Abstract
The downy mildew disease of cucurbits is considered the most economically damaging disease of Cucurbitaceae worldwide. The causal agent, Pseudoperonospora cubensis (Berkeley & Curtis), may cause complete crop losses of cucurbits. Few commercial cucurbit cultivars are resistant to this disease. Commercially, P. cubensis is controlled primarily with synthetic fungicides that inhibit or eliminate the pathogen. Several biological agents have also been identified that provide some level of control. In our study, foliar applications of three strains of Trichoderma harzianum and two native strains of Bacillus subtilis were evaluated for the control of the disease on cucumber plants grown under commercial greenhouse conditions. The study was conducted using a completely randomized design with six individual treatments during two production cycles: fall 2015 and spring 2016. The response variables included disease incidence and severity, plant height, total yield, fruit quality, and weight. B. subtilis provided the best control over the incidence and severity of the disease in both production cycles. Interestingly, while T. harzianum was less effective at controlling the disease, it enhanced plant growth and productivity, and produced a higher number of better-quality fruits per plot. This increased yield with higher quality fruits may result in higher profit for the growers.
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Claims 4
Claim · model-written summary
B. subtilis gave the best control of downy mildew incidence and severity in both cycles.
- Taxon
- Cucumber Plants
Cucumis sativust0 - Treatment
- B. subtilise0
- Interactor
- B. subtilis
Bacillus subtilise0biocontrol_agent - Outcome
- incidence and severity of the diseasee0
- Direction
- best controle0
Not reportedSecond interactorComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“B. subtilis provided the best control over the incidence and severity of the disease in both production cycles.”
t0“Cucumber Plants”
Claim · model-written summary
T. harzianum controlled downy mildew less effectively.
- Taxon
- Cucumber PlantsCucumis sativust0
- Treatment
- T. harzianume0
- Interactor
- T. harzianum
Trichoderma harzianume0biocontrol_agent - Outcome
- controlling the diseasee0
- Direction
- less effectivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“T. harzianum was less effective