Abstract
Curative applications of thiophanate-methyl + mancozeb to blighted seed pieces of three potato (Solanum tuberosum) cultivars significantly reduced the amount of surface area colonized by Phytophthora infestans compared with treatment with thiophanate-methyl or no fungicide under laboratory conditions. Percent blighted tuber surface area over six tests averaged 3.5, 11.4, and 21.2% for the three treatments, respectively. Seed pieces inoculated with P. infestans US-8 or US-11 incubated, and then treated with the same fungicides and planted at Oregon and Washington field sites, respectively, had higher emergence across locations for thiophanate-methyl + mancozeb than for thiophanate-methyl (30 versus 12.5%). Emergence of healthy thiophanate-methyl + mancozeb-treated seed pieces averaged 93%. When protective applications of these fungicides, mancozeb, or fludioxinil were made to healthy potato seed pieces prior to inoculation with P. infestans, plant emergence in the greenhouse was significantly increased with thiophanate-methyl + mancozeb compared with fludioxinil (92 versus 36%) in Oregon and with thiophanate-methyl or fludioxinil (90 versus 20 and 24%) in Washington. Inoculation of healthy seed pieces reduced plant stand in all greenhouse tests; however, treatment with thiophanate-methyl + mancozeb or mancozeb alone prior to inoculation resulted in sprout emergence similar to that of the noninoculated control. In a late blight management program, treatment of seed pieces with a registered fungicide that has activity against P. infestans contributes to an increase in plant emergence and improved crop uniformity. However, for maximum benefit, the fungicide must be in place before coming in contact with the pathogen.
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Claims 13
Claim · model-written summary
Curative thiophanate-methyl plus mancozeb significantly reduced P. infestans colonized seed-piece area versus thiophanate-methyl or no fungicide.
- Taxon
- potato
Solanum tuberosume0 - Treatment
- thiophanate-methyl + mancozebe0
- Interactor
- Phytophthora infestans
Phytophthora infestanse0pathogen - Outcome
- surface area colonized by Phytophthora infestanse0
- Direction
- reducede0
- Comparator
- thiophanate-methyl or no fungicidee0
- Setting
- laboratory conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Curative applications of thiophanate-methyl + mancozeb to blighted seed pieces of three potato (Solanum tuberosum) cultivars significantly reduced the amount of surface area colonized by Phytophthora infestans compared with treatment with thiophanate-methyl or no fungicide under laboratory conditions”
Claim · model-written summary
Blighted surface area averaged 3.5% with the curative combination.
- Taxon
- potatoSolanum tuberosumt0
- Interactor
- Phytophthora infestansPhytophthora infestanst0pathogen
- Outcome
- Percent blighted tuber surface areae0
- Value
- 3.5e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Percent blighted tuber surface area over six tests averaged 3.5, 11.4, and 21.2% for the three treatments, respectively”
t0“Potato Seed Piece Fungicides on Tuber-borne Phytophthora infestans”
Claim · model-written summary
Blighted surface area averaged 11.4% with thiophanate-methyl alone.
- Taxon
- PotatoSolanum tuberosumt0
- Interactor
- Phytophthora infestansPhytophthora infestanst0pathogen
- Outcome
- Percent blighted tuber surface areae0
- Value
- 11.4e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Percent blighted tuber surface area over six tests averaged 3.5, 11.4, and 21.2% for the three treatments, respectively”
t0“Potato Seed Piece Fungicides on Tuber-borne Phytophthora infestans”
Claim · model-written summary
Blighted surface area averaged 21.2% without fungicide.
