Abstract
Plants of carrot, lettuce, and pepper were grown in sand cultures receiving either a complete nutrient solution or one deficient in N, P, K, or Ca. An effort was made to produce severe deficiency, but not to a point at which no seeds would be produced. Plants showed various deficiency symptoms, including necrosis of the growing tips, with calcium deficiency, and necrotic spots along the leaf margins in the case of potassium deficiency. Seed yields were always depressed by low N, P, K, or Ca treatments. Percentage of normal seeds was depressed by low N, K, or Ca, but not by low P. At harvest, seeds from low Nand P treatments usually showed the same germination as that of seeds receiving complete solution. However, K deficiency resulted in lower germination in some experiments, as did Ca deficiency in carrots and peppers. In storage, seeds from low K and Ca treatments declined in germination faster than did seeds from the complete-solution treatments.
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Claims 17
Claim · model-written summary
In carrot, lettuce and pepper, calcium deficiency produced necrosis of the growing tips.
- Taxon
- carrot, lettuce, and peppere1
- Treatment
- calcium deficiencye0
- Outcome
- necrosis of the growing tipse0
- Comparator
- complete nutrient solutione1
Not reportedDirection
Verbatim
e0“Plants showed various deficiency symptoms, including necrosis of the growing tips, with calcium deficiency, and necrotic spots along the leaf margins in the case of potassium deficiency.”
e1“Plants of carrot, lettuce, and pepper were grown in sand cultures receiving either a complete nutrient solution or one deficient in N, P, K, or Ca.”
Claim · model-written summary
In carrot, lettuce and pepper, potassium deficiency produced necrotic spots along the leaf margins.
- Taxon
- carrot, lettuce, and peppere1
- Treatment
- potassium deficiencye0
- Outcome
- necrotic spots along the leaf marginse0
- Comparator
- complete nutrient solutione1
Not reportedDirection
Verbatim
e0“Plants showed various deficiency symptoms, including necrosis of the growing tips, with calcium deficiency, and necrotic spots along the leaf margins in the case of potassium deficiency.”
e1“Plants of carrot, lettuce, and pepper were grown in sand cultures receiving either a complete nutrient solution or one deficient in N, P, K, or Ca.”
Claim · model-written summary
Seed yield of carrot, lettuce and pepper was depressed under low N.
Verbatim
e0“Seed yields were always depressed by low N, P, K, or Ca treatments.”
e1“Plants of carrot, lettuce, and pepper were grown in sand cultures receiving either a complete nutrient solution or one deficient in N, P, K, or Ca.”
Claim · model-written summary
Seed yield of carrot, lettuce and pepper was depressed under P.
Verbatim
e0“Seed yields were always depressed by low N, P, K, or Ca treatments.”
e1“Plants of carrot, lettuce, and pepper were grown in sand cultures receiving either a complete nutrient solution or one deficient in N, P, K, or Ca.”
Claim · model-written summary
Seed yield of carrot, lettuce and pepper was depressed under K.
Verbatim
e0“Seed yields were always depressed by low N, P, K, or Ca treatments.”
e1“Plants of carrot, lettuce, and pepper were grown in sand cultures receiving either a complete nutrient solution or one deficient in N, P, K, or Ca.”
Claim · model-written summary
Seed yield of carrot, lettuce and pepper was depressed under Ca treatments.
Verbatim
e0“Seed yields were always depressed by low N, P, K, or Ca treatments.”
e1“Plants of carrot, lettuce, and pepper were grown in sand cultures receiving either a complete nutrient solution or one deficient in N, P, K, or Ca.”
Claim · model-written summary
The percentage of normal seeds was depressed by low N.
- Taxon
- carrot, lettuce, and peppere1
- Treatment
- low Ne0
- Outcome
- Percentage of normal seedse0
- Direction
- depressede0
Not reportedComparator
Verbatim
e0“Percentage of normal seeds was depressed by low N, K, or Ca, but not by low P.”
e1“Plants of carrot, lettuce, and pepper were grown”
Claim · model-written summary
The percentage of normal seeds was depressed by K.
- Taxon
- carrot, lettuce, and peppere1
- Treatment
- Ke0
- Outcome
- Percentage of normal seedse0
- Direction
- depressede0
Not reportedComparator
Verbatim
e0“Percentage of normal seeds was depressed by low N, K, or Ca, but not by low P.”
e1“Plants of carrot, lettuce, and pepper were grown”
Claim · model-written summary
The percentage of normal seeds was depressed by Ca.
- Taxon
- carrot, lettuce, and peppere1
- Treatment
- Cae0
- Outcome
- Percentage of normal seedse0
- Direction
- depressede0
Not reportedComparator
Verbatim
e0“Percentage of normal seeds was depressed by low N, K, or Ca, but not by low P.”
e1“Plants of carrot, lettuce, and pepper were grown”
Claim · model-written summary
Low P did not depress the percentage of normal seeds.
Not reportedComparator
Verbatim
e0“Percentage of normal seeds was depressed by low N, K, or Ca, but not by low P.”
e1“Plants of carrot, lettuce, and pepper were grown”
Claim · model-written summary
At harvest, seed germination under low N was usually the same as complete solution.
Verbatim
e0“At harvest, seeds from low Nand P treatments usually showed the same germination as that of seeds receiving complete solution.”
e1“Plants of carrot, lettuce, and pepper were grown”
Claim · model-written summary
At harvest, seed germination under P treatments was usually the same as complete solution.
Verbatim
e0“At harvest, seeds from low Nand P treatments usually showed the same germination as that of seeds receiving complete solution.”
e1“Plants of carrot, lettuce, and pepper were grown”
Claim · model-written summary
K deficiency lowered germination in some experiments.
- Taxon
- carrot, lettuce, and peppere1
- Treatment
- K deficiencye0
- Outcome
- germinatione0
- Direction
- lowere0
- Qualifier
- in some experimentse0
Not reportedComparator
Verbatim
e0“However, K deficiency resulted in lower germination in some experiments, as did Ca deficiency in carrots and peppers.”
e1“Plants of carrot, lettuce, and pepper were grown”
Claim · model-written summary
Ca deficiency lowered germination in carrots.
- Taxon
- carrots
Daucus carotae0 - Treatment
- Ca deficiencye0
- Outcome
- germinatione0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, K deficiency resulted in lower germination in some experiments, as did Ca deficiency in carrots and peppers.”
Claim · model-written summary
Ca deficiency lowered germination in peppers.
CapsicumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, K deficiency resulted in lower germination in some experiments, as did Ca deficiency in carrots and peppers.”
Claim · model-written summary
Stored seeds under low K declined in germination faster than complete solution.
Verbatim
e0“In storage, seeds from low K and Ca treatments declined in germination faster than did seeds from the complete-solution treatments.”
e1“Plants of carrot, lettuce, and pepper were grown”
Claim · model-written summary
Stored seeds under Ca treatments declined in germination faster than complete solution.
Verbatim
e0“In storage, seeds from low K and Ca treatments declined in germination faster than did seeds from the complete-solution treatments.”
e1“Plants of carrot, lettuce, and pepper were grown”
The same questions in other papers
calcium atom · growth · Capsicum (peppers)Results agree
2 papers in the same direction as this paper
This paper is about lacking the nutrient, so it counts the other way round here.
- positive
- positive
calcium atom · growth · Daucus carota (carrot)Results agree
3 papers in the same direction as this paper
This paper is about lacking the nutrient, so it counts the other way round here.
- positive
- positive
- positive
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.