Abstract
Bacterial wilt, caused by Ralstonia solanacearum, is a serious disease for tobacco farmers in the southeastern USA. The lack of suitable land for crop rotation and increased area of production on farms has resulted in shorter rotations, and increased losses due to bacterial wilt. Cover crops are rarely grown immediately before a tobacco crop because soil fumigation for nematode control necessitates early destruction of the cover crop. The microbial activity associated with growing winter cover crops may alter populations of R. solanacearum. This field study evaluated vetch, canola, or rye winter cover crops for suppression of bacterial wilt. Averaged over two tobacco crops, vetch preceding tobacco reduced bacterial wilt disease incidence 33% and increased crop yield and value (37% and 41%, respectively) when compared to a winter fallow. A two-year rotation involving both winter cover and summer rotation crops also showed that winter cover crops increased yields and reduced disease incidence when used following a nonsusceptible summer crop. Soybean rotation followed by a vetch winter cover reduced disease incidence 73% and increased yields 132% when compared to tobacco without a summer soybean rotation and with a bare winter fallow. Data suggest that losses to bacterial wilt can be reduced significantly with use of a vetch winter cover. Accepted for publication 14 February 2007. Published 22 May 2007.
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Claims 8
Claim · model-written summary
Vetch preceding tobacco reduced bacterial wilt incidence by 33% against winter fallow.
- Taxon
- tobacco
Nicotiana tabacume0 - Treatment
- vetch preceding tobaccoe0
- Interactor
- Ralstonia solanacearum
Ralstonia solanacearume1pathogen - Outcome
- bacterial wilt disease incidencee0
- Direction
- reducede0
- Value
- 33%e0
- Comparator
- winter fallowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“vetch preceding tobacco reduced bacterial wilt disease incidence 33% and increased crop yield and value (37% and 41%, respectively) when compared to a winter fallow”
t0“Winter Cover Crops Reduce Bacterial Wilt of Flue-cured Tobacco”
e1“Bacterial wilt, caused by Ralstonia solanacearum”
Claim · model-written summary
Vetch preceding tobacco increased crop yield by 37% against winter fallow.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- vetch preceding tobaccoe0
- Outcome
- crop yielde0
- Direction
- increasede0
- Value
- 37%e0
- Comparator
- winter fallowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“vetch preceding tobacco reduced bacterial wilt disease incidence 33% and increased crop yield and value (37% and 41%, respectively) when compared to a winter fallow”
Claim · model-written summary
Vetch preceding tobacco increased crop value by 41% against winter fallow.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- vetch preceding tobaccoe0
- Outcome
- valuee0
- Direction
- increasede0
- Value
- 41%e0
- Comparator
- winter fallowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“vetch preceding tobacco reduced bacterial wilt disease incidence 33% and increased crop yield and value (37% and 41%, respectively) when compared to a winter fallow”
Claim · model-written summary
Winter cover crops after a nonsusceptible summer crop increased tobacco yields.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- winter cover cropse0
- Outcome
- yieldse0
- Direction
- increasede0
- Qualifier
- following a nonsusceptible summer crope0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“winter cover crops increased yields and reduced disease incidence when used following a nonsusceptible summer crop”
t0“Tobacco”
Claim · model-written summary
Winter cover crops after a nonsusceptible summer crop reduced tobacco bacterial wilt incidence.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- winter cover cropse0
- Interactor
- Ralstonia solanacearumRalstonia solanacearume1pathogen
- Outcome
- disease incidencee0
- Direction
- reducede0
- Qualifier
- following a nonsusceptible summer crope0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“winter cover crops increased yields and reduced disease incidence when used following a nonsusceptible summer crop”
t0“Winter Cover Crops Reduce Bacterial Wilt of Flue-cured Tobacco”
e1“Bacterial wilt, caused by Ralstonia solanacearum”
Claim · model-written summary
Soybean rotation followed by vetch cover reduced tobacco bacterial wilt incidence by 73% against tobacco without soybean rotation and with winter fallow.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- Soybean rotation followed by a vetch winter covere0
- Interactor
- Ralstonia solanacearumRalstonia solanacearume1pathogen
- Outcome
- disease incidencee0
- Direction
- reducede0
- Value
- 73%e0
- Comparator
- tobacco without a summer soybean rotation and with a bare winter fallowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean rotation followed by a vetch winter cover reduced disease incidence 73% and increased yields 132% when compared to tobacco without a summer soybean rotation and with a bare winter fallow”
t0“Winter Cover Crops Reduce Bacterial Wilt of Flue-cured Tobacco”
e1“Bacterial wilt, caused by Ralstonia solanacearum”
Claim · model-written summary
Soybean rotation followed by vetch cover increased tobacco yields by 132% against tobacco without soybean rotation and with winter fallow.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- Soybean rotation followed by a vetch winter covere0
- Outcome
- yieldse0
- Direction
- increasede0
- Value
- 132%e0
- Comparator
- tobacco without a summer soybean rotation and with a bare winter fallowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean rotation followed by a vetch winter cover reduced disease incidence 73% and increased yields 132% when compared to tobacco without a summer soybean rotation and with a bare winter fallow”
Claim · model-written summary
The authors recommend vetch winter cover to reduce bacterial wilt losses in tobacco.
- Taxon
- TobaccoNicotiana tabacumt0
- Treatment
- vetch winter covere0
- Interactor
- Ralstonia solanacearumRalstonia solanacearume1pathogen
- Outcome
- losses to bacterial wilte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“losses to bacterial wilt can be reduced significantly with use of a vetch winter cover”
t0“Winter Cover Crops Reduce Bacterial Wilt of Flue-cured Tobacco”
e1“Bacterial wilt, caused by Ralstonia solanacearum”
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See all 20 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.