- Taxon
- PotatoSolanum tuberosumt0
- Interactor
- Phytophthora infestansPhytophthora infestanst0pathogen
- Outcome
- Percent blighted tuber surface areae0
- Value
- 21.2%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Percent blighted tuber surface area over six tests averaged 3.5, 11.4, and 21.2% for the three treatments, respectively”
t0“Potato Seed Piece Fungicides on Tuber-borne Phytophthora infestans”
Claim · model-written summary
Curative combination treatment raised field emergence to 30% versus 12.5% with thiophanate-methyl.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- thiophanate-methyl + mancozebe0
- Interactor
- Phytophthora infestansPhytophthora infestanst0pathogen
- Outcome
- emergencee0
- Direction
- highere0
- Value
- 30e0
- Qualifier
- 12.5%e0
- Comparator
- thiophanate-methyle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“had higher emergence across locations for thiophanate-methyl + mancozeb than for thiophanate-methyl (30 versus 12.5%)”
t0“Potato Seed Piece Fungicides on Tuber-borne Phytophthora infestans”
Claim · model-written summary
Healthy combination-treated seed pieces had 93% emergence.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- thiophanate-methyl + mancozebe0
- Outcome
- Emergencee0
- Value
- 93%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Emergence of healthy thiophanate-methyl + mancozeb-treated seed pieces averaged 93%”
t0“Potato”
Claim · model-written summary
Protective combination treatment raised Oregon greenhouse emergence to 92% versus 36% with fludioxinil.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- thiophanate-methyl + mancozebe0
- Interactor
- Phytophthora infestansPhytophthora infestanst0pathogen
- Outcome
- plant emergencee0
- Direction
- increasede0
- Value
- 92e0
- Qualifier
- 36%e0
- Comparator
- fludioxinile0
- Setting
- Oregone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant emergence in the greenhouse was significantly increased with thiophanate-methyl + mancozeb compared with fludioxinil (92 versus 36%) in Oregon”
t0“Potato Seed Piece Fungicides on Tuber-borne Phytophthora infestans”
Claim · model-written summary
Protective combination treatment raised Washington greenhouse emergence to 90% versus 20% with thiophanate-methyl.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- thiophanate-methyl + mancozebe0
- Interactor
- Phytophthora infestansPhytophthora infestanst0pathogen
- Outcome
- plant emergencee0
- Direction
- increasede0
- Value
- 90e0
- Qualifier
- 20e0
- Comparator
- thiophanate-methyle0
- Setting
- Washingtone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant emergence in the greenhouse was significantly increased with thiophanate-methyl + mancozeb compared with fludioxinil (92 versus 36%) in Oregon and with thiophanate-methyl or fludioxinil (90 versus 20 and 24%) in Washington”
t0“Effect of Registered Potato Seed Piece Fungicides on Tuber-borne Phytophthora infestans”
Claim · model-written summary
Protective combination treatment raised Washington greenhouse emergence to 90% versus 24% with fludioxinil.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- thiophanate-methyl + mancozebe0
- Interactor
- Phytophthora infestansPhytophthora infestanst0pathogen
- Outcome
- plant emergencee0
- Direction
- increasede0
- Value
- 90e0
- Qualifier
- 24%e0
- Comparator
- fludioxinile0
- Setting
- Washingtone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant emergence in the greenhouse was significantly increased with thiophanate-methyl + mancozeb compared with fludioxinil (92 versus 36%) in Oregon and with thiophanate-methyl or fludioxinil (90 versus 20 and 24%) in Washington”
t0“Effect of Registered Potato Seed Piece Fungicides on Tuber-borne Phytophthora infestans”
Claim · model-written summary
P. infestans inoculation reduced plant stand in all greenhouse tests.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- Inoculation of healthy seed piecese0
- Interactor
- Phytophthora infestansPhytophthora infestanst0pathogen
- Outcome
- plant stande0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculation of healthy seed pieces reduced plant stand in all greenhouse tests”
t0“Potato Seed Piece Fungicides on Tuber-borne Phytophthora infestans”
Claim · model-written summary
Pretreatment with combination fungicide restored sprout emergence near noninoculated control.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- thiophanate-methyl + mancozebe0
- Interactor
- Phytophthora infestansPhytophthora infestanst0pathogen
- Outcome
- sprout emergencee0
- Direction
- similar toe0
- Comparator
- noninoculated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“treatment with thiophanate-methyl + mancozeb or mancozeb alone prior to inoculation resulted in sprout emergence similar to that of the noninoculated control”
t0“Potato Seed Piece Fungicides on Tuber-borne Phytophthora infestans”
Claim · model-written summary
Pretreatment with mancozeb alone restored sprout emergence near noninoculated control.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- mancozeb alonee0
- Interactor
- Phytophthora infestansPhytophthora infestanst0pathogen
- Outcome
- sprout emergencee0
- Direction
- similar toe0
- Comparator
- noninoculated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“treatment with thiophanate-methyl + mancozeb or mancozeb alone prior to inoculation resulted in sprout emergence similar to that of the noninoculated control”
t0“Potato Seed Piece Fungicides on Tuber-borne Phytophthora infestans”
Claim · model-written summary
The authors recommend applying active seed-piece fungicide before contact with the pathogen.
- Taxon
- PotatoSolanum tuberosumt0
- Interactor
- Phytophthora infestansPhytophthora infestanst0pathogen
- Outcome
- fungicide must be in place before coming in contact with the pathogene0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for maximum benefit, the fungicide must be in place before coming in contact with the pathogen”
t0“Potato Seed Piece Fungicides on Tuber-borne Phytophthora infestans”
The same questions in other papers
mancozeb · Phytophthora infestans · Solanum tuberosum (potato)Positive and negative results
19 papers in the same direction as this paper · 3 in the opposite direction
- negative
- no effect
- negative
19 papers more in this group
See all 23 papers →inoculation · Phytophthora infestans · Solanum tuberosum (potato)Positive and negative results
15 papers in the same direction as this paper · 24 in the opposite direction
- positive
- positive
- positive
36 papers more in this group
See all 40 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.