Abstract
Current strategies for management of Pratylenchus penetrans in both white potato and tomato consist of the use of fumigant or non-fumigant nematicides or crop rotation. The objective of this study was to determine if double-cropping African marigolds (Tagetes erecta) with potatoes or tomatoes could reduce P. penetrans populations. Plots were 10 m x 3 m arranged in a randomized complete block design with four replications. Treatments included marigolds, potatoes or tomatoes, and natural weedy fallow followed by either potatoes or tomatoes. Nematode populations were sampled before spring planting, between crops in August and after harvest in November. During the 3 years of the study, P. penetrans soil population density declined by an average of 93% from the pre-plant level when marigold was grown in rotation with potato and by 98% when marigold was grown.in rotation with tomato. Weedy fallow preceding potato resulted in an average decline in P. penetrans soil population density of 38%, and a similar decrease (37%) was seen when fallow preceded tomato. There was a significant reduction in the number of P. penetrans found in both potato and tomato roots when the crops followed marigolds. These results suggest that P. penetrans population density may be significantly reduced when marigolds are double-cropped with potatoes or tomatoes.
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Claims 6
Claim · model-written summary
Marigold rotation with potato reduced P. penetrans soil population density by 93% from the pre-plant level.
- Taxon
- potato
Solanum tuberosume1 - Treatment
- marigolde1
- Interactor
- P. penetrans
Pratylenchus penetranse1pest - Outcome
- P. penetrans soil population densitye1
- Direction
- declinede1
- Value
- 93%e1
- Comparator
- pre-plant levele1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“P. penetrans soil population density declined by an average of 93% from the pre-plant level when marigold was grown in rotation with potato and by 98% when marigold was grown.in rotation with tomato”
Claim · model-written summary
Marigold rotation with tomato reduced P. penetrans soil population density by 98% from the pre-plant level.
- Taxon
- tomato
Solanum lycopersicume1 - Treatment
- marigolde1
- Interactor
- P. penetransPratylenchus penetranse1pest
- Outcome
- P. penetrans soil population densitye1
- Direction
- declinede1
- Value
- 98%e1
- Comparator
- pre-plant levele1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“P. penetrans soil population density declined by an average of 93% from the pre-plant level when marigold was grown in rotation with potato and by 98% when marigold was grown.in rotation with tomato”
Claim · model-written summary
Weedy fallow before potato reduced P. penetrans soil population density by 38%.
- Taxon
- potatoSolanum tuberosume2
- Treatment
- Weedy fallowe2
- Interactor
- P. penetransPratylenchus penetranse2pest
- Outcome
- P. penetrans soil population densitye2
- Direction
- declinee2
- Value
- 38%e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Weedy fallow preceding potato resulted in an average decline in P. penetrans soil population density of 38%, and a similar decrease (37%) was seen when fallow preceded tomato”
Claim · model-written summary
Fallow before tomato reduced P. penetrans soil population density by 37%.
- Taxon
- tomatoSolanum lycopersicume2
- Treatment
- fallowe2
- Interactor
- P. penetransPratylenchus penetranse2pest
- Outcome
- P. penetrans soil population densitye2
- Direction
- decreasee2
- Value
- 37%e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Weedy fallow preceding potato resulted in an average decline in P. penetrans soil population density of 38%, and a similar decrease (37%) was seen when fallow preceded tomato”
Claim · model-written summary
Marigold rotation significantly reduced the number of P. penetrans in potato roots.
- Taxon
- potatoSolanum tuberosume3
- Organ / stage
- rootse3
- Treatment
- marigoldse3
- Interactor
- P. penetransPratylenchus penetranse3pest
- Outcome
- number of P. penetranse3
- Direction
- reductione3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“There was a significant reduction in the number of P. penetrans found in both potato and tomato roots when the crops followed marigolds”
Claim · model-written summary
Marigold rotation significantly reduced the number of P. penetrans in tomato roots.
- Taxon
- tomatoSolanum lycopersicume3
- Organ / stage
- rootse3
- Treatment
- marigoldse3
- Interactor
- P. penetransPratylenchus penetranse3pest
- Outcome
- number of P. penetranse3
- Direction
- reductione3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“There was a significant reduction in the number of P. penetrans found in both potato and tomato roots when the crops followed marigolds”
The same questions in other papers
Tagetes · Pratylenchus penetrans · Solanum tuberosum (potato)Results agree
1 paper in the same direction as this paper
- positive
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.