiling positively affected rice yield in the presence of higher compaction pressures on the sowing furrow”

✓ located verbatim in the source · abstract, characters 711–820 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Seed treatment increased rice grain yield only at the lowest compaction pressures.

Treatment
Seed treatmente0
Outcome
rice grain yielde0
Direction
increasinge0
Qualifier
only at the lowest compaction pressurese0

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

“Seed treatment was effective at increasing rice grain yield only at the lowest compaction pressures”

✓ located verbatim in the source · abstract, characters 822–921 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Rice yield responded quadratically to furrow compaction.

Treatment
compaction on the sowing furrowe0
Outcome
Rice yielde0

Not reportedDirection

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 yield showed quadratic response to compaction on the sowing furrow”

✓ located verbatim in the source · abstract, characters 923–994 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Maximum rice yield occurred at 238.5 to 280.3 kPa compaction.

Outcome
Rice yielde0
Direction
maximume0
Value
238.5 to 280.3 kPae0

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 yield showed quadratic response to compaction on the sowing furrow, with maximum values obtained at pressures ranging from 238.5 to 280.3 kPa”

✓ located verbatim in the source · abstract, characters 923–1069 · show in text ↑

seed treatment · yield · Oryza sativa (rice)Positive and negative results

166 papers: 159 positive, 7 negative or no effect

158 papers in the same direction as this paper · 6 in the opposite direction · 1 reporting no difference from an alternative

  1. positive
  2. no effect
  3. no effect

162 papers more in this group

See all 166 papers →

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

729 papers: 587 positive, 142 negative or no effect

586 papers in the same direction as this paper · 115 in the opposite direction · 27 reporting no difference from an alternative

  1. positive
  2. negative
  3. negative

725 papers more in this group

See all 729 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.