Abstract
Abstract A field experiment was conducted to study the effects on yield and soil properties of the continuous application of rice straw compost to an alluvial soil in the Mekong Delta, Vietnam. Fourteen rice crops, two crops per year, were grown by direct seeding of the crop. There were seven treatments: F0C− (no fertilizer and compost), F0C+ (compost with no fertilizer), F20C+, F40C+, F60C+, F80C+ (20, 40, 60 and 80% of the fertilizer application rate with compost, respectively), F100C− (full strength fertilizer application as N:P2O5:K2O at 100:30:30 kg ha−1 in the dry season and 80:30:30 kg ha−1 in the wet season without compost). Compost prepared from the rice straw was applied at 6 Mg ha−1 (fresh weight) at the cultivation of each crop. The F0C+ treatment showed higher yield than the F0C− treatment by 0.68 Mg ha−1 on average in the wet season, but not in the dry season. The rice yield in F0C− declined at a rate of 0.163 Mg ha−1 year−1 in the wet season, but there was no decline in rice yield in F0C+. In treatments with compost, the yield reached its plateau at F40, suggesting that compost could replace part of the fertilizer. Although there were no significant differences in the total C concentrations in the soil among the treatments, even after 12 consecutive crops, soil penetration resistance appeared to be lower with compost than without compost. This long-term field trial showed that the continuous application of rice straw compost has some positive effects on rice yield as well as on soil physical properties.
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 7
Claim · model-written summary
Compost without fertilizer raised wet-season rice yield by 0.68 Mg ha−1 versus no compost or fertilizer, with no dry-season effect.
- Taxon
- rice
Oryza sativat0 - Treatment
- F0C+ treatmente0
- Outcome
- yielde0
- Direction
- highere0
- Value
- 0.68 Mg ha−1e0
- Qualifier
- in the wet season, but not in the dry seasone0
- Comparator
- F0C− treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The F0C+ treatment showed higher yield than the F0C− treatment by 0.68 Mg ha−1 on average in the wet season, but not in the dry season.”
t0“rice yield”
Claim · model-written summary
Without compost or fertilizer, wet-season rice yield declined 0.163 Mg ha−1 year−1.
- Taxon
- riceOryza sativae0
- Treatment
- F0C−e0
- Outcome
- rice yielde0
- Direction
- declinede0
- Value
- 0.163 Mg ha−1 year−1e0
- Qualifier
- in the wet seasone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The rice yield in F0C− declined at a rate of 0.163 Mg ha−1 year−1 in the wet season”
Claim · model-written summary
With compost and no fertilizer, rice yield did not decline.
- Taxon
- riceOryza sativat0
- Treatment
- F0C+e0
- Outcome
- rice yielde0
- Direction
- no declinee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was no decline in rice yield in F0C+”
t0“rice yield”
Claim · model-written summary
With compost, rice yield plateaued at F40.
- Taxon
- riceOryza sativat0
- Treatment
- treatments with composte0
- Outcome
- yielde0
- Direction
- reached its plateaue0
- Qualifier
- at F40e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In treatments with compost, the yield reached its plateau at F40”
t0“rice yield”
Claim · model-written summary
Soil total C concentrations did not differ significantly among treatments after 12 crops.
- Taxon
- riceOryza sativat0
- Outcome
- total C concentrations in the soile0
- Direction
- no significant differencese0
- Qualifier
- even after 12 consecutive cropse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there were no significant differences in the total C concentrations in the soil among the treatments, even after 12 consecutive crops”
t0“on rice yield”
Claim · model-written summary
Compost appeared to lower soil penetration resistance.
- Taxon
- riceOryza sativat0
- Treatment
- with composte0
- Outcome
- soil penetration resistancee0
- Direction
- lowere0
- Comparator
- without composte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil penetration resistance appeared to be lower with compost than without compost”
t0“on rice yield”
Claim · model-written summary
The authors suggest compost could replace part of the fertilizer.
- Taxon
- riceOryza sativat0
- Outcome
- compost could replace part of the fertilizere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“suggesting that compost could replace part of the fertilizer”
t0“on rice yield”
The same questions in other papers
fertilization · disease · Oryza sativa (rice)Positive and negative results
90 papers in the same direction as this paper · 23 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- negative
111 papers more in this group
See all 115 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.