Abstract
Rice plants were grown on the soil of a pabby field where habitual occurrence of the "Akagare" disease was seen. Different conditions were given to the plants as regard to the temperature of the irrigation water and supply of potassium or starch to the soil. The results of the experiment are as follows:- (1) Depletion of potassium, supplying starch to the soil, and exposing the plant to warm irrigation water (36-39°C) without potassium supply, all caused retarded growth both in the top and in the root, resulting in increased affection by the disease. (2) Supplying starch to the soil increased the per cent content of FeO, and decreased the content of K2O, MnO and especially, soluble MnO in the plants. The soluble-N/protein-N ratio of the leaf blade was increased by the same treatment. (3) The Eh value of the expressed shoot sap was lowered both by depletion of potassium and by application of starch. (4) The occurrence of the disease seemed to be highly correlative to the decrease of K2O/N ratio in the leaf blade.
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Claims 9
Claim · model-written summary
Potassium depletion retarded shoot and root growth and increased disease affection.
- Taxon
- Rice plants
Oryza sativae0 - Treatment
- Depletion of potassiume1
- Outcome
- retarded growth both in the top and in the root, resulting in increased affection by the diseasee1
- Direction
- retardede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rice plants were grown”
e1“Depletion of potassium, supplying starch to the soil, and exposing the plant to warm irrigation water (36-39°C) without potassium supply, all caused retarded growth both in the top and in the root, resulting in increased affection by the disease”
Claim · model-written summary
Starch supplied to soil retarded growth and increased disease affection.
- Taxon
- Rice plantsOryza sativae0
- Treatment
- supplying starch to the soile1
- Outcome
- retarded growth both in the top and in the root, resulting in increased affection by the diseasee1
- Direction
- retardede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rice plants were grown”
e1“supplying starch to the soil, and exposing the plant to warm irrigation water (36-39°C) without potassium supply, all caused retarded growth both in the top and in the root, resulting in increased affection by the disease”
Claim · model-written summary
Warm irrigation without potassium retarded growth and increased disease affection.
- Taxon
- Rice plantsOryza sativae0
- Treatment
- warm irrigation water (36-39°C) without potassium supplye1
- Outcome
- retarded growth both in the top and in the root, resulting in increased affection by the diseasee1
- Direction
- retardede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rice plants were grown”
e1“exposing the plant to warm irrigation water (36-39°C) without potassium supply, all caused retarded growth both in the top and in the root, resulting in increased affection by the disease”
Claim · model-written summary
Starch application increased plant FeO content.
- Taxon
- Rice plantsOryza sativae0
- Treatment
- Supplying starch to the soile1
- Outcome
- per cent content of FeOe1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rice plants were grown”
e1“Supplying starch to the soil increased the per cent content of FeO”
Claim · model-written summary
Starch application decreased plant K2O, MnO and soluble MnO content.
- Taxon
- Rice plantsOryza sativae0
- Treatment
- Supplying starch to the soile1
- Outcome
- content of K2O, MnO and especially, soluble MnOe1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rice plants were grown”
e1“Supplying starch to the soil increased the per cent content of FeO, and decreased the content of K2O, MnO and especially, soluble MnO in the plants”
Claim · model-written summary
Starch application increased leaf blade soluble-N/protein-N ratio.
- Taxon
- Rice plantsOryza sativae0
- Organ / stage
- leaf bladee1
- Treatment
- Supplying starch to the soile2
- Outcome
- soluble-N/protein-N ratioe1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rice plants were grown”
e1“The soluble-N/protein-N ratio of the leaf blade was increased by the same treatment”
e2“Supplying starch to the soil increased”
Claim · model-written summary
Potassium depletion lowered shoot sap Eh.
- Taxon
- Rice plantsOryza sativae0
- Treatment
- depletion of potassiume1
- Outcome
- Eh value of the expressed shoot sape1
- Direction
- lowerede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rice plants were grown”
e1“The Eh value of the expressed shoot sap was lowered both by depletion of potassium and by application of starch”
Claim · model-written summary
Starch application lowered shoot sap Eh.
- Taxon
- Rice plantsOryza sativae0
- Treatment
- application of starche1
- Outcome
- Eh value of the expressed shoot sape1
- Direction
- lowerede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rice plants were grown”
e1“The Eh value of the expressed shoot sap was lowered both by depletion of potassium and by application of starch”
Claim · model-written summary
Disease occurrence correlated with lower leaf blade K2O/N ratio.
- Taxon
- Rice plantsOryza sativae0
- Organ / stage
- leaf bladee1
- Outcome
- occurrence of the diseasee1
- Qualifier
- decrease of K2O/N ratioe1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rice plants were grown”
e1“The occurrence of the disease seemed to be highly correlative to the decrease of K2O/N ratio in the leaf blade”
The same questions in other papers
potassium · growth · Oryza sativa (rice)Positive and negative results
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- negative
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- positive
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See all 291 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.