Abstract
1. Effect of irrigation at different times of growing season on the tillering and yield of rice plants in direct sowing culture was studied in the glass house. 2. In the plots receiving no irrigation during early stage of growth, the tillering period was delayed as compared to the other plots. 3. In the plots, which received irrigation from the 12th leaf stage on, plants continued to tillering until the latest time. 4. Plot having no irrigation during early stage of growth showed low percentage of available tillers (tillers bearing ears) but the plot received irrigation from 9th leaf stage on gave high percentage of available tillers. 5. Irrigation from the 3rd leaf stage on causes secondary and tertially tillerings formation. 6. Irrigation from the 6th leaf stage causes the largest number of stems than all thier plots. 7. Irrigation from the 9th leaf state and from 12th leaf stage result in the greater yield than all other plots. In the usual method of rice culture which contains transplanting the practice named "Nakaboshi" (dry up the paddy field at a certain time) is said to be useful to obtain the greater yield. However in the case of direct sowing culture, it was found that the irrigation starts at that time gives the best effect on yield.
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Claims 8
Claim · model-written summary
Rice plots receiving no irrigation during early growth had a delayed tillering period compared with the other plots.
- Taxon
- rice plants
Oryza sativae0 - Treatment
- no irrigation during early stage of growthe1
- Outcome
- tillering periode1
- Direction
- delayede1
- Comparator
- the other plotse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice plants”
e1“In the plots receiving no irrigation during early stage of growth, the tillering period was delayed as compared to the other plots”
Claim · model-written summary
In plots irrigated from the 12th leaf stage on, rice plants continued tillering until the latest time.
- Taxon
- rice plantsOryza sativae0
- Treatment
- irrigation from the 12th leaf stage one1
- Outcome
- continued to tillering until the latest timee1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice plants”
e1“In the plots, which received irrigation from the 12th leaf stage on, plants continued to tillering until the latest time”
Claim · model-written summary
Rice plots with no irrigation during early growth showed a low percentage of available (ear-bearing) tillers.
- Taxon
- rice plantsOryza sativae0
- Treatment
- no irrigation during early stage of growthe1
- Outcome
- percentage of available tillerse1
- Direction
- lowe1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice plants”
e1“Plot having no irrigation during early stage of growth showed low percentage of available tillers”
Claim · model-written summary
Rice plots irrigated from the 9th leaf stage on gave a high percentage of available (ear-bearing) tillers.
- Taxon
- rice plantsOryza sativae0
- Treatment
- irrigation from 9th leaf stage one1
- Outcome
- percentage of available tillerse1
- Direction
- highe1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice plants”
e1“the plot received irrigation from 9th leaf stage on gave high percentage of available tillers”
Claim · model-written summary
Irrigation from the 3rd leaf stage on caused formation of secondary and tertiary tillerings in rice.
- Taxon
- rice plantsOryza sativae0
- Treatment
- Irrigation from the 3rd leaf stage one1
- Outcome
- secondary and tertially tillerings formatione1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice plants”
e1“Irrigation from the 3rd leaf stage on causes secondary and tertially tillerings formation”
Claim · model-written summary
Irrigation from the 6th leaf stage gave the largest number of stems compared with all the other plots.
- Taxon
- rice plantsOryza sativae0
- Treatment
- Irrigation from the 6th leaf stagee1
- Outcome
- number of stemse1
- Direction
- largeste1
- Comparator
- all thier plotse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice plants”
e1“Irrigation from the 6th leaf stage causes the largest number of stems than all thier plots”
Claim · model-written summary
Irrigation from the 9th leaf stage and from the 12th leaf stage gave greater rice yield than all other plots.
- Taxon
- rice plantsOryza sativae0
- Treatment
- Irrigation from the 9th leaf state and from 12th leaf stagee1
- Outcome
- yielde1
- Direction
- greatere1
- Comparator
- all other plotse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice plants”
e1“Irrigation from the 9th leaf state and from 12th leaf stage result in the greater yield than all other plots”
Claim · model-written summary
The authors conclude that in direct-sown rice, starting irrigation at the time of the Nakaboshi dry-up gives the best effect on yield.
- Taxon
- rice plantsOryza sativae0
- Outcome
- best effect on yielde1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice plants”
e1“in the case of direct sowing culture, it was found that the irrigation starts at that time gives the best effect on yield”
The same questions in other papers
irrigation · growth · Oryza sativa (rice)Positive and negative results
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- negative
- negative
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See all 291 papers →irrigation · yield · Oryza sativa (rice)Positive and negative results
905 papers in the same direction as this paper · 201 in the opposite direction · 64 reporting no difference from an alternative
- negative
- negative
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1,167 papers more in this group
See all 1,171 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.