Abstract
Microplots were infested with combinations of the fungus Verticillium dahliae and Pratylenchus penetrans and P. scribneri to test for individual and combined effects of these organisms on potato yield and nematode reproduction. Verticillium dahliae alone caused yield losses in all 3 years of the experiment, and the interaction between P. penetrans and V. dahliae was significant (P </= 0.05) in 2 years. Pratylenchus penetrans alone caused yield losses in 2 years and P. scribneri alone caused yield losses in 1 year. No two-way or three-way interaction was found involving P. scribneri. In 1987, reproduction for low densities of P. penetrans was 5 times higher when P. scribneri was also present than when it was absent, and 3.5 times higher in 1988. In nematode species mixtures, reproduction of P. scribneri was decreased by V. dahliae in 1987-88. The final population density of P. scribneri was negatively affected by V. dahliae and positively related to the initial proportion of P. scribneri to P. penetrans. In species mixtures with proportions of P. penetrans ranging from 0.1 to 0.5, reproduction of P. penetrans was negatively affected by V. dahliae and decreased linearly in relation to the increase in the initial proportion of P. penetrans in both years. The final population density of P. penetrans was affected only by V. dahliae.
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Claims 13
Claim · model-written summary
Verticillium dahliae alone caused potato yield losses in all three years.
- Taxon
- potato
Solanum tuberosume0 - Treatment
- Verticillium dahliae alonee1
- Interactor
- Verticillium dahliae
Verticillium dahliaee1pathogen - Outcome
- yielde1
- Direction
- lossese1
- Setting
- Microplotse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Microplots were infested with combinations of the fungus Verticillium dahliae and Pratylenchus penetrans and P. scribneri to test for individual and combined effects of these organisms on potato yield and nematode reproduction.”
e1“Verticillium dahliae alone caused yield losses in all 3 years of the experiment, and the interaction between P. penetrans and V. dahliae was significant (P </= 0.05) in 2 years”
Claim · model-written summary
The interaction between P. penetrans and V. dahliae was significant in two years.
- Taxon
- potatoSolanum tuberosume0
- Interactor
- P. penetrans
Pratylenchus penetranse1pathogen - Second interactor
- V. dahliaeVerticillium dahliaee1pathogen
- Outcome
- interaction between P. penetrans and V. dahliaee1
- Qualifier
- P </= 0.05e1
- Setting
- Microplotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Microplots were infested with combinations of the fungus Verticillium dahliae and Pratylenchus penetrans and P. scribneri to test for individual and combined effects of these organisms on potato yield and nematode reproduction.”
e1“Verticillium dahliae alone caused yield losses in all 3 years of the experiment, and the interaction between P. penetrans and V. dahliae was significant (P </= 0.05) in 2 years”
Claim · model-written summary
Pratylenchus penetrans alone caused potato yield losses in two years.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- Pratylenchus penetrans alonee2
- Interactor
- Pratylenchus penetransPratylenchus penetranse2pathogen
- Outcome
- yielde2
- Direction
- lossese2
- Setting
- Microplotse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Microplots were infested with combinations of the fungus Verticillium dahliae and Pratylenchus penetrans and P. scribneri to test for individual and combined effects of these organisms on potato yield and nematode reproduction.”
e2“Pratylenchus penetrans alone caused yield losses in 2 years and P. scribneri alone caused yield losses in 1 year”
Claim · model-written summary
P. scribneri alone caused potato yield losses in one year.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- P. scribneri alonee2
- Interactor
- P. scribneriPratylenchus scribnerie2pathogen
- Outcome
- yielde2
- Direction
- lossese2
- Setting
- Microplotse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Microplots were infested with combinations of the fungus Verticillium dahliae and Pratylenchus penetrans and P. scribneri to test for individual and combined effects of these organisms on potato yield and nematode reproduction.”
e2“Pratylenchus penetrans alone caused yield losses in 2 years and P. scribneri alone caused yield losses in 1 year”
Claim · model-written summary
No two-way or three-way interaction involving P. scribneri was found on potato.
- Taxon
- potatoSolanum tuberosume0
- Interactor
- P. scribneriPratylenchus scribnerie3pathogen
- Outcome
- two-way or three-way interactione3
- Setting
- Microplotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Microplots were infested with combinations of the fungus Verticillium dahliae and Pratylenchus penetrans and P. scribneri to test for individual and combined effects of these organisms on potato yield and nematode reproduction.”
e3“No two-way or three-way interaction was found involving P. scribneri”
Claim · model-written summary
In 1987, reproduction of low-density P. penetrans was five times higher with P. scribneri present than absent.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- P. scribneri was also presente4
- Interactor
- P. penetransPratylenchus penetranse4pathogen
- Second interactor
- P. scribneriPratylenchus scribnerie4pathogen
- Outcome
- reproduction for low densities of P. penetranse4
- Direction
- highere4
- Value
- 5 timese4
- Qualifier
- In 1987e4
- Comparator
- when it was absente4
- Setting
- Microplotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Microplots were infested with combinations of the fungus Verticillium dahliae and Pratylenchus penetrans and P. scribneri to test for individual and combined effects of these organisms on potato yield and nematode reproduction.”
e4“In 1987, reproduction for low densities of P. penetrans was 5 times higher when P. scribneri was also present than when it was absent, and 3.5 times higher in 1988”
Claim · model-written summary
In 1988, reproduction of low-density P. penetrans was 3.5 times higher with P. scribneri present than absent.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- P. scribneri was also presente4
- Interactor
- P. penetransPratylenchus penetranse4pathogen
- Second interactor
- P. scribneriPratylenchus scribnerie4pathogen
- Outcome
- reproduction for low densities of P. penetranse4
- Direction
- highere4
- Value
- 3.5 timese4
- Qualifier
- in 1988e4
- Comparator
- when it was absente4
- Setting
- Microplotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Microplots were infested with combinations of the fungus Verticillium dahliae and Pratylenchus penetrans and P. scribneri to test for individual and combined effects of these organisms on potato yield and nematode reproduction.”
