Abstract
녹비작물의 이용은 화학비료를 대체할 뿐만 아니라 토양의 지속성을 유지시킬 수 있는 방법 중의 하나이다. 본 연구에서는 동계기간 지속적으로 헤어리베치와 보리를 재배하고 이를 토양환원한 뒤 벼를 재배하는 윤작체계가 벼의 수량과 논 잡초 발생에 미치는 영향을 평가하였다. 손제초구에서 벼의 수량은 관행구와 비교하여 헤어리베치 재배구 및 헤어리베치와 보리 혼파구에서 각각 93%와 90%의 수량을 확보하였으나 보리 재배구는 79%수준이었다. 무제초구에서는 헤어리베치 재배구에서 관행구와 비슷한 수준이었고 헤어리베치와 보리 혼파구는 83%, 보리재배구는 54%수준으로 수량이 감소하였다. 벼의 최고분얼기의 논에서 발생한 잡초는 관행구에서는 물달개비가 포함된 6종이었고, 헤어리베치 재배구와 보리 재배구는 각 5종, 헤어리베치와 보리 혼파구는 2종(여뀌바늘, 돌피)이 발생하였다. 이들 잡초의 건물중은 헤어리베치 재배구와 보리 재배구에서 관행구보다 감소하였고 헤어리베치와 보리 혼파구에서 증가하였다. 헤어리베치 재배구에서는 방동사니과 잡초의 발생이 현저히 감소되었다. 피의 발생량은 관행구를 비롯하여 모든 처리구에서 다른 잡초보다 현저히 낮았으나 피가 차지하는 건물중 비율은 현저히 증가하였다. The use of green manure crop is one of the methods for alternative of chemical fertilizer as well as maintain of soil sustainability, therefore we evaluated the effect of green manure crops on rice growth and weed occurrence in rice-green manure crop double cropping system. The treatments consisted of incorporation of hairy vetch, barley or combined hairy vetch and barley without any agrochemical or fertilizer. In hand weeding, rice yield in hairy vetch only or hairy vetch and barley incorporated fields was attained by 90% and 93% of the conventional practice, respectively, while the value in barley incorporated fields was just 79%. Although the rice yields were lower than the hand weed control, similar trends in non-weed control were observed among all treatments. At maximum tillering stage, occurred weeds in hairy vetch, barley or hairy vetch and barley incorporated fields were five, five and two species, respectively, while those in conventional practice were six species. Also, the dry weight of weeds in hairy vetch and barley incorporated fields was decreased by 33% and 53% compared to it of conventional practice, while the value in hairy vetch and barley incorporated field was increased by 34%. Among all treatments, although occurrence density of Echinochloa crus-galli was lower than another weed species, the dry weight of it significantly increased. These results suggested that although continuous incorporation of proper amount of legume green manure crops was possible to productivity insurance of crop, but to attain it was essential to the effective management of weeds.
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Claims 13
Claim · model-written summary
Hairy vetch green manure gave rice yield of 90% of the conventional practice under hand weeding.
- Taxon
- rice
Oryza sativae1 - Treatment
- hairy vetche1
- Outcome
- rice yielde1
- Direction
- lowerinferrede1
- Value
- 90%e1
- Qualifier
- In hand weedinge1
- Comparator
- conventional practicee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In hand weeding, rice yield in hairy vetch only or hairy vetch and barley incorporated fields was attained by 90% and 93% of the conventional practice, respectively, while the value in barley incorporated fields was just 79%”
Claim · model-written summary
Hairy vetch and barley green manure gave rice yield of 93% of the conventional practice under hand weeding.
- Taxon
- riceOryza sativae1
- Treatment
- hairy vetch and barleye1
- Outcome
- rice yielde1
- Direction
- lowerinferrede1
- Value
- 93%e1
- Qualifier
- In hand weedinge1
- Comparator
- conventional practicee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In hand weeding, rice yield in hairy vetch only or hairy vetch and barley incorporated fields was attained by 90% and 93% of the conventional practice, respectively, while the value in barley incorporated fields was just 79%”
Claim · model-written summary
Barley green manure gave rice yield of 79% of the conventional practice under hand weeding.
- Taxon
- riceOryza sativae1
- Treatment
- barleye1
- Outcome
- rice yielde1
- Direction
- lowerinferrede1
- Value
- 79%e1
- Qualifier
- In hand weedinge1
- Comparator
- conventional practicee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In hand weeding, rice yield in hairy vetch only or hairy vetch and barley incorporated fields was attained by 90% and 93% of the conventional practice, respectively, while the value in barley incorporated fields was just 79%”
Claim · model-written summary
Rice yields without weeding were lower than under hand weed control, with similar trends across treatments.
