Abstract
고구마의 연작장해를 경감시키기 위하여, 연작지 토양과 심토반전 토양에서 농가묘와 바이러스 무병묘를 $70{\times}25cm$ 간격으로 재배하였다. 연작지 토양의 시비량은 $N-P_2O_5-K_2O$ = 55-63-156$kg\;ha^{-1}$과 우분퇴비 10$ton\;ha^{-1}$으로 표준시비를 하였고, 심토반전 토양은 질소비료와 퇴비만을 50% 증시하였다. 삽식 30, 120일째의 생육과 수량 및 품질특성을 조사한 결과는 다음과 같다. 1. 삽식 30일경부터 농가묘에서는 바이러스 병징이 뚜렷하였으나, 무병묘에서는 나타나지 않았다. 2. 무병묘의 수량성은 농가묘보다 심토반전 토양 15.0%, 연작지 10.5%의 증가를 보였다. 3. 심토반전 토양에서의 수량성은 연작지보다 농가묘 8.8%, 무병묘 3.2%의 증가를 보였으며, 심토반전 토양에서 바이러스 무병묘 재배는 상저비율이 농가묘(60.1%) 대비 80%로 높아져 경제성이 있었다. 4. 무병묘에서 수확한 고구마의 품질은 농가묘보다 피색이 선명하고, 고구마 모양이 좋아져 외관 품질향상에도 유리하였다. 5. 심토반전 토양 및 무병묘에서 수량증가는 30일째 엽수와 120일째 분지수와 정의 상관관계(p=0.05)가 인정되었으며, 이는 고구마 괴근형성에 초기생육이 중요하다는 것을 보여주었다. To reduce the injury by continuous cropping of sweet potato (Ipomoea batatas (L.) Lam.), the farmer's plant and virus-free plant were cultivated with the density of $70{\times}25cm$ (June 10, 2011) in continuous cropping soil (CCS) and subsoiling reversion soil (SRS). Fertilizer was applied at the rates of 55-63-156 $kg\;ha^{-1}$ ($N-P_2O_5-K_2O$) and 10 $ton\;ha^{-1}$ of cattle manure in CCS, and it was applied the 50% increased cattle manure compost and nitrogen in DRS. Symptoms of viral infection were revealed in the farmer's plant at 30 days after planting, but there were no symptoms in virus-free plant. The yield of virus-free plant was more increased 15% and 10.5% than that of farmer's plant in DRS and CCS, respectively. The yield of sweetpotato in SRS was more increased 8.8% and 3.2% in farmer's plant and virus-free plant compared to CCS, respectively. In DRS, the rate of marketable tuber of virus-free plant was increased by 80% compared to the farmer's plant (60.1%). The virus-free plant was produced the tuber with more brilliant peel color and well-formed shape compared to the farmer's plant. The increased yield of virus-free plant and in SRS soil condition showed a positive relationship (p=0.05) with the number of leaf per plant at 30 days and the number of branch per plant at 120 days after planting. The results showed that the early growth after planting was very important for the development of storage root. Therefore, the deep-subsoil reversion and cultivation of virus-free plant could be reduced the injury by continuous cropping of sweet potato, and increased farm income.
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Claims 12
Claim · model-written summary
Virus symptoms appeared in farmer plants after 30 days.
- Taxon
- sweet potato
_Flower.jpg?width=60)
Ipomoea batatase1 - Material
- farmer's plante0
- Outcome
- Symptoms of viral infectione0
- Qualifier
- 30 days after plantinge0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e0“Symptoms of viral infection were revealed in the farmer's plant at 30 days after planting”
e1“sweet potato (Ipomoea batatas (L.) Lam.)”
Claim · model-written summary
Virus-free plants showed no virus symptoms after 30 days.
- Taxon
- sweet potatoIpomoea batatase1
- Material
- virus-free plante0
- Outcome
- no symptomse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there were no symptoms in virus-free plant”
e1“sweet potato (Ipomoea batatas (L.) Lam.)”
Claim · model-written summary
Virus-free plants yielded 15% more than farmer plants in DRS.
- Taxon
- sweet potatoIpomoea batatase1
- Treatment
- virus-free plante0
- Outcome
- yielde0
- Direction
- more increasede0
- Value
- 15%e0
- Comparator
- farmer's plante0
- Setting
- DRSe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield of virus-free plant was more increased 15% and 10.5% than that of farmer's plant in DRS and CCS, respectively”
e1“sweet potato (Ipomoea batatas (L.) Lam.)”
