Paper · 2012 · Crop Management

Effect of Planting Methods on Spring Canola (Brassica napus L.) Establishment and Yield in the Low‐Rainfall Region of the Pacific Northwest

Frank L. Young; Dan S. Long; J. R. Alldredge

6
claims
8
verbatim quotes
6
citations
1
research areas
—
Not open access

Abstract

Growers are becoming interested in producing canola ( Brassica napus or B. rapa ) in the dryland, wheat‐fallow region of the Pacific Northwest. Currently, agronomic research for spring canola in this region has not been initiated. This study evaluated the effect of no‐till planting methods on stand establishment, crop yield, and seed oil quantity of spring canola in Washington and Oregon in 2009 and 2010. The treatments included: double disk opener; broadcast; broadcast plus rolled; Kile opener; Cross‐Slot opener; and hoe opener (at Washington only). In this study, canola establishment was generally greatest with the double disk opener and least in the broadcast or broadcast plus rolled treatments at all four site‐years. Yield was least in the broadcast treatment and rolling broadcast seed increased yield only 50% of the time. In three out of four site‐years, canola planted with the various no‐till openers yielded higher than broadcast seed. The adoption of spring canola in the wheat‐fallow region of the Pacific Northwest would improve pest management strategies, diversify markets, and increase sustainability.

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The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 6

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Canola establishment was greatest with the double disk opener.

Treatment
double disk openere0
Outcome
canola establishmente0
Direction
greateste0
Comparator
broadcast or broadcast plus rolled treatmentse0
Setting
all four site‐yearse0

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

“canola establishment was generally greatest with the double disk opener and least in the broadcast or broadcast plus rolled treatments at all four site‐years.”

✓ located verbatim in the source · abstract, characters 572–730 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Canola establishment was least with broadcast or broadcast plus rolled planting.

Treatment
broadcast or broadcast plus rolled treatmentse0
Outcome
canola establishmente0
Direction
leaste0
Comparator
double disk openere0

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

“canola establishment was generally greatest with the double disk opener and least in the broadcast or broadcast plus rolled treatments at all four site‐years.”

✓ located verbatim in the source · abstract, characters 572–730 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Yield was least with broadcast planting.

Treatment
broadcast treatmente0
Outcome
Yielde0
Direction
leaste0

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

“Yield was least in the broadcast treatment”

✓ located verbatim in the source · abstract, characters 731–773 · show in text ↑
t0

“Canola”

✓ located verbatim in the source · title, characters 37–43 · show in text ↑
Intervention effectobservedoriginal resultmixedmeasured

Claim · model-written summary

Rolling broadcast seed increased yield in half of site-years.

Treatment
rolling broadcast seede0
Outcome
yielde0
Direction
increasede0
Value
50%e0
Comparator
broadcast seede0

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

“rolling broadcast seed increased yield only 50% of the time.”

✓ located verbatim in the source · abstract, characters 778–838 · show in text ↑
t0

“Canola”

✓ located verbatim in the source · title, characters 37–43 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

No-till openers yielded more than broadcast seeding in three of four site-years.

Treatment
various no‐till openerse0
Outcome
yieldede0
Direction
highere0
Value
three out of four site‐yearse0
Comparator
broadcast seede0

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

“In three out of four site‐years, canola planted with the various no‐till openers yielded higher than broadcast seed.”

✓ located verbatim in the source · abstract, characters 839–955 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors suggest adopting spring canola in the regional wheat-fallow system for management, markets, and sustainability.

Outcome
adoption of spring canolae0
Setting
Pacific Northweste0

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 adoption of spring canola in the wheat‐fallow region of the Pacific Northwest would improve pest management strategies, diversify markets, and increase sustainability.”

✓ located verbatim in the source · abstract, characters 956–1127 · show in text ↑

transplanting · growth · Brassica napus (oilseed rape)Positive and negative results

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

31 papers: 19 positive, 12 negative or no effect

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

50 papers: 42 positive, 8 negative or no effect

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

  1. no effect
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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.