Paper · 1963 · Canadian Journal of Plant Science

THE EFFECT OF VARYING ROW SPACINGS ON THE AGRONOMIC AND QUALITY CHARACTERISTICS OF CEREALS AND FLAX

L. B. Siemens

14
claims
14
verbatim quotes
8
citations
2
research areas
—
Not open access

Abstract

During a 3-year study (1957–1959) at three Manitoba locations, agronomic and quality characteristics of Selkirk wheat, Garry oats, Swan barley and Raja flax were studied when crops were seeded in rows spaced 6, 12, 18, 24 and 30 inches apart. Within crops the same seedling rate per row was used for all spacings.A row spacings increased from 6 to 30 inches, yields of all crops gradually declined whereas tillering and seed return increased. The 1000-kernel weight of barley increased substantially with wider row spacings, but in wheat and flax the lowest 1000-kernel weights were recorded at the widest spacing. The kernel weight of oats and the bushel weight of all crops were not affected noticeably by row spacing. Protein content of wheat at 30-inch spacing averaged 3.2 per cent higher than wheat at 6-inch spacing. Protein in barley and flax also appeared to increase at wider row spacings, but not as sharply as in wheat.Average soil moisture content between 30-inch flax rows was higher at the time of boll formation than between 6- and 18-inch rows. A similar trend was found in wheat at time of heading.Wheat variety by spacing interactions was studied in one test in which Lerma, Lee, Thatcher and Selkirk wheats were seeded in rows spaced 6, 12, 18, 24 and 30 inches apart. No significant interactions were observed in tillering and protein content, whereas interactions in yield and 1000-kernel weights were highly significant.

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Claims 14

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Yields of all crops declined gradually as row spacing widened from 6 to 30 inches.

Taxon
all cropse0
Treatment
row spacings increased from 6 to 30 inchese0
Outcome
yieldse0
Direction
declinede0

Not reportedComparator

Verbatim

e0

“A row spacings increased from 6 to 30 inches, yields of all crops gradually declined whereas tillering and seed return increased”

✓ located verbatim in the source · abstract, characters 313–441 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Tillering and seed return increased as row spacing widened from 6 to 30 inches.

Taxon
all cropse0
Treatment
row spacings increased from 6 to 30 inchese0
Outcome
tillering and seed returne0
Direction
increasede0

Not reportedComparator

Verbatim

e0

“A row spacings increased from 6 to 30 inches, yields of all crops gradually declined whereas tillering and seed return increased”

✓ located verbatim in the source · abstract, characters 313–441 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The 1000-kernel weight of barley increased substantially with wider row spacings.

Treatment
wider row spacingse1
Outcome
1000-kernel weighte1
Direction
increased substantiallye1

Not reportedComparator

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

Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e1

“The 1000-kernel weight of barley increased substantially with wider row spacings, but in wheat and flax the lowest 1000-kernel weights were recorded at the widest spacing”

✓ located verbatim in the source · abstract, characters 443–613 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

In wheat the lowest 1000-kernel weight was recorded at the widest row spacing.

Treatment
widest spacinge1
Outcome
1000-kernel weighte1
Direction
loweste1

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“The 1000-kernel weight of barley increased substantially with wider row spacings, but in wheat and flax the lowest 1000-kernel weights were recorded at the widest spacing”

✓ located verbatim in the source · abstract, characters 443–613 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

In flax the lowest 1000-kernel weight was recorded at the widest row spacing.

Treatment
widest spacinge1
Outcome
1000-kernel weighte1
Direction
loweste1

Not reportedComparator

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

Linum usitatissimum
Linum usitatissimum · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“The 1000-kernel weight of barley increased substantially with wider row spacings, but in wheat and flax the lowest 1000-kernel weights were recorded at the widest spacing”

✓ located verbatim in the source · abstract, characters 443–613 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Protein content of wheat at 30-inch spacing was 3.2 per cent higher than at 6-inch spacing.

Treatment
30-inch spacinge2
Outcome
Protein contente2
Direction
highere2
Value
3.2 per cente2
Comparator
6-inch spacinge2

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e2

“Protein content of wheat at 30-inch spacing averaged 3.2 per cent higher than wheat at 6-inch spacing”

✓ located verbatim in the source · abstract, characters 721–822 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Protein in barley increased at wider row spacings, though less sharply than in wheat.

