Abstract
ABSTRACT Field experiments were conducted during spring 2014 and fall and spring 2015 to determine the effect of fresh mulch on the development of Phytophthora infestans epidemics, in Lapa Municipality, Parana State, southern Brazil. The used cultivars were ‘Agata’, susceptible, and ‘BRS Ana’, moderately susceptible. The main treatment consisted in manually applying a 10cm-thick layer of fresh mulch when potato sprouts were emerging. Fresh mulch was prepared with plants available at that time of the year. For the spring experiments, fresh mulch was a mixture of oats, rye grass and wild radish (60 t/ha) and for the fall experiment, semi-ripe elephant grass (90 t/ha). Plots consisted of six 10m-long rows, spaced at 0.8m, containing 28 plants per row. Experimental design was in completely randomized blocks with four replicates. Natural inoculum was adopted. Percentage of leaf area was weekly estimated until the end of the plant cycle and the area under the disease progress curve (AUDPC) was calculated. Application of fresh mulch significantly reduced AUDPC by 32.1%, 12.4% and 23.1%, compared to control in all seasons, for ‘BRS Ana’ and by 26.1%, 2.8% and 12.0% for ‘Agata’. Application of fresh mulch showed to be a promising practice for the integrated management of late blight and for the protection of yields, especially in periods more favorable to the development of the disease. More detailed studies should be conducted on the plant type and amount of fresh mulch to be used, as well as on the possibility of reducing concentrations or increasing intervals between fungicide sprays.
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Claims 7
Claim · model-written summary
Fresh mulch reduced BRS Ana late blight AUDPC by 32.1% in the first season.
- Taxon
- potato
Solanum tuberosume1 - Material
- ‘BRS Ana’e0
- Treatment
- fresh mulche0
- Outcome
- AUDPCe0
- Direction
- reducede0
- Value
- 32.1%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of fresh mulch significantly reduced AUDPC by 32.1%, 12.4% and 23.1%, compared to control in all seasons, for ‘BRS Ana’ and by 26.1%, 2.8% and 12.0% for ‘Agata’.”
e1“when potato sprouts were emerging”
Claim · model-written summary
Fresh mulch reduced BRS Ana late blight AUDPC by 12.4% in the second season.
- Taxon
- potatoSolanum tuberosume1
- Material
- ‘BRS Ana’e0
- Treatment
- fresh mulche0
- Outcome
- AUDPCe0
- Direction
- reducede0
- Value
- 12.4%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of fresh mulch significantly reduced AUDPC by 32.1%, 12.4% and 23.1%, compared to control in all seasons, for ‘BRS Ana’ and by 26.1%, 2.8% and 12.0% for ‘Agata’.”
e1“when potato sprouts were emerging”
Claim · model-written summary
Fresh mulch reduced BRS Ana late blight AUDPC by 23.1% in the third season.
- Taxon
- potatoSolanum tuberosume1
- Material
- ‘BRS Ana’e0
- Treatment
- fresh mulche0
- Outcome
- AUDPCe0
- Direction
- reducede0
- Value
- 23.1%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of fresh mulch significantly reduced AUDPC by 32.1%, 12.4% and 23.1%, compared to control in all seasons, for ‘BRS Ana’ and by 26.1%, 2.8% and 12.0% for ‘Agata’.”
e1“when potato sprouts were emerging”
Claim · model-written summary
Fresh mulch reduced Agata late blight AUDPC by 26.1% in the first season.
- Taxon
- potatoSolanum tuberosume1
- Material
- ‘Agata’e0
- Treatment
- fresh mulche0
- Outcome
- AUDPCe0
- Direction
- reducede0
- Value
- 26.1%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of fresh mulch significantly reduced AUDPC by 32.1%, 12.4% and 23.1%, compared to control in all seasons, for ‘BRS Ana’ and by 26.1%, 2.8% and 12.0% for ‘Agata’.”
e1“when potato sprouts were emerging”
Claim · model-written summary
Fresh mulch reduced Agata late blight AUDPC by 2.8% in the second season.
- Taxon
- potatoSolanum tuberosume1
- Material
- ‘Agata’e0
- Treatment
- fresh mulche0
- Outcome
- AUDPCe0
- Direction
- reducede0
- Value
- 2.8%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of fresh mulch significantly reduced AUDPC by 32.1%, 12.4% and 23.1%, compared to control in all seasons, for ‘BRS Ana’ and by 26.1%, 2.8% and 12.0% for ‘Agata’.”
e1“when potato sprouts were emerging”
Claim · model-written summary
Fresh mulch reduced Agata late blight AUDPC by 12.0% in the third season.
- Taxon
- potatoSolanum tuberosume1
- Material
- ‘Agata’e0
- Treatment
- fresh mulche0
- Outcome
- AUDPCe0
- Direction
- reducede0
- Value
- 12.0%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of fresh mulch significantly reduced AUDPC by 32.1%, 12.4% and 23.1%, compared to control in all seasons, for ‘BRS Ana’ and by 26.1%, 2.8% and 12.0% for ‘Agata’.”
e1“when potato sprouts were emerging”
Claim · model-written summary
The authors considered fresh mulch promising for late blight management and yield protection.
- Taxon
- potatoSolanum tuberosume1
- Outcome
- promising practice for the integrated management of late blight and for the protection of yieldse0
- Qualifier
- especially in periods more favorable to the development of the diseasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of fresh mulch showed to be a promising practice for the integrated management of late blight and for the protection of yields, especially in periods more favorable to the development of the disease.”
e1“when potato sprouts were emerging”
The same questions in other papers
mulching · disease · Solanum tuberosum (potato)Positive and negative results
7 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
6 papers more in this group
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.