e4“In 1987, reproduction for low densities of P. penetrans was 5 times higher when P. scribneri was also present than when it was absent, and 3.5 times higher in 1988”
Claim · model-written summary
Verticillium dahliae decreased reproduction of P. scribneri in 1987-88.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- V. dahliaee5
- Interactor
- P. scribneriPratylenchus scribnerie5pathogen
- Second interactor
- V. dahliaeVerticillium dahliaee5pathogen
- Outcome
- reproduction of P. scribnerie5
- Direction
- decreasede5
- Qualifier
- 1987-88e5
- Setting
- Microplotse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Microplots were infested with combinations of the fungus Verticillium dahliae and Pratylenchus penetrans and P. scribneri to test for individual and combined effects of these organisms on potato yield and nematode reproduction.”
e5“reproduction of P. scribneri was decreased by V. dahliae in 1987-88. The final population density of P. scribneri was negatively affected by V. dahliae and positively related to the initial proportion of P. scribneri to P. penetrans”
Claim · model-written summary
Verticillium dahliae negatively affected the final population density of P. scribneri.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- V. dahliaee5
- Interactor
- P. scribneriPratylenchus scribnerie5pathogen
- Second interactor
- V. dahliaeVerticillium dahliaee5pathogen
- Outcome
- final population density of P. scribnerie5
- Direction
- decreaseinferrede5
- Setting
- Microplotse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Microplots were infested with combinations of the fungus Verticillium dahliae and Pratylenchus penetrans and P. scribneri to test for individual and combined effects of these organisms on potato yield and nematode reproduction.”
e5“reproduction of P. scribneri was decreased by V. dahliae in 1987-88. The final population density of P. scribneri was negatively affected by V. dahliae and positively related to the initial proportion of P. scribneri to P. penetrans”
Claim · model-written summary
Final population density of P. scribneri was positively related to its initial proportion relative to P. penetrans.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- initial proportion of P. scribneri to P. penetranse5
- Interactor
- P. scribneriPratylenchus scribnerie5pathogen
- Second interactor
- P. penetransPratylenchus penetranse5pathogen
- Outcome
- final population density of P. scribnerie5
- Direction
- increaseinferrede5
- Setting
- Microplotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Microplots were infested with combinations of the fungus Verticillium dahliae and Pratylenchus penetrans and P. scribneri to test for individual and combined effects of these organisms on potato yield and nematode reproduction.”
e5“reproduction of P. scribneri was decreased by V. dahliae in 1987-88. The final population density of P. scribneri was negatively affected by V. dahliae and positively related to the initial proportion of P. scribneri to P. penetrans”
Claim · model-written summary
Verticillium dahliae negatively affected reproduction of P. penetrans in mixtures with P. penetrans proportions of 0.1 to 0.5.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- V. dahliaee6
- Interactor
- P. penetransPratylenchus penetranse6pathogen
- Second interactor
- V. dahliaeVerticillium dahliaee6pathogen
- Outcome
- reproduction of P. penetranse6
- Direction
- decreaseinferrede6
- Qualifier
- species mixtures with proportions of P. penetrans ranging from 0.1 to 0.5e6
- Setting
- Microplotse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Microplots were infested with combinations of the fungus Verticillium dahliae and Pratylenchus penetrans and P. scribneri to test for individual and combined effects of these organisms on potato yield and nematode reproduction.”
e6“In species mixtures with proportions of P. penetrans ranging from 0.1 to 0.5, reproduction of P. penetrans was negatively affected by V. dahliae and decreased linearly in relation to the increase in the initial proportion of P. penetrans in both years. The final population density of P. penetrans was affected only by V. dahliae”
Claim · model-written summary
Reproduction of P. penetrans decreased linearly as its initial proportion increased in mixtures.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- initial proportion of P. penetranse6
- Interactor
- P. penetransPratylenchus penetranse6pathogen
- Outcome
- reproduction of P. penetranse6
- Direction
- decreasede6
- Setting
- Microplotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Microplots were infested with combinations of the fungus Verticillium dahliae and Pratylenchus penetrans and P. scribneri to test for individual and combined effects of these organisms on potato yield and nematode reproduction.”
e6“In species mixtures with proportions of P. penetrans ranging from 0.1 to 0.5, reproduction of P. penetrans was negatively affected by V. dahliae and decreased linearly in relation to the increase in the initial proportion of P. penetrans in both years. The final population density of P. penetrans was affected only by V. dahliae”
Claim · model-written summary
Final population density of P. penetrans was affected only by Verticillium dahliae.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- V. dahliaee6
- Interactor
- P. penetransPratylenchus penetranse6pathogen
- Second interactor
- V. dahliaeVerticillium dahliaee6pathogen
- Outcome
- final population density of P. penetranse6
- Setting
- Microplotse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Microplots were infested with combinations of the fungus Verticillium dahliae and Pratylenchus penetrans and P. scribneri to test for individual and combined effects of these organisms on potato yield and nematode reproduction.”
e6“In species mixtures with proportions of P. penetrans ranging from 0.1 to 0.5, reproduction of P. penetrans was negatively affected by V. dahliae and decreased linearly in relation to the increase in the initial proportion of P. penetrans in both years. The final population density of P. penetrans was affected only by V. dahliae”
The same questions in other papers
Pratylenchus penetrans · yield · Solanum tuberosum (potato)Results differ
4 papers in the same direction as this paper
- negative
- no effect
- negative
1 paper more in this group
See all 5 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.