Abstract
The Dependence of the Yield of Spinach and of Some of its Constituents on Fertilisation 1. The increase in the spinach crop, caused by nitrogen was conditioned by the simultaneous application of potassium. 2. The increased growth of the spinach crop induced by increasing magnesium application did not decrease in spite of rising potassium applications. 3. The spinach crop height depended on the reciprocal of the Ca/Mg relation. Any displacement of the relation towards calcium caused an increase in the crop only with low levels of magnesium. Displacement towards magnesium gave the largest crop. 4. Doubling of the calcium application showed no Ca ++ and K + antagonism which affected the crop. 5. The increase of the ascorbic acid and carotene content caused by manganese and boron attained the highest value with a double application of these elements. 6. Increasing nitrogen application caused a rise in nitrate content. A threefold application of boron reduced this by 50%.
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Claims 9
Claim · model-written summary
Nitrogen increased spinach crop only with simultaneous potassium.
- Taxon
- spinach
Spinacia oleraceae0 - Treatment
- nitrogene0
- Outcome
- spinach crope0
- Direction
- increasee0
- Qualifier
- simultaneous application of potassiume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The increase in the spinach crop, caused by nitrogen was conditioned by the simultaneous application of potassium.”
Claim · model-written summary
Magnesium increased spinach growth despite rising potassium.
- Taxon
- spinachSpinacia oleraceae0
- Treatment
- increasing magnesium applicatione0
- Outcome
- growth of the spinach crope0
- Direction
- increasede0
- Qualifier
- rising potassium applicationse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The increased growth of the spinach crop induced by increasing magnesium application did not decrease in spite of rising potassium applications.”
Claim · model-written summary
A calcium shift increased crop only at low magnesium.
- Treatment
- displacement of the relation towards calciume0
- Outcome
- crope0
- Direction
- increasee0
- Qualifier
- low levels of magnesiume0
Not reportedTaxon
Verbatim
e0“Any displacement of the relation towards calcium caused an increase in the crop only with low levels of magnesium.”
Claim · model-written summary
A magnesium shift gave the largest crop.
Not reportedTaxon
Verbatim
e0“Displacement towards magnesium gave the largest crop.”
Claim · model-written summary
Doubling calcium showed no crop affecting calcium potassium antagonism.
Not reportedTaxonComparator
Verbatim
e0“Doubling of the calcium application showed no Ca ++ and K + antagonism which affected the crop.”
Claim · model-written summary
Double manganese and boron maximized ascorbic acid content.
Not reportedTaxonComparator
Verbatim
e0“The increase of the ascorbic acid and carotene content caused by manganese and boron attained the highest value with a double application of these elements.”
Claim · model-written summary
Double manganese and boron maximized carotene content.
- Treatment
- manganese and borone0
- Outcome
- carotene contente0
- Direction
- higheste0
- Qualifier
- double applicatione0
Not reportedTaxonComparator
Verbatim
e0“The increase of the ascorbic acid and carotene content caused by manganese and boron attained the highest value with a double application of these elements.”
Claim · model-written summary
Increasing nitrogen raised nitrate content.
Not reportedTaxonComparator
Verbatim
e0“Increasing nitrogen application caused a rise in nitrate content.”
Claim · model-written summary
Threefold boron application reduced nitrate content by 50%.
Not reportedTaxonComparator
Verbatim
e0“A threefold application of boron reduced this by 50%.”
The same questions in other papers
boron atom · quality: phytochemicals · Spinacia oleracea (spinach)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- negative
- positive
calcium atom · nutrient: content · Spinacia oleracea (spinach)Positive and negative results
1 paper in the same direction as this paper · 3 in the opposite direction
- positive
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- positive
1 paper more in this group
See all 5 papers →nitrogen · nutrient: content · Spinacia oleracea (spinach)Positive and negative results
13 papers in the same direction as this paper · 21 in the opposite direction
- positive
- positive
- positive
31 papers more in this group
See all 35 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.