Paper · 2002 · South African Journal of Plant and Soil

The efficacy of liquid seaweed extract on the yield of canola plants

M. I. Ferreira; A. F. Lourens

4
claims
5
verbatim quotes
31
citations
1
research areas
—
Not open access

Abstract

The efficacy of auxin/cytokinin (Kelpak) on its own and in a mixture with the herbicide clopyralid (Lontrel 100), for post-emergence application at various growth stages in canola (Brassica napus) was assessed. A Kelpak foliar application at 2 I ha−1 applied at the four leaf stage gave a significant increase in yield at Langgewens in 1999 compared to the control. At Tygerhoek, Kelpak at 2 I ha−1 significantly increased canola yields when applied at either the three leaf or five leaf growth stage of canola, but the highest yield, was obtained by Kelpak at 2 I ha−1 at the three leaf average growing stage of canola.

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Claims 4

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Kelpak at the four leaf stage significantly increased yield at Langgewens in 1999 versus control.

Treatment
Kelpak foliar application at 2 I ha−1 applied at the four leaf stagee0
Outcome
yielde0
Direction
increasee0
Comparator
the controle0
Setting
Langgewense0

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

Brassica napus var. napus
Brassica napus var. napus · Taxoncontri from Yonezawa-Shi, Yamagata, Japan · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“A Kelpak foliar application at 2 I ha−1 applied at the four leaf stage gave a significant increase in yield at Langgewens in 1999 compared to the control”

✓ located verbatim in the source · abstract, characters 211–364 · show in text ↑
t0

“canola plants”

✓ located verbatim in the source · title, characters 55–68 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Kelpak at the three leaf stage significantly increased canola yield at Tygerhoek.

Organ / stage
three leafe0
Treatment
Kelpak at 2 I ha−1e0
Outcome
canola yieldse0
Direction
increasede0
Setting
Tygerhoeke0

Not reportedComparator

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

Brassica napus var. napus
Brassica napus var. napus · Taxoncontri from Yonezawa-Shi, Yamagata, Japan · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“At Tygerhoek, Kelpak at 2 I ha−1 significantly increased canola yields when applied at either the three leaf or five leaf growth stage of canola”

✓ located verbatim in the source · abstract, characters 366–510 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Kelpak at the five leaf stage significantly increased canola yield at Tygerhoek.

Organ / stage
five leafe0
Treatment
Kelpak at 2 I ha−1e0
Outcome
canola yieldse0
Direction
increasede0
Setting
Tygerhoeke0

Not reportedComparator

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

Brassica napus var. napus
Brassica napus var. napus · Taxoncontri from Yonezawa-Shi, Yamagata, Japan · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“At Tygerhoek, Kelpak at 2 I ha−1 significantly increased canola yields when applied at either the three leaf or five leaf growth stage of canola”

✓ located verbatim in the source · abstract, characters 366–510 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

The highest Tygerhoek canola yield occurred with Kelpak at the three leaf average growing stage.

Treatment
Kelpak at 2 I ha−1 at the three leaf average growing stagee0
Outcome
yielde0
Direction
higheste0

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

Brassica napus var. napus
Brassica napus var. napus · Taxoncontri from Yonezawa-Shi, Yamagata, Japan · CC BY-SA 2.0 · Wikimedia Commons ↗

Verbatim

e0

“the highest yield, was obtained by Kelpak at 2 I ha−1 at the three leaf average growing stage of canola”

✓ located verbatim in the source · abstract, characters 516–619 · show in text ↑

application · yield · Brassica napus (oilseed rape)Positive and negative results

93 papers: 85 positive, 8 negative or no effect

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

  1. negative
  2. negative
  3. no effect

89 papers more in this group

See all 93 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.