Abstract
The objectives of this study were to evaluate no-tillage cover crop cropping systems for organic farming in paddy. The experiment was performed at Ihyeon series (silt loam: 9.1% sand, 73.0% silt and 17.9% clay) which affected by different management practices. Planthopper population per 20 plant was significantly higher 65.3 for conventional tillage with chemical compounds (control) compared with 3.4~9.6 for no-tillage treatments (without rice straw or green manure, amended with rice straw, hairy vetch, rape, rye, and Chinese milk vetch). Also, disease severity of sheath blight was significantly higher 10.5% for control compared to 0.7~2.9% for no-tillage treatments. Four weed species, namely Monochoria vaginalis, Ludwigia prostrata, Rotala indica, and Aneilema keisak occurred in no-tillage paddy, whereas Monochoria vaginalis occurred in control only. The pH, available phosphate, and microbial biomass C in paddy were steeply decreased in response to submerging, but increased at first heading stage. Soil -N content at first heading stage was significantly higher in no-tillage treatments compared with control. The grain yield was significantly higher in 4.30 Mg for control than other treatments. Meanwhile, rice productivity was significantly higher in 2.69 Mg for no-tillage amended with Chinese milk vetch compared to other no-tillage treatments. The number of panicle per plant, grain number perpanicle, and percent ripened grain were highly related for increasing the yield of rice. These results show that Chinese milk vetch was optimum cover crop for organic farming in no-tillage paddy.
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Claims 8
Claim · model-written summary
Planthopper population per 20 plants was significantly lower (3.4~9.6) in no-tillage treatments than in conventional tillage with chemicals (65.3).
- Taxon
- Rice
Oryza sativat0 - Treatment
- no-tillage treatmentse0
- Interactor
- Planthoppere0pest
- Outcome
- Planthopper population per 20 plante0
- Direction
- lowerinferrede0
- Value
- 3.4~9.6e0
- Qualifier
- 65.3e0
- Comparator
- conventional tillage with chemical compounds (control)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“No-tillage Rice Cover Crop”
e0“Planthopper population per 20 plant was significantly higher 65.3 for conventional tillage with chemical compounds (control) compared with 3.4~9.6 for no-tillage treatments”
Claim · model-written summary
Sheath blight disease severity was significantly lower (0.7~2.9%) in no-tillage treatments than in the control (10.5%).
- Taxon
- RiceOryza sativat0
- Treatment
- no-tillage treatmentse0
- Interactor
- sheath blighte0pathogen
- Outcome
- disease severity of sheath blighte0
- Direction
- lowerinferrede0
- Value
- 0.7~2.9%e0
- Qualifier
- 10.5%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“No-tillage Rice Cover Crop”
e0“disease severity of sheath blight was significantly higher 10.5% for control compared to 0.7~2.9% for no-tillage treatments”
Claim · model-written summary
In the control paddy only Monochoria vaginalis occurred.
- Taxon
- RiceOryza sativat0
- Treatment
- controle0
- Interactor
- Monochoria vaginalise0weed
- Outcome
- occurred in control onlye0
- Direction
- nae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“No-tillage Rice Cover Crop”
e0“whereas Monochoria vaginalis occurred in control only”
Claim · model-written summary
Soil pH, available phosphate and microbial biomass C in paddy decreased steeply in response to submerging.
- Taxon
- RiceOryza sativat0
- Treatment
- submerginge0
- Outcome
- pH, available phosphate, and microbial biomass Ce0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“No-tillage Rice Cover Crop”
e0“The pH, available phosphate, and microbial biomass C in paddy were steeply decreased in response to submerging”
Claim · model-written summary
Soil N content at first heading stage was significantly higher in no-tillage treatments than in control.
- Taxon
- RiceOryza sativat0
- Treatment
- no-tillage treatmentse0
- Outcome
- Soil -N contente0
- Direction
- highere0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“No-tillage Rice Cover Crop”
e0“Soil -N content at first heading stage was significantly higher in no-tillage treatments compared with control”
Claim · model-written summary
Rice productivity was significantly higher (2.69 Mg) in no-tillage amended with Chinese milk vetch than in other no-tillage treatments.
- Taxon
- RiceOryza sativat0
- Treatment
- no-tillage amended with Chinese milk vetche0
- Outcome
- rice productivitye0
- Direction
- highere0
- Value
- 2.69 Mge0
- Comparator
- other no-tillage treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“No-tillage Rice Cover Crop”
e0“rice productivity was significantly higher in 2.69 Mg for no-tillage amended with Chinese milk vetch compared to other no-tillage treatments”
Claim · model-written summary
Number of panicles per plant, grain number per panicle and percent ripened grain were highly related to increasing rice yield.
- Taxon
- RiceOryza sativat0
- Organ / stage
- paniclee0
- Outcome
- yield of ricee0
- Direction
- increaseinferrede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“No-tillage Rice Cover Crop”
e0“The number of panicle per plant, grain number perpanicle, and percent ripened grain were highly related for increasing the yield of rice”
Claim · model-written summary
Chinese milk vetch was the optimum cover crop for organic farming in no-tillage paddy.
- Taxon
- RiceOryza sativat0
- Outcome
- optimum cover crope0
- Setting
- no-tillage paddye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“No-tillage Rice Cover Crop”
e0“Chinese milk vetch was optimum cover crop for organic farming in no-tillage paddy”
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