Abstract
Onion wilt is an endemic disease in producing farms of Michoacán, Mexico that can reduce yields up to 25-30%. From onion plants with wilting symptoms, a monosporic isolate of the fungus Fusarium spp. was obtained, and its pathogenicity was verified. The fungus was morphologically and molecularly identified as Fusarium sp. Also, Fusarium sp. susceptibility to biological, botanical, and chemical pesticides was determined through four different bioassays. In experiment I, Trichoderma spp. in vitro antibiosis was tested using the cellophane technique. In Trials II and III, the in vitro effect of botanical and chemical fungicides on the pathogen was evaluated through the amended potato dextrose agar (PDA) culture technique. In Study IV, the biological efficacy of the products previously selected during in vitro assays was evaluated under greenhouse conditions. During the antibiosis trials, the commercial strain of Trichoderma virens (PHC Root Mate®) inhibited 33.3% of Fusarium sp. mycelial growth. Among botanical pesticides, cinnamon-neem extract (NeemAcar®) at doses of 0.06, 0.08- and 0.10-mL L-1 inhibited 100% mycelial growth of Fusarium sp. The fungicides benomyl, prochloraz, and pyraclostrobin completely suppressed Fusarium sp. development. Under greenhouse conditions, the incidence of wilt of plants treated with Trichoderma spp. and botanical extracts applied individually and in combination did not present significant differences from chemical fungicides treated. These results will help to develop an integrated disease management program for onion wilt.
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Claims 6
Claim · model-written summary
Fusarium isolate pathogenicity was verified in onion.
- Taxon
- onion
Allium cepae0 - Outcome
- pathogenicitye0
FusariumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“From onion plants with wilting symptoms, a monosporic isolate of the fungus Fusarium spp. was obtained, and its pathogenicity was verified”
Claim · model-written summary
The fungus was identified as Fusarium sp.
- Taxon
- onionAllium cepat0
- Outcome
- identified as Fusarium sp.e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The fungus was morphologically and molecularly identified as Fusarium sp.”
t0“onion”
Claim · model-written summary
Trichoderma virens inhibited Fusarium mycelial growth by 33.3% in vitro.
- Taxon
- onionAllium cepat0
- Treatment
- Trichoderma virens (PHC Root Mate®)e0
- Second interactor
- Trichoderma virensTrichoderma virense0biocontrol_agent
- Outcome
- Fusarium sp. mycelial growthe0
- Direction
- inhibitede0
- Value
- 33.3%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Trichoderma virens (PHC Root Mate®) inhibited 33.3% of Fusarium sp. mycelial growth”
t0“onion”
Claim · model-written summary
Cinnamon-neem extract at listed doses inhibited all Fusarium mycelial growth.
- Taxon
- onionAllium cepat0
- Treatment
- cinnamon-neem extract (NeemAcar®) at doses of 0.06, 0.08- and 0.10-mL L-1e0
- Outcome
- mycelial growth of Fusarium sp.e0
- Direction
- inhibitede0
- Value
- 100%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cinnamon-neem extract (NeemAcar®) at doses of 0.06, 0.08- and 0.10-mL L-1 inhibited 100% mycelial growth of Fusarium sp.”
t0“onion”
Claim · model-written summary
Benomyl, prochloraz, and pyraclostrobin completely suppressed Fusarium development.
- Taxon
- onionAllium cepat0
- Treatment
- benomyl, prochloraz, and pyraclostrobine0
- Outcome
- Fusarium sp. developmente0
- Direction
- completely suppressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The fungicides benomyl, prochloraz, and pyraclostrobin completely suppressed Fusarium sp. development”
t0“onion”
Claim · model-written summary
Greenhouse wilt incidence with Trichoderma and botanical extracts did not differ significantly from chemical fungicides.
- Taxon
- onionAllium cepat0
- Treatment
- Trichoderma spp. and botanical extracts applied individually and in combinatione0
- Outcome
- incidence of wilte0
- Direction
- did not present significant differencese0
- Comparator
- chemical fungicides treatede0
- Setting
- greenhouse conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under greenhouse conditions, the incidence of wilt of plants treated with Trichoderma spp. and botanical extracts applied individually and in combination did not present significant differences from chemical fungicides treated”
t0“onion”
The same questions in other papers
Trichoderma · disease · Allium cepa (onion)Positive and negative results
3 reporting no difference from an alternative
- positive
- positive
- positive
Trichoderma virens · Fusarium · Allium cepa (onion)Results agree
1 paper in the same direction as this paper
- positive
prochloraz · Fusarium · Allium cepa (onion)Results agree
1 paper in the same direction as this paper
- positive
botanical · disease · Allium cepa (onion)Positive and negative results
7 papers in the same direction as this paper · 21 reporting no difference from an alternative
- positive
- positive
- positive
25 papers more in this group
See all 29 papers →botanical · Fusarium · Allium cepa (onion)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.