Abstract
Rice growing season at riparian wetlands in Indonesia is started at the end of rainy season before floodwater completely subsides. However, available materials for nursery substrate are limited during flooding period of the wetlands. This study aimed to evaluate three available and affordable substrates for producing high quality rice seedlings. The three substrates evaluated were decaying biomass of Utricularia vulgaris (DBUv); mixed of soil and U. vulgaris biomass plus biochar (SUv+B); and soil amended with biochar (S+B). Rice seedling preparation was done using modified floating seedbeds, adjusted specifically for light weight load of the evaluated substrates. Results of this study indicated that seedlings sown on DBUv substrate were significantly taller than those on S+B or DBUv substrate at 21 DAS. Roots of seedlings sown on DBUv substrate exhibited minimum broken root tips, when they were pulled off the substrate, while more broken root tips were observed in those sown on SUv+B and S+B substrates, causing significantly more shorter intact roots. Broken root tip was closely related to substrate porosity. DBUv substrate had significantly higher porosity than SUv+B and S+B substrates. There were no significant differences in number of leaves and chlorophyll concentration index (CCI) among seedlings grown on all substrates. Better performance of seedlings grown on DBUv substrate was more pronounced on 21-day-old seedlings; therefore, it is recommended to farmers to use DBUv substrate and do transplanting of rice seedlings to paddy field at age of 21-day-old.
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Claims 8
Claim · model-written summary
Rice seedlings on DBUv were significantly taller at 21 DAS than the stated substrate comparison.
- Taxon
- rice
Oryza sativat0 - Organ / stage
- seedlingse0
- Treatment
- DBUv substratee0
- Outcome
- seedlings sown on DBUv substrate were significantly tallere0
- Direction
- tallere0
- Qualifier
- 21 DASe0
- Comparator
- S+B or DBUv substratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results of this study indicated that seedlings sown on DBUv substrate were significantly taller than those on S+B or DBUv substrate at 21 DAS.”
t0“rice seedlings”
Claim · model-written summary
DBUv seedlings had the fewest broken root tips compared with SUv+B and S+B seedlings.
- Taxon
- riceOryza sativat0
- Organ / stage
- Rootse0
- Treatment
- DBUv substratee0
- Outcome
- broken root tipse0
- Direction
- minimume0
- Comparator
- SUv+B and S+B substratese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Roots of seedlings sown on DBUv substrate exhibited minimum broken root tips, when they were pulled off the substrate, while more broken root tips were observed in those sown on SUv+B and S+B substrates, causing significantly more shorter intact roots.”
t0“rice seedlings”
Claim · model-written summary
Seedlings on SUv+B and S+B had significantly shorter intact roots than DBUv seedlings.
- Taxon
- riceOryza sativat0
- Organ / stage
- Rootse0
- Treatment
- SUv+B and S+B substratese0
- Outcome
- intact rootse0
- Direction
- shortere0
- Comparator
- DBUv substratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Roots of seedlings sown on DBUv substrate exhibited minimum broken root tips, when they were pulled off the substrate, while more broken root tips were observed in those sown on SUv+B and S+B substrates, causing significantly more shorter intact roots.”
t0“rice seedlings”
Claim · model-written summary
Broken root tips were closely related to substrate porosity.
- Taxon
- riceOryza sativat0
- Treatment
- substrate porositye0
- Outcome
- Broken root tipe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Broken root tip was closely related to substrate porosity.”
t0“rice seedlings”
Claim · model-written summary
DBUv had significantly higher porosity than SUv+B and S+B.
- Taxon
- riceOryza sativat0
- Treatment
- DBUv substratee0
- Outcome
- porositye0
- Direction
- highere0
- Comparator
- SUv+B and S+B substratese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DBUv substrate had significantly higher porosity than SUv+B and S+B substrates.”
t0“rice seedlings”
Claim · model-written summary
Leaf number and chlorophyll concentration index did not differ significantly among substrates.
- Taxon
- riceOryza sativat0
- Treatment
- all substratese0
- Outcome
- number of leaves and chlorophyll concentration index (CCI)e0
- Direction
- no significant differencese0
- Comparator
- all substratese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were no significant differences in number of leaves and chlorophyll concentration index (CCI) among seedlings grown on all substrates.”
t0“rice seedlings”
Claim · model-written summary
The DBUv seedling performance advantage was more pronounced at 21 days.
- Taxon
- riceOryza sativat0
- Organ / stage
- 21-day-old seedlingse0
- Treatment
- DBUv substratee0
- Outcome
- Better performancee0
- Direction
- more pronouncede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Better performance of seedlings grown on DBUv substrate was more pronounced on 21-day-old seedlings”
t0“rice seedlings”
Claim · model-written summary
The authors recommend DBUv substrate and transplanting rice at 21 days.
- Taxon
- riceOryza sativae0
- Outcome
- use DBUv substrate and do transplanting of rice seedlings to paddy field at age of 21-day-olde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it is recommended to farmers to use DBUv substrate and do transplanting of rice seedlings to paddy field at age of 21-day-old.”
The same questions in other papers
growing medium · molecular: metabolites · Oryza sativa (rice)Positive and negative results
2 reporting no difference from an alternative
- positive
- positive
growing medium · growth · Oryza sativa (rice)Positive and negative results
20 papers in the same direction as this paper · 5 in the opposite direction
- negative
- no effect
- no effect
22 papers more in this group
See all 26 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.