Abstract
The addition of Cu at 2 and 4 kg/ha did not increase the yields of carrots, beets, onions, or rutabagas grown in soils normally used for these crops in Prince Edward Island. Leaf tissue Cu concentrations of these crops were found to be in the range of 6–14 ppm and generally were not affected by the added Cu. Key words: Tissue copper, vegetable yields, podzol soil
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Claims 6
Claim · model-written summary
Copper at 2 and 4 kg/ha did not increase carrot yields.
- Taxon
- carrots
Daucus carotae0 - Treatment
- Cu at 2 and 4 kg/hae0
- Outcome
- yieldse0
- Direction
- did not increasee0
- Setting
- Prince Edward Islande0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The addition of Cu at 2 and 4 kg/ha did not increase the yields of carrots, beets, onions, or rutabagas grown in soils normally used for these crops in Prince Edward Island”
Claim · model-written summary
Copper at 2 and 4 kg/ha did not increase beet yields.
- Taxon
- beets
Beta vulgarise0 - Treatment
- Cu at 2 and 4 kg/hae0
- Outcome
- yieldse0
- Direction
- did not increasee0
- Setting
- Prince Edward Islande0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The addition of Cu at 2 and 4 kg/ha did not increase the yields of carrots, beets, onions, or rutabagas grown in soils normally used for these crops in Prince Edward Island”
Claim · model-written summary
Copper at 2 and 4 kg/ha did not increase onion yields.
- Taxon
- onions
Allium cepae0 - Treatment
- Cu at 2 and 4 kg/hae0
- Outcome
- yieldse0
- Direction
- did not increasee0
- Setting
- Prince Edward Islande0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The addition of Cu at 2 and 4 kg/ha did not increase the yields of carrots, beets, onions, or rutabagas grown in soils normally used for these crops in Prince Edward Island”
Claim · model-written summary
Copper at 2 and 4 kg/ha did not increase rutabaga yields.
- Taxon
- rutabagas
Brassica napus subsp. rapiferae0 - Treatment
- Cu at 2 and 4 kg/hae0
- Outcome
- yieldse0
- Direction
- did not increasee0
- Setting
- Prince Edward Islande0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The addition of Cu at 2 and 4 kg/ha did not increase the yields of carrots, beets, onions, or rutabagas grown in soils normally used for these crops in Prince Edward Island”
Claim · model-written summary
Leaf tissue copper concentration across these vegetables ranged from 6 to 14 ppm.
Verbatim
e0“Leaf tissue Cu concentrations of these crops were found to be in the range of 6–14 ppm”
t0“VEGETABLE CROPS”
Claim · model-written summary
Added copper generally did not affect leaf tissue copper concentrations.
- Taxon
- VEGETABLE CROPSt0
- Organ / stage
- Leaf tissuee0
- Treatment
- added Cue0
- Outcome
- Cu concentrationse0
- Direction
- not affectede0
Not reportedComparator
Verbatim
e0“Leaf tissue Cu concentrations of these crops were found to be in the range of 6–14 ppm and generally were not affected by the added Cu”
t0“VEGETABLE CROPS”
The same questions in other papers
copper atom · yield · Daucus carota (carrot)Results differ
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- positive
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See all 7 papers →copper atom · yield · Brassica napus (oilseed rape)Results differ
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See all 9 papers →copper atom · yield · Allium cepa (onion)Results differ
2 papers in the same direction as this paper · 7 in the opposite direction
- positive
- positive
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See all 10 papers →copper atom · yield · Beta vulgaris (beet)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- no effect
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.