Abstract
Ammonium nitrate solution applied to the leaves of sugar-beet increased plant dry weight and uptake of nitrogen by the roots. Uptake of phosphorus by the roots of swedes, but not sugar-beet, grown with high phosphorus supply to the roots, was decreased by applying sodium phosphate solution to the leaves; uptake from a lower phosphorus supply to the roots was unaffected. Phosphorus applied to the leaves had no effect on dry weight. Potassium uptake by the roots of sugar-beet plants grown with high potassium supply to the roots was unaffected by painting the leaves with a potassium chloride solution, that of plants with an intermediate potassium supply was increased, and plants grown with a low supply to the roots absorbed almost all the available potassium so painting could not much increase uptake by the roots. Application of potassium to the leaves increased dry weight of plants with low or medium potassium supply to the roots and did not affect that of plants with a high potassium supply. The top: root ratio for phosphorus content in mg. per plant was greater for phosphorus absorbed via leaves than for phosphorus absorbed via roots. Increasing the phosphorus supply to the roots increased this ratio for phosphorus absorbed either via leaves or roots. Potassium absorbed by leaves was slightly more efficient in increasing dry weight than potassium absorbed at the same time by the root. A similar comparison was not possible for nitrogen or phosphorus. The results of these and previous experiments indicate that all the nitrogen and potassium and over 80 per cent. of the phosphorus applied to leaves was absorbed. The small amount of phosphorus remaining unabsorbed on the surface of the leaf was unaffected by phosphorus supply to the root.
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Claims 18
Claim · model-written summary
Foliar ammonium nitrate increased sugar-beet dry weight.
- Taxon
- sugar-beet
Beta vulgaris subsp. vulgarise0 - Treatment
- Ammonium nitrate solutione0
- Outcome
- plant dry weighte0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ammonium nitrate solution applied to the leaves of sugar-beet increased plant dry weight and uptake of nitrogen by the roots.”
Claim · model-written summary
Foliar ammonium nitrate increased sugar-beet root nitrogen uptake.
- Taxon
- sugar-beetBeta vulgaris subsp. vulgarise0
- Treatment
- Ammonium nitrate solutione0
- Outcome
- uptake of nitrogen by the rootse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ammonium nitrate solution applied to the leaves of sugar-beet increased plant dry weight and uptake of nitrogen by the roots.”
Claim · model-written summary
Foliar sodium phosphate decreased root phosphorus uptake in swedes at high root phosphorus supply.
- Taxon
- swedese0
- Treatment
- applying sodium phosphate solution to the leavese0
- Outcome
- Uptake of phosphorus by the rootse0
- Direction
- decreasede0
- Qualifier
- high phosphorus supply to the rootse0
Not reportedComparator
Verbatim
e0“Uptake of phosphorus by the roots of swedes, but not sugar-beet, grown with high phosphorus supply to the roots, was decreased by applying sodium phosphate solution to the leaves”
Claim · model-written summary
Foliar sodium phosphate did not decrease root phosphorus uptake in sugar-beet at high root phosphorus supply.
- Taxon
- sugar-beetBeta vulgaris subsp. vulgarise0
- Treatment
- applying sodium phosphate solution to the leavese0
- Outcome
- Uptake of phosphorus by the rootse0
- Qualifier
- high phosphorus supply to the rootse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Uptake of phosphorus by the roots of swedes, but not sugar-beet, grown with high phosphorus supply to the roots, was decreased by applying sodium phosphate solution to the leaves”
Claim · model-written summary
At lower root phosphorus supply, foliar phosphate left root phosphorus uptake unaffected.
- Taxon
- swedese1
- Treatment
- phosphoruse0
- Outcome
- uptakee0
- Direction
- unaffectede0
- Qualifier
- lower phosphorus supply to the rootse0
Not reportedComparator
Verbatim
e0“uptake from a lower phosphorus supply to the roots was unaffected.”
t0“The Effect of Applying a Nutrient in Leaf Sprays on the Absorption of the Same Nutrient by the Roots”
e1“Uptake of phosphorus by the roots of swedes, but not sugar-beet, grown with high phosphorus supply to the roots, was decreased by applying sodium phosphate solution to the leaves”
Claim · model-written summary
Foliar phosphorus did not affect dry weight.
Not reportedTaxonComparator
Verbatim
e0“Phosphorus applied to the leaves had no effect on dry weight.”
Claim · model-written summary
At high root potassium supply, foliar potassium chloride left root potassium uptake unaffected.
- Taxon
- sugar-beetBeta vulgaris subsp. vulgarise0
- Treatment
- painting the leaves with a potassium chloride solutione0
- Outcome
- Potassium uptake by the rootse0
- Direction
- unaffectede0
- Qualifier
- high potassium supply to the rootse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potassium uptake by the roots of sugar-beet plants grown with high potassium supply to the roots was unaffected by painting the leaves with a potassium chloride solution”
Claim · model-written summary
At intermediate root potassium supply, foliar potassium increased root potassium uptake.
