Abstract
This study consists of two categories. In order to clarify the effect of elimination of nitrogen application at different growth stages on the degree of leaf senescence and the root activity, the first experiment was carried out under water culture conditions. The second one was aimed to investigate variation of characters and movement of mineral nutrients within one and the same hill after root systems of the plant were separated and exposed to two different environments. The results obtained were as follows. (1) The elimination of nitrogen application greatly affected the chlorophyll destruction of the excised leaf and reduced the root activity. (2) The elimination of nitrogen application resulted in a great retardation of the root activity both at the tillering stage and the stage of reduction division. The activity of the lower nodal roots were severely affected at the tillering stage while that of the upper nodal roots was mostly retarded after reduction division stage. (3) By dividing roots into two halves and exposing each one to different nitrogen leveles, it was found that tillers and their roots were closely related each other. It appeared that the roots distributed in a given root environment affected mainly the tillers connected with them. The movement of mineral nutrients among the tillers which connected different root systems within one and the same hill had being independent each others. (4) When different root environments were given to the plant, certain elements such as calcium, iron and manganese seeiried to be difficult to move from one tiller to another, while nitrogen, potassium, phosphorus and magnesium moved relatively easily each other.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 8
Claim · model-written summary
Nitrogen elimination affected chlorophyll destruction in excised rice leaves.
- Taxon
- Rice Plant
Oryza sativat0 - Treatment
- elimination of nitrogen applicatione0
- Outcome
- chlorophyll destruction of the excised leafe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Plant”
e0“The elimination of nitrogen application greatly affected the chlorophyll destruction of the excised leaf”
Claim · model-written summary
Nitrogen elimination reduced rice root activity.
- Taxon
- Rice PlantOryza sativat0
- Treatment
- elimination of nitrogen applicatione0
- Outcome
- root activitye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Plant”
e0“elimination of nitrogen application greatly affected the chlorophyll destruction of the excised leaf and reduced the root activity”
Claim · model-written summary
Nitrogen elimination retarded lower nodal root activity at tillering.
- Taxon
- Rice PlantOryza sativat0
- Organ / stage
- tillering stagee0
- Treatment
- elimination of nitrogen applicatione1
- Outcome
- activity of the lower nodal rootse0
- Direction
- retardatione1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Plant”
e0“The activity of the lower nodal roots were severely affected at the tillering stage”
e1“The elimination of nitrogen application resulted in a great retardation of the root activity both at the tillering stage and the stage of reduction division”
Claim · model-written summary
Nitrogen elimination retarded upper nodal root activity after reduction division.
- Taxon
- Rice PlantOryza sativat0
- Organ / stage
- reduction division stagee0
- Treatment
- elimination of nitrogen applicatione1
- Outcome
- upper nodal rootse0
- Direction
- retardede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Plant”
e0“that of the upper nodal roots was mostly retarded after reduction division stage”
e1“The elimination of nitrogen application resulted in a great retardation of the root activity”
Claim · model-written summary
Roots in a given environment mainly affected their connected tillers.
- Taxon
- Rice PlantOryza sativat0
- Organ / stage
- rootse0
- Outcome
- affected mainly the tillers connected with theme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Plant”
e0“the roots distributed in a given root environment affected mainly the tillers connected with them”
Claim · model-written summary
Mineral nutrient movement between tillers connected to separate roots was independent.
- Taxon
- Rice PlantOryza sativat0
- Outcome
- movement of mineral nutrients among the tillerse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Plant”
e0“The movement of mineral nutrients among the tillers which connected different root systems within one and the same hill had being independent each others”
Claim · model-written summary
Calcium, iron, and manganese seemed to move with difficulty between tillers under differing root environments.
- Taxon
- Rice PlantOryza sativat0
- Outcome
- calcium, iron and manganese seeiried to be difficult to move from one tiller to anothere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Plant”
e0“certain elements such as calcium, iron and manganese seeiried to be difficult to move from one tiller to another”
Claim · model-written summary
Nitrogen, potassium, phosphorus, and magnesium moved relatively easily between tillers.
- Taxon
- Rice PlantOryza sativat0
- Outcome
- nitrogen, potassium, phosphorus and magnesium moved relatively easily each othere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice Plant”
e0“nitrogen, potassium, phosphorus and magnesium moved relatively easily each other”
The same questions in other papers
nitrogen · growth · Oryza sativa (rice)Positive and negative results
108 papers in the same direction as this paper · 402 in the opposite direction
- positive
- positive
- positive
507 papers more in this group
See all 511 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.