Abstract
Increased agritourism in the state of Virginia has led to an increase in the pumpkin planting acreage for pick-your-own operations across the commonwealth. Virginia pumpkin producers face yield losses from numerous sources, including several fungal diseases. The objective of this research was to compare the efficacy of certified organic fungicides against a conventional fungicide program for the control of powdery mildew, downy mildew, and plectosporium. Cultivar Warty Goblin pumpkins were grown in Rockville, Virginia during the 2016 crop season. Five different treatments (water, Kaligreen, Nordox, Regalia, and Bravo +Quintec/Proline) were assessed for their control of powdery mildew, downy mildew, and plectosporium. Disease observations and treatments were made weekly from August 12 – September 15. Disease ratings for powdery mildew showed that conventional fungicides provided the greatest control, with organic products Kaligreen and Nordox providing next-best control, statistically equivalent in some analyses. Regalia did not provide significantly better disease control than untreated water controls. Plectosporium disease severity was reduced the most in plots receiving conventional fungicides, with Nordox being almost as effective. Kaligreen provided no control of plectosporium. Regalia provided modest control, which in some analyses was significantly better than the untreated control. Downy mildew pressure was extremely limited, and no significant differences in disease incidence were seen among the treatments. In conclusion, several of the tested organic materials proved to be statistically as effective as the conventional fungicides in controlling both powdery mildew and plectosporium, although conventional fungicides provided numerically superior control for all diseases.
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Claims 10
Claim · model-written summary
Conventional fungicides provided the greatest powdery mildew control.
CucurbitaNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Disease ratings for powdery mildew showed that conventional fungicides provided the greatest control”
t0“Pumpkins”
Claim · model-written summary
Kaligreen provided next-best powdery mildew control, statistically equivalent in some analyses.
- Treatment
- Kaligreene0
- Outcome
- controle0
- Direction
- next-beste0
- Qualifier
- statistically equivalent in some analysese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“organic products Kaligreen and Nordox providing next-best control, statistically equivalent in some analyses”
t0“Pumpkins”
Claim · model-written summary
Nordox provided next-best powdery mildew control, statistically equivalent in some analyses.
- Treatment
- Nordoxe0
- Outcome
- controle0
- Direction
- next-beste0
- Qualifier
- statistically equivalent in some analysese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“organic products Kaligreen and Nordox providing next-best control, statistically equivalent in some analyses”
t0“Pumpkins”
Claim · model-written summary
Regalia did not significantly improve disease control over water controls.
- Treatment
- Regaliae0
- Outcome
- disease controle0
- Direction
- did not provide significantly bettere0
- Comparator
- untreated water controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Regalia did not provide significantly better disease control than untreated water controls”
t0“Pumpkins”
Claim · model-written summary
Conventional fungicides reduced plectosporium severity the most.
- Treatment
- conventional fungicidese0
- Outcome
- Plectosporium disease severitye0
- Direction
- reduced the moste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plectosporium disease severity was reduced the most in plots receiving conventional fungicides”
t0“Pumpkins”
Claim · model-written summary
Nordox was almost as effective as conventional fungicides against plectosporium.
- Treatment
- Nordoxe0
- Outcome
- Plectosporium disease severitye1
- Direction
- almost as effectivee0
- Comparator
- conventional fungicidese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with Nordox being almost as effective”
e1“Plectosporium disease severity was reduced the most in plots receiving conventional fungicides”
t0“Pumpkins”
Claim · model-written summary
Kaligreen provided no plectosporium control.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Kaligreen provided no control of plectosporium”
t0“Pumpkins”
Claim · model-written summary
Regalia provided modest plectosporium control, significantly better than untreated control in some analyses.
- Treatment
- Regaliae0
- Outcome
- Plectosporium disease severitye1
- Direction
- modest controle0
- Qualifier
- in some analysese0
- Comparator
- untreated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Regalia provided modest control, which in some analyses was significantly better than the untreated control”
e1“Plectosporium disease severity”
t0“Pumpkins”
Claim · model-written summary
Downy mildew incidence did not differ significantly among treatments under limited pressure.
- Treatment
- treatmentse0
- Outcome
- disease incidencee0
- Direction
- no significant differencese0
- Qualifier
- Downy mildew pressure was extremely limitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Downy mildew pressure was extremely limited, and no significant differences in disease incidence were seen among the treatments”
t0“Pumpkins”
Claim · model-written summary
Conventional fungicides provided numerically superior control for all diseases.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“conventional fungicides provided numerically superior control for all diseases”
t0“Pumpkins”
The same questions in other papers
fungicide · control · Cucurbita (pumpkins)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
fungicide · disease · Cucurbita (pumpkins)Positive and negative results
9 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
7 papers more in this group
See all 11 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.