Abstract
Sand‐culture experiments with the radish demonstrated that the optimum concentrations of nitrogen for root development were the highest employed, 32.96 and 65.92 p.p.m. Deficiency of nitrogen led to poor growth and to a characteristic outlining of the cotyledons in red, with red petioles. As with the carrot and turnip, a low concentration of available phosphorus, here 2.05‐4.09 p.p.m., gave the best root growth; and a marketable radish was obtained with so little as 0.10 p.p.m., suggesting that the relatively large radish seed contains a considerable quantity of phosphorus. The highest concentration of potassium used, 22.44 p.p.m., yielded the largest roots, and a diminution in this amount led to loss of yield and eventually to serious scorch of the foliage. There is possibly some boron in the radish seed; for though absence of this from an otherwise satisfactory solution resulted in diminished yields, the foliage was normal in appearance, and the radish of eatable size; the radishes apparently lacked ability to swell.
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Claims 7
Claim · model-written summary
The highest nitrogen concentrations gave optimal radish root development.
- Taxon
- radish
Raphanus sativuse0 - Treatment
- nitrogene0
- Outcome
- root developmente0
- Direction
- optimume0
- Value
- 32.96 and 65.92 p.p.m.e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sand‐culture experiments with the radish demonstrated that the optimum concentrations of nitrogen for root development were the highest employed, 32.96 and 65.92 p.p.m.”
Claim · model-written summary
Nitrogen deficiency caused poor radish growth and red cotyledon outlines and petioles.
- Taxon
- radishRaphanus sativust0
- Treatment
- Deficiency of nitrogene0
- Outcome
- poor growth and to a characteristic outlining of the cotyledons in red, with red petiolese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Deficiency of nitrogen led to poor growth and to a characteristic outlining of the cotyledons in red, with red petioles.”
t0“radish”
Claim · model-written summary
Low phosphorus concentration produced the best radish root growth.
- Taxon
- radishRaphanus sativust0
- Treatment
- low concentration of available phosphoruse0
- Outcome
- root growthe0
- Direction
- beste0
- Value
- 2.05‐4.09 p.p.m.e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a low concentration of available phosphorus, here 2.05‐4.09 p.p.m., gave the best root growth”
t0“radish”
Claim · model-written summary
A marketable radish was produced at 0.10 p.p.m. available phosphorus.
- Taxon
- radishRaphanus sativuse0
- Outcome
- marketable radishe0
- Value
- 0.10 p.p.m.e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a marketable radish was obtained with so little as 0.10 p.p.m.”
Claim · model-written summary
The highest potassium concentration gave the largest radish roots.
- Taxon
- radishRaphanus sativust0
- Treatment
- potassiume0
- Outcome
- largest rootse0
- Direction
- largeste0
- Value
- 22.44 p.p.m.e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest concentration of potassium used, 22.44 p.p.m., yielded the largest roots”
t0“radish”
Claim · model-written summary
Reducing potassium reduced radish yield and eventually scorched foliage.
- Taxon
- radishRaphanus sativust0
- Treatment
- a diminution in this amounte0
- Outcome
- loss of yield and eventually to serious scorch of the foliagee0
- Direction
- losse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a diminution in this amount led to loss of yield and eventually to serious scorch of the foliage”
t0“radish”
Claim · model-written summary
Omitting boron reduced radish yield, while foliage appeared normal and roots remained edible.
- Taxon
- radishRaphanus sativuse0
- Treatment
- absence of thise0
- Outcome
- yieldse0
- Direction
- diminishede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“absence of this from an otherwise satisfactory solution resulted in diminished yields, the foliage was normal in appearance, and the radish of eatable size”
The same questions in other papers
phosphorus · growth · Raphanus sativus (radish)Positive and negative results
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- negative
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See all 10 papers →nitrogen · growth · Raphanus sativus (radish)Positive and negative results
14 papers in the same direction as this paper · 6 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- no effect
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See all 22 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.