Abstract
Potential use of preharvest applications of glyphosate in canola (Brassica rapa L.) in western Canada both as a harvest aid and to control weeds prompted this study. Experiments were conducted from 1988 to 1990 at four locations in the region to document the effectiveness of preharvest applications of glyphosate to enhance canola seed and foliage drydown and to measure the effect of such applications on seed yield and quality. Glyphosate was applied in early August to early September at rates of 0.45, 0.90 and 1.70 kg acid equivalent ha −1 to canola with seed moisture contents ranging from 79 to 12%. Seed and foliage moisture drydown were not enhanced by glyphosate treatment. Glyphosate treatments generally had little or no effect on canola seed yields, seed weight, seed germination, green seed content or oil content except when applied when the pods were green and when seed moisture contents were high. Seed/pod moisture was not a reliable indicator of stage of canola development and thus, should not be used alone as an indicator of when preharvest applications of glyphosate can be applied to canola without decreasing seed yield and quality. Key words: Glyphosate, canola, Brassica rapa L., preharvest application, desiccation, seed quality
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
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
Claim · model-written summary
Glyphosate treatment did not enhance seed or foliage moisture drydown in canola.
- Taxon
- canola
.jpg?width=60)
Brassica napus var. napuse0 - Treatment
- glyphosate treatmente4
- Outcome
- Seed and foliage moisture drydowne4
- Direction
- not enhancede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Potential use of preharvest applications of glyphosate in canola (Brassica rapa L.)”
e4“Seed and foliage moisture drydown were not enhanced by glyphosate treatment”
Claim · model-written summary
Glyphosate treatments had little or no effect on canola seed yield, seed weight and seed germination.
- Taxon
- canolaBrassica napus var. napuse7
- Treatment
- Glyphosate treatmentse7
- Outcome
- seed yields, seed weight, seed germinatione7
- Direction
- little or no effecte7
- Qualifier
- generallye7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Glyphosate treatments generally had little or no effect on canola seed yields, seed weight, seed germination, green seed content or oil content except when applied when the pods were green and when seed moisture contents were high”
Claim · model-written summary
Glyphosate treatments had little or no effect on canola green seed content or oil content.
- Taxon
- canolaBrassica napus var. napuse7
- Treatment
- Glyphosate treatmentse7
- Outcome
- green seed content or oil contente7
- Direction
- little or no effecte7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Glyphosate treatments generally had little or no effect on canola seed yields, seed weight, seed germination, green seed content or oil content except when applied when the pods were green and when seed moisture contents were high”
Claim · model-written summary
Glyphosate applied when pods were green and seed moisture was high affected canola seed yield, seed weight, seed germination, green seed content and oil content.
- Taxon
- canolaBrassica napus var. napuse7
- Treatment
- applied when the pods were green and when seed moisture contents were highe7
- Outcome
- seed yields, seed weight, seed germination, green seed content or oil contente7
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Glyphosate treatments generally had little or no effect on canola seed yields, seed weight, seed germination, green seed content or oil content except when applied when the pods were green and when seed moisture contents were high”
Claim · model-written summary
Seed/pod moisture was not a reliable indicator of the stage of canola development.
- Taxon
- canolaBrassica napus var. napuse5
- Outcome
- reliable indicator of stage of canola developmente5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Seed/pod moisture was not a reliable indicator of stage of canola development”
Claim · model-written summary
Seed/pod moisture should not be used alone to decide when glyphosate can be applied to canola without decreasing yield and quality.
- Taxon
- canolaBrassica napus var. napuse6
- Outcome
- indicator of when preharvest applications of glyphosate can be appliede6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“should not be used alone as an indicator of when preharvest applications of glyphosate can be applied to canola without decreasing seed yield and quality”
The same questions in other papers
glyphosate · quality: oil · Brassica napus (oilseed rape)Results differ
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- negative
glyphosate · yield · Brassica napus (oilseed rape)Results differ
2 papers in the same direction as this paper · 6 in the opposite direction
- positive
- positive
- positive
5 papers more in this group
See all 9 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.