Treatment
wider row spacingse3
Outcome
Proteine3
Direction
increasee3

Not reportedComparator

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

Hordeum vulgare
Hordeum vulgare · TaxonJackyM59 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e3

“Protein in barley and flax also appeared to increase at wider row spacings, but not as sharply as in wheat”

✓ located verbatim in the source · abstract, characters 824–930 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Protein in flax increased at wider row spacings, though less sharply than in wheat.

Treatment
wider row spacingse3
Outcome
Proteine3
Direction
increasee3

Not reportedComparator

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

Linum usitatissimum
Linum usitatissimum · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e3

“Protein in barley and flax also appeared to increase at wider row spacings, but not as sharply as in wheat”

✓ located verbatim in the source · abstract, characters 824–930 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Average soil moisture between 30-inch flax rows was higher at boll formation than between 6- and 18-inch rows.

Organ / stage
boll formatione4
Treatment
30-inch flax rowse4
Outcome
soil moisture contente4
Direction
highere4
Comparator
6- and 18-inch rowse4

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

Linum usitatissimum
Linum usitatissimum · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e4

“Average soil moisture content between 30-inch flax rows was higher at the time of boll formation than between 6- and 18-inch rows.A similar trend was found in wheat at time of heading”

✓ located after whitespace/quote normalisation · abstract, characters 931–1115 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

A similar soil moisture trend was found in wheat at heading.

Organ / stage
time of headinge4
Treatment
30-inch flax rowse4
Outcome
soil moisture contente4
Direction
similar trende4

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e4

“Average soil moisture content between 30-inch flax rows was higher at the time of boll formation than between 6- and 18-inch rows.A similar trend was found in wheat at time of heading”

✓ located after whitespace/quote normalisation · abstract, characters 931–1115 · show in text ↑
Observationobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Variety by spacing interactions were not significant for tillering and protein content in wheat.

Outcome
tillering and protein contente5

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e5

“Wheat variety by spacing interactions was studied in one test in which Lerma, Lee, Thatcher and Selkirk wheats were seeded in rows spaced 6, 12, 18, 24 and 30 inches apart. No significant interactions were observed in tillering and protein content, whereas interactions in yield and 1000-kernel weights were highly significant”

✓ located verbatim in the source · abstract, characters 1116–1442 · show in text ↑
Observationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Variety by spacing interactions were highly significant for yield and 1000-kernel weight in wheat.

Outcome
interactions in yield and 1000-kernel weightse5
Qualifier
highly significante5

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e5

“Wheat variety by spacing interactions was studied in one test in which Lerma, Lee, Thatcher and Selkirk wheats were seeded in rows spaced 6, 12, 18, 24 and 30 inches apart. No significant interactions were observed in tillering and protein content, whereas interactions in yield and 1000-kernel weights were highly significant”

✓ located verbatim in the source · abstract, characters 1116–1442 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Row spacing did not noticeably affect kernel weight of oats.

Treatment
row spacinge6
Outcome
kernel weighte6
Direction
not affectede6

Not reportedComparator

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

Avena sativa
Avena sativa · TaxonSendelbach ( talk ) · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e6

“The kernel weight of oats and the bushel weight of all crops were not affected noticeably by row spacing”

✓ located verbatim in the source · abstract, characters 615–719 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Row spacing did not noticeably affect bushel weight of all crops.

Taxon
all cropse6
Treatment
row spacinge6
Outcome
bushel weighte6
Direction
not affectede6

Not reportedComparator

Verbatim

e6

“The kernel weight of oats and the bushel weight of all crops were not affected noticeably by row spacing”

✓ located verbatim in the source · abstract, characters 615–719 · show in text ↑

density · quality: protein · Triticum aestivum (wheat)Positive and negative results

35 papers: 19 positive, 16 negative or no effect

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

  1. negative
  2. negative
  3. negative

31 papers more in this group

See all 35 papers →

density · yield · Linum usitatissimum (flax)Positive and negative results

45 papers: 30 positive, 15 negative or no effect

14 papers in the same direction as this paper · 30 in the opposite direction

  1. positive
  2. positive
  3. positive

41 papers more in this group

See all 45 papers →

density · yield · Avena sativa (oats)Positive and negative results

54 papers: 29 positive, 25 negative or no effect

24 papers in the same direction as this paper · 29 in the opposite direction

  1. positive
  2. positive
  3. positive

50 papers more in this group

See all 54 papers →

density · yield · Triticum aestivum (wheat)Positive and negative results

498 papers: 376 positive, 122 negative or no effect

121 papers in the same direction as this paper · 376 in the opposite direction

  1. no effect
  2. positive
  3. positive

494 papers more in this group

See all 498 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.