- Taxon
- sugar-beetBeta vulgaris subsp. vulgarise1
- Treatment
- potassiume0
- Outcome
- that of plantse0
- Direction
- increasede0
- Qualifier
- intermediate potassium supplye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“that of plants with an intermediate potassium supply was increased”
t0“The Effect of Applying a Nutrient in Leaf Sprays on the Absorption of the Same Nutrient by the Roots”
e1“Ammonium nitrate solution applied to the leaves of sugar-beet increased plant dry weight and uptake of nitrogen by the roots.”
Claim · model-written summary
Plants at low root potassium supply absorbed almost all available potassium.
- Taxon
- sugar-beetBeta vulgaris subsp. vulgarise1
- Outcome
- absorbed almost all the available potassiume0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plants grown with a low supply to the roots absorbed almost all the available potassium”
t0“The Effect of Applying a Nutrient in Leaf Sprays on the Absorption of the Same Nutrient by the Roots”
e1“Ammonium nitrate solution applied to the leaves of sugar-beet increased plant dry weight and uptake of nitrogen by the roots.”
Claim · model-written summary
Foliar potassium increased dry weight at low or medium root potassium supply.
- Taxon
- sugar-beetBeta vulgaris subsp. vulgarise1
- Treatment
- Application of potassium to the leavese0
- Outcome
- dry weighte0
- Direction
- increasede0
- Qualifier
- low or medium potassium supply to the rootse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of potassium to the leaves increased dry weight of plants with low or medium potassium supply to the roots”
t0“The Effect of Applying a Nutrient in Leaf Sprays on the Absorption of the Same Nutrient by the Roots”
e1“Ammonium nitrate solution applied to the leaves of sugar-beet increased plant dry weight and uptake of nitrogen by the roots.”
Claim · model-written summary
Foliar potassium did not affect dry weight at high root potassium supply.
- Taxon
- sugar-beetBeta vulgaris subsp. vulgarise1
- Treatment
- potassiume0
- Outcome
- that of plantse0
- Direction
- did not affecte0
- Qualifier
- high potassium supplye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“did not affect that of plants with a high potassium supply”
t0“The Effect of Applying a Nutrient in Leaf Sprays on the Absorption of the Same Nutrient by the Roots”
e1“Ammonium nitrate solution applied to the leaves of sugar-beet increased plant dry weight and uptake of nitrogen by the roots.”
Claim · model-written summary
Leaf absorbed phosphorus had a greater top to root content ratio than root absorbed phosphorus.
- Outcome
- top: root ratio for phosphorus contente0
- Direction
- greatere0
- Comparator
- phosphorus absorbed via rootse0
Not reportedTaxon
Verbatim
e0“The top: root ratio for phosphorus content in mg. per plant was greater for phosphorus absorbed via leaves than for phosphorus absorbed via roots.”
Claim · model-written summary
Increasing root phosphorus supply increased the top to root phosphorus ratio for phosphorus absorbed via either route.
Not reportedTaxonComparator
Verbatim
e0“Increasing the phosphorus supply to the roots increased this ratio for phosphorus absorbed either via leaves or roots.”
Claim · model-written summary
Leaf absorbed potassium increased dry weight slightly more efficiently than root absorbed potassium.
Not reportedTaxon
Verbatim
e0“Potassium absorbed by leaves was slightly more efficient in increasing dry weight than potassium absorbed at the same time by the root.”
Claim · model-written summary
All foliar nitrogen was absorbed.
Not reportedTaxon
Verbatim
e0“all the nitrogen and potassium and over 80 per cent. of the phosphorus applied to leaves was absorbed”
Claim · model-written summary
All foliar potassium was absorbed.
Not reportedTaxon
Verbatim
e0“all the nitrogen and potassium and over 80 per cent. of the phosphorus applied to leaves was absorbed”
Claim · model-written summary
Over 80 per cent of foliar phosphorus was absorbed.
Not reportedTaxon
Verbatim
e0“over 80 per cent. of the phosphorus applied to leaves was absorbed”
Claim · model-written summary
Root phosphorus supply did not affect the small amount of unabsorbed phosphorus on leaf surfaces.
- Treatment
- phosphorus supply to the roote0
- Outcome
- phosphorus remaining unabsorbed on the surface of the leafe0
- Direction
- unaffectede0
Not reportedTaxon
Verbatim
e0“The small amount of phosphorus remaining unabsorbed on the surface of the leaf was unaffected by phosphorus supply to the root.”
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See all 40 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.