Abstract
1. The experiment was carried on the spacing (square of 50, 25, 12.5, 6.25 cm, respectively) combined with or without the restriction of root area (alike to the surface area and its 1/4, 1/16, 1/64) using bottomless frame-work (20cm depth) board plastic materials. The aim of experiment was to clarify the reaction of the plant to the restriction of growing sphere, and special emphasis was laid on the growth and function of root. Results obtained were as follows: 2. Under the condition of denser spacing, the plant increased in number of primary roots per stem, on the other hand, decreased in their weight per unit number. The rot system was distributed shallowly under those conditions. 3. The activity of root, in terms of the capacity to oxidize α-naphthylamine, was depressed either by denser spacing or by stronger restriction of root area. 4. The oxidation-reduction potential of soil in root area was also lowered by denser spacing. 5. The content of mineral nutrients in rice plant was decreased by denser spacing or stronger restriction of root area, especially, that of potassium in either top or root was remarkably decreased by these conditions at later stage of growth. 6. Root of rice plant grown under denser spacing is characterized to distribute shallowly and to be easily depressed in the activity through the deterioration of circumstantial conditions.
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Claims 9
Claim · model-written summary
Dense spacing increased primary roots per stem.
- Taxon
- Paddy Rice Plantt0
- Treatment
- denser spacinge0
- Outcome
- number of primary roots per steme0
- Direction
- increasede0
Not reportedComparator
Verbatim
t0“Paddy Rice Plant”
e0“Under the condition of denser spacing, the plant increased in number of primary roots per stem, on the other hand, decreased in their weight per unit number.”
Claim · model-written summary
Dense spacing decreased root weight per primary root.
Not reportedComparator
Verbatim
t0“Paddy Rice Plant”
e0“Under the condition of denser spacing, the plant increased in number of primary roots per stem, on the other hand, decreased in their weight per unit number.”
Claim · model-written summary
Dense spacing made the root system shallower.
Not reportedComparator
Verbatim
t0“Paddy Rice Plant”
e0“The rot system was distributed shallowly under those conditions.”
Claim · model-written summary
Dense spacing depressed root α-naphthylamine oxidation capacity.
- Taxon
- Paddy Rice Plantt0
- Treatment
- denser spacinge0
- Outcome
- capacity to oxidize α-naphthylaminee0
- Direction
- depressede0
Not reportedComparator
Verbatim
t0“Paddy Rice Plant”
e0“The activity of root, in terms of the capacity to oxidize α-naphthylamine, was depressed either by denser spacing or by stronger restriction of root area.”
Claim · model-written summary
Root-area restriction depressed root α-naphthylamine oxidation capacity.
- Taxon
- Paddy Rice Plantt0
- Treatment
- stronger restriction of root areae0
- Outcome
- capacity to oxidize α-naphthylaminee0
- Direction
- depressede0
Not reportedComparator
Verbatim
t0“Paddy Rice Plant”
e0“The activity of root, in terms of the capacity to oxidize α-naphthylamine, was depressed either by denser spacing or by stronger restriction of root area.”
Claim · model-written summary
Dense spacing lowered soil oxidation-reduction potential in the root area.
- Taxon
- Paddy Rice Plantt0
- Treatment
- denser spacinge0
- Outcome
- oxidation-reduction potential of soil in root areae0
- Direction
- lowerede0
Not reportedComparator
Verbatim
t0“Paddy Rice Plant”
e0“The oxidation-reduction potential of soil in root area was also lowered by denser spacing.”
Claim · model-written summary
Dense spacing decreased rice mineral nutrient content.
- Taxon
- rice plant
Oryza sativae0 - Treatment
- denser spacinge0
- Outcome
- content of mineral nutrientse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Paddy Rice Plant”
e0“The content of mineral nutrients in rice plant was decreased by denser spacing or stronger restriction of root area”
Claim · model-written summary
Root-area restriction decreased rice mineral nutrient content.
- Taxon
- rice plantOryza sativae0
- Treatment
- stronger restriction of root areae0
- Outcome
- content of mineral nutrientse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Paddy Rice Plant”
e0“The content of mineral nutrients in rice plant was decreased by denser spacing or stronger restriction of root area”
Claim · model-written summary
Dense spacing markedly decreased potassium in shoots and roots late in growth.
- Taxon
- Paddy Rice Plantt0
- Treatment
- these conditionse0
- Outcome
- potassium in either top or roote0
- Direction
- decreasede0
- Qualifier
- later stage of growthe0
Not reportedComparator
Verbatim
t0“Paddy Rice Plant”
e0“that of potassium in either top or root was remarkably decreased by these conditions at later stage of growth.”
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See all 24 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.