Claim · model-written summary
Virus-free plants yielded 10.5% more than farmer plants in CCS.
- Taxon
- sweet potatoIpomoea batatase1
- Treatment
- virus-free plante0
- Outcome
- yielde0
- Direction
- more increasede0
- Value
- 10.5%e0
- Comparator
- farmer's plante0
- Setting
- CCSe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield of virus-free plant was more increased 15% and 10.5% than that of farmer's plant in DRS and CCS, respectively”
e1“sweet potato (Ipomoea batatas (L.) Lam.)”
Claim · model-written summary
SRS increased farmer plant yield 8.8% relative to CCS.
- Taxon
- sweetpotatoIpomoea batatase0
- Material
- farmer's plante0
- Treatment
- SRSe0
- Outcome
- yielde0
- Direction
- more increasede0
- Value
- 8.8%e0
- Comparator
- CCSe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield of sweetpotato in SRS was more increased 8.8% and 3.2% in farmer's plant and virus-free plant compared to CCS, respectively”
Claim · model-written summary
SRS increased virus-free plant yield 3.2% relative to CCS.
- Taxon
- sweetpotatoIpomoea batatase0
- Material
- virus-free plante0
- Treatment
- SRSe0
- Outcome
- yielde0
- Direction
- more increasede0
- Value
- 3.2%e0
- Comparator
- CCSe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield of sweetpotato in SRS was more increased 8.8% and 3.2% in farmer's plant and virus-free plant compared to CCS, respectively”
Claim · model-written summary
Virus-free plants had 80% marketable tubers in DRS versus 60.1% for farmer plants.
- Taxon
- sweet potatoIpomoea batatase1
- Treatment
- virus-free plante0
- Outcome
- rate of marketable tubere0
- Direction
- increasede0
- Value
- 80%e0
- Qualifier
- 60.1%e0
- Comparator
- farmer's plante0
- Setting
- DRSe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In DRS, the rate of marketable tuber of virus-free plant was increased by 80% compared to the farmer's plant (60.1%)”
e1“sweet potato (Ipomoea batatas (L.) Lam.)”
Claim · model-written summary
Virus-free plants produced tubers with brighter peel color and better shape.
- Taxon
- sweet potatoIpomoea batatase1
- Treatment
- virus-free plante0
- Outcome
- more brilliant peel color and well-formed shapee0
- Direction
- more brilliante0
- Comparator
- farmer's plante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The virus-free plant was produced the tuber with more brilliant peel color and well-formed shape compared to the farmer's plant”
e1“sweet potato (Ipomoea batatas (L.) Lam.)”
Claim · model-written summary
Yield increase was positively related to leaf number at 30 days.
- Taxon
- sweet potatoIpomoea batatase1
- Organ / stage
- leafe0
- Outcome
- increased yielde0
- Direction
- positivee0
Not reportedValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The increased yield of virus-free plant and in SRS soil condition showed a positive relationship (p=0.05) with the number of leaf per plant at 30 days and the number of branch per plant at 120 days after planting”
e1“sweet potato (Ipomoea batatas (L.) Lam.)”
Claim · model-written summary
Yield increase was positively related to branch number at 120 days.
- Taxon
- sweet potatoIpomoea batatase1
- Organ / stage
- branche0
- Outcome
- increased yielde0
- Direction
- positivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The increased yield of virus-free plant and in SRS soil condition showed a positive relationship (p=0.05) with the number of leaf per plant at 30 days and the number of branch per plant at 120 days after planting”
e1“sweet potato (Ipomoea batatas (L.) Lam.)”
Claim · model-written summary
The authors conclude early growth is important for storage root development.
- Taxon
- sweet potatoIpomoea batatase1
- Outcome
- development of storage roote0
- Qualifier
- early growth after plantinge0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the early growth after planting was very important for the development of storage root”
e1“sweet potato (Ipomoea batatas (L.) Lam.)”
Claim · model-written summary
The authors recommend deep subsoil reversion and virus-free plants to reduce continuous cropping injury and increase farm income.
- Taxon
- sweet potatoIpomoea batatase0
- Outcome
- deep-subsoil reversion and cultivation of virus-free plante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the deep-subsoil reversion and cultivation of virus-free plant could be reduced the injury by continuous cropping of sweet potato, and increased farm income”
The same questions in other papers
tillage · yield · Ipomoea batatas (sweet potato)Positive and negative results
6 papers in the same direction as this paper · 2 reporting no difference from an alternative
- no effect
- no effect
- positive
5 papers more in this group
See all 9 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.