Abstract
The usefulness of silicate materials in rice cultivation has been reported by a number of authors. However, very little has been done to study recycling of silicon (Si)-rich plant residues, such as the use of rice chaffs as soil amendments. Pot experiments were conducted in a green-house at Gifu University in 1997. In this investigation, powdered rice chaff (Cp) and normal rice chaff (Ch) were mixed in a fertile clay loam soil and an infertile sandy loam soil, with or without a biodecomposer (Wara soil). Calcium silicate was also applied to the soils for comparison. For both types of soils, six treatments were replicated four times giving 48 pots (24 × 2) in total with a randomized complete block design. Rice plants (Oryza sativa L. cv. Hatsushimo) were grown in pots filled with the soils as treated above, and the growth and Si and nitrogen (N) contents in the plants and grain yield were determined. Application of rice chaffs had little effect on plant height, but slightly increased the number of tillers per pot. The total N content of the plants was decreased in the clay loam soil but not in the sandy loam soil, but the Si content in the plants, grown in both soils, was increased. The effect of Cp and Ch on the Si content of plants was significantly enhanced by the addition of the biodecomposer. Both organic and inorganic silicate materials increased the number of grains and the dry weights of grains. The application of Cp together with the biodecomposer was the most effective. Cp could be used instead of inorganic Si fertilizer, providing a sustainable Si recycle system in rice cultivation.
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Claims 10
Claim · model-written summary
Rice chaff application had little effect on plant height of rice
- Taxon
- Oryza sativa
Oryza sativae1 - Material
- cv. Hatsushimoe1
- Treatment
- rice chaffse0
- Outcome
- plant heighte0
- Direction
- little effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of rice chaffs had little effect on plant height, but slightly increased the number of tillers per pot”
e1“Rice plants (Oryza sativa L. cv. Hatsushimo) were grown in pots filled with the soils as treated above”
Claim · model-written summary
Rice chaff application slightly increased the number of tillers per pot of rice
- Taxon
- Oryza sativaOryza sativae1
- Material
- cv. Hatsushimoe1
- Treatment
- rice chaffse0
- Outcome
- number of tillers per pote0
- Direction
- slightly increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of rice chaffs had little effect on plant height, but slightly increased the number of tillers per pot”
e1“Rice plants (Oryza sativa L. cv. Hatsushimo) were grown in pots filled with the soils as treated above”
Claim · model-written summary
Rice chaff application decreased total N content of rice plants in clay loam soil
- Taxon
- Oryza sativaOryza sativae1
- Treatment
- rice chaffse2
- Outcome
- total N contente0
- Direction
- decreasede0
- Setting
- clay loam soile0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The total N content of the plants was decreased in the clay loam soil but not in the sandy loam soil”
e1“Rice plants (Oryza sativa L. cv. Hatsushimo) were grown in pots filled with the soils as treated above”
e2“Application of rice chaffs had little effect on plant height, but slightly increased the number of tillers per pot”
Claim · model-written summary
Rice chaff application did not decrease total N content of rice plants in sandy loam soil
- Taxon
- Oryza sativaOryza sativae1
- Treatment
- rice chaffse2
- Outcome
- total N contente0
- Direction
- no_changeinferrede0
- Setting
- sandy loam soile0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The total N content of the plants was decreased in the clay loam soil but not in the sandy loam soil”
e1“Rice plants (Oryza sativa L. cv. Hatsushimo) were grown in pots filled with the soils as treated above”
e2“Application of rice chaffs had little effect on plant height, but slightly increased the number of tillers per pot”
Claim · model-written summary
Rice chaff application increased Si content of rice plants grown in both soils
- Taxon
- Oryza sativaOryza sativae1
- Treatment
- rice chaffse2
- Outcome
- Si contente0
- Direction
- increasede0
- Setting
- both soilse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the Si content in the plants, grown in both soils, was increased”
e1“Rice plants (Oryza sativa L. cv. Hatsushimo) were grown in pots filled with the soils as treated above”
e2“Application of rice chaffs had little effect on plant height, but slightly increased the number of tillers per pot”
Claim · model-written summary
Adding the biodecomposer significantly enhanced the effect of rice chaffs on Si content of rice
- Taxon
- Oryza sativaOryza sativae1
- Treatment
- addition of the biodecomposere0
- Outcome
- Si contente0
- Direction
- significantly enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effect of Cp and Ch on the Si content of plants was significantly enhanced by the addition of the biodecomposer”
e1“Rice plants (Oryza sativa L. cv. Hatsushimo) were grown in pots filled with the soils as treated above”
Claim · model-written summary
Both organic and inorganic silicate materials increased the number of grains of rice
- Taxon
- Oryza sativaOryza sativae1
- Treatment
- Both organic and inorganic silicate materialse0
- Outcome
- number of grainse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both organic and inorganic silicate materials increased the number of grains and the dry weights of grains”
e1“Rice plants (Oryza sativa L. cv. Hatsushimo) were grown in pots filled with the soils as treated above”
Claim · model-written summary
Both organic and inorganic silicate materials increased the dry weights of grains of rice
- Taxon
- Oryza sativaOryza sativae1
- Treatment
- Both organic and inorganic silicate materialse0
- Outcome
- dry weights of grainse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both organic and inorganic silicate materials increased the number of grains and the dry weights of grains”
e1“Rice plants (Oryza sativa L. cv. Hatsushimo) were grown in pots filled with the soils as treated above”
Claim · model-written summary
Cp together with the biodecomposer was the most effective treatment for rice
- Taxon
- Oryza sativaOryza sativae1
- Treatment
- Cp together with the biodecomposere0
- Outcome
- most effectivee0
- Direction
- most effectivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of Cp together with the biodecomposer was the most effective”
e1“Rice plants (Oryza sativa L. cv. Hatsushimo) were grown in pots filled with the soils as treated above”
Claim · model-written summary
Powdered rice chaff could be used instead of inorganic Si fertilizer in rice cultivation
- Taxon
- riceOryza sativae0
- Outcome
- Cp could be used instead of inorganic Si fertilizere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cp could be used instead of inorganic Si fertilizer, providing a sustainable Si recycle system in rice cultivation”
The same questions in other papers
silicate(4-) · growth · Oryza sativa (rice)Results differ
14 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
13 papers more in this group
See all 17 papers →silicate(4-) · yield · Oryza sativa (rice)Positive and negative results
43 papers in the same direction as this paper · 2 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- no effect
- no effect
43 papers more in this group
See all 47 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.