- Taxon
- riceOryza sativae2
- Treatment
- non-weed controle2
- Outcome
- rice yieldse2
- Direction
- lowere2
- Comparator
- hand weed controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Although the rice yields were lower than the hand weed control, similar trends in non-weed control were observed among all treatments”
Claim · model-written summary
Hairy vetch incorporation gave five weed species at maximum tillering.
- Taxon
- riceOryza sativae2
- Treatment
- hairy vetche3
- Outcome
- occurred weedse3
- Value
- fivee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“At maximum tillering stage, occurred weeds in hairy vetch, barley or hairy vetch and barley incorporated fields were five, five and two species, respectively, while those in conventional practice were six species”
e2“Although the rice yields were lower than the hand weed control”
Claim · model-written summary
Barley incorporation gave five weed species at maximum tillering.
- Taxon
- riceOryza sativae2
- Treatment
- barleye3
- Outcome
- occurred weedse3
- Value
- fivee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“At maximum tillering stage, occurred weeds in hairy vetch, barley or hairy vetch and barley incorporated fields were five, five and two species, respectively, while those in conventional practice were six species”
e2“Although the rice yields were lower than the hand weed control”
Claim · model-written summary
Hairy vetch and barley incorporation gave two weed species at maximum tillering.
- Taxon
- riceOryza sativae2
- Treatment
- hairy vetch and barleye3
- Outcome
- occurred weedse3
- Value
- twoe3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“At maximum tillering stage, occurred weeds in hairy vetch, barley or hairy vetch and barley incorporated fields were five, five and two species, respectively, while those in conventional practice were six species”
e2“Although the rice yields were lower than the hand weed control”
Claim · model-written summary
Conventional practice had six weed species at maximum tillering.
- Taxon
- riceOryza sativae2
- Treatment
- conventional practicee3
- Outcome
- occurred weedse3
- Value
- sixe3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“At maximum tillering stage, occurred weeds in hairy vetch, barley or hairy vetch and barley incorporated fields were five, five and two species, respectively, while those in conventional practice were six species”
e2“Although the rice yields were lower than the hand weed control”
Claim · model-written summary
Hairy vetch incorporation decreased weed dry weight by 33% compared with conventional practice.
- Taxon
- riceOryza sativae1
- Treatment
- hairy vetche4
- Outcome
- dry weight of weedse4
- Direction
- decreasede4
- Value
- 33%e4
- Comparator
- conventional practicee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“the dry weight of weeds in hairy vetch and barley incorporated fields was decreased by 33% and 53% compared to it of conventional practice”
e1“In hand weeding, rice yield in hairy vetch only or hairy vetch and barley incorporated fields was attained by 90% and 93% of the conventional practice”
Claim · model-written summary
Barley incorporation decreased weed dry weight by 53% compared with conventional practice.
- Taxon
- riceOryza sativae1
- Treatment
- barleye4
- Outcome
- dry weight of weedse4
- Direction
- decreasede4
- Value
- 53%e4
- Comparator
- conventional practicee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“the dry weight of weeds in hairy vetch and barley incorporated fields was decreased by 33% and 53% compared to it of conventional practice”
e1“In hand weeding, rice yield in hairy vetch only or hairy vetch and barley incorporated fields was attained by 90% and 93% of the conventional practice”
Claim · model-written summary
Hairy vetch and barley incorporation increased weed dry weight by 34%.
- Taxon
- riceOryza sativae1
- Treatment
- hairy vetch and barleye5
- Outcome
- dry weight of weedse4
- Direction
- increasede5
- Value
- 34%e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“while the value in hairy vetch and barley incorporated field was increased by 34%”
e4“the dry weight of weeds in hairy vetch and barley incorporated fields was decreased by 33% and 53% compared to it of conventional practice”
e1“In hand weeding, rice yield in hairy vetch only or hairy vetch and barley incorporated fields was attained by 90% and 93% of the conventional practice”
Claim · model-written summary
Echinochloa crus-galli dry weight significantly increased across treatments despite its lower occurrence density.
- Taxon
- riceOryza sativae1
- Interactor
- Echinochloa crus-galli
Echinochloa crus-gallie6weed - Outcome
- dry weighte6
- Direction
- significantly increasede6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Among all treatments, although occurrence density of Echinochloa crus-galli was lower than another weed species, the dry weight of it significantly increased”
e1“In hand weeding, rice yield in hairy vetch only or hairy vetch and barley incorporated fields was attained by 90% and 93% of the conventional practice”
Claim · model-written summary
Continuous legume green manure can secure productivity, but effective weed management is essential.
- Taxon
- riceOryza sativae1
- Outcome
- effective management of weedse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“These results suggested that although continuous incorporation of proper amount of legume green manure crops was possible to productivity insurance of crop, but to attain it was essential to the effective management of weeds”
e1“In hand weeding, rice yield in hairy vetch only or hairy vetch and barley incorporated fields was attained by 90% and 93% of the conventional practice”
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See all 10 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.