Abstract
고구마 연작 토양에서 토양물리성을 개선하고 고구마의 괴근 수량을 증가시키기 위한 심토파쇄의 효과를 살펴본 결과는 다음과 같다. 1. 용적밀도와 공극률, 고상의 비율은 표토와 심토에서 2년간 심토파쇄+로터리 혹은 1년차 심토파쇄+로터리 토양에서 개선되어 심토파쇄에 의해 토양물리성이 개선되는 것으로 나타났다. 2. 심토파쇄의 깊이가 깊어질수록 유기물, 유효인산, 총 질소 등 토양 양분은 감소하는 경향이었다. 3. 지상부 수량과 주경의 길이는 2년간 심토파쇄+로터리 토양에서 많거나 길었으며, 1년차 심토파쇄+로터리 토양, 관행 로터리 토양 순으로 줄어들었으나 유의적인 차이는 없었다. 4. 심토파쇄+로터리 토양에서 관행 로터리 토양보다 상품괴근수량이 17~20% 정도 유의하게 많았으며 주당 상저수, 주당 상저중도 증가하여 고구마 연작지에서 심토파쇄에 의한 증수 효과가 있는 것으로 나타났다. 5. 고구마 괴근의 브릭스 당도와 총유리당 함량은 심토파쇄에 따른 유의한 차이는 없었다. Storage root yield of sweetpotato was decreasing owing to continuous sweetpotato cropping, debasement of soil physical properties, increasing incidence of pest and disease. This study was conducted to evaluate the changes in physicochemical properties of the soil owing to subsoiling (subsoiling to 50 cm depth), and the effect on growth and yield of sweetpotato. The subsoiling treatments included subsoiling treated every year for two years, subsoiling in the first year, and no subsoiling control. The soil physical properties measured were bulk density, hardness, porosity, three phase. Bulk density, porosity, soild (%) of three phase were improved by subsoiling in topsoil and subsoil. Main vine length and vine yield in subsoiling soil were higher than those in no subsoiling soil, but those were not significantly different. Yield of marketable storage root in subsoiling soils treated every year for two years and treated in the first year was more increased 17% and 20% than no subsoiling soil, respectively. The number of marketable storage root per plant was also higher in subsoiling soils than no subsoiling soil, but it was not significantly different. Soluble solid contents and total free sugar contents of storage root of sweetpotato were not significantly different among the treatments. These results show that improving soil physical properties by subsoiling could promote high yield of marketable storage root in continuous sweetpotato cropping field.
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Claims 7
Claim · model-written summary
Subsoiling improved bulk density, porosity and solid ratio of three phase in topsoil and subsoil.
- Taxon
- Sweetpotato
_Flower.jpg?width=60)
Ipomoea batatast0 - Organ / stage
- topsoil and subsoile0
- Treatment
- subsoilinge0
- Outcome
- Bulk density, porosity, soild (%) of three phasee0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
t0“Sweetpotato in Continuous”
e0“Bulk density, porosity, soild (%) of three phase were improved by subsoiling in topsoil and subsoil”
Claim · model-written summary
Subsoiling gave higher main vine length and vine yield than no subsoiling, not significantly different.
- Taxon
- SweetpotatoIpomoea batatast0
- Treatment
- subsoilinge1
- Outcome
- Main vine length and vine yielde1
- Direction
- highere1
- Comparator
- no subsoiling soile1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sweetpotato in Continuous”
e1“Main vine length and vine yield in subsoiling soil were higher than those in no subsoiling soil, but those were not significantly different”
Claim · model-written summary
Marketable storage root yield was 17% more with subsoiling every year for two years than with no subsoiling.
- Taxon
- SweetpotatoIpomoea batatast0
- Treatment
- treated every year for two yearse2
- Outcome
- Yield of marketable storage roote2
- Direction
- more increasede2
- Value
- 17%e2
- Comparator
- no subsoiling soile2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sweetpotato in Continuous”
e2“Yield of marketable storage root in subsoiling soils treated every year for two years and treated in the first year was more increased 17% and 20% than no subsoiling soil, respectively”
Claim · model-written summary
Marketable storage root yield was 20% more with subsoiling in the first year than with no subsoiling.
- Taxon
- SweetpotatoIpomoea batatast0
- Treatment
- treated in the first yeare2
- Outcome
- Yield of marketable storage roote2
- Direction
- more increasede2
- Value
- 20%e2
- Comparator
- no subsoiling soile2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sweetpotato in Continuous”
e2“Yield of marketable storage root in subsoiling soils treated every year for two years and treated in the first year was more increased 17% and 20% than no subsoiling soil, respectively”
Claim · model-written summary
Number of marketable storage roots per plant was higher with subsoiling than with no subsoiling, not significantly different.
- Taxon
- SweetpotatoIpomoea batatast0
- Treatment
- subsoilinge3
- Outcome
- number of marketable storage root per plante3
- Direction
- highere3
- Comparator
- no subsoiling soile3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sweetpotato in Continuous”
e3“The number of marketable storage root per plant was also higher in subsoiling soils than no subsoiling soil, but it was not significantly different”
Claim · model-written summary
Soluble solid contents and total free sugar contents of storage roots did not differ significantly among treatments.
- Taxon
- SweetpotatoIpomoea batatast0
- Outcome
- Soluble solid contents and total free sugar contents of storage roote4
- Qualifier
- not significantly differente4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sweetpotato in Continuous”
e4“Soluble solid contents and total free sugar contents of storage root of sweetpotato were not significantly different among the treatments”
Claim · model-written summary
The authors suggest that improving soil physical properties by subsoiling could promote high marketable storage root yield.
- Taxon
- SweetpotatoIpomoea batatast0
- Treatment
- subsoilinge5
- Outcome
- high yield of marketable storage roote5
- Qualifier
- improving soil physical propertiese5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sweetpotato in Continuous”
e5“These results show that improving soil physical properties by subsoiling could promote high yield of marketable storage root in continuous sweetpotato cropping field”
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2 papers in the same direction as this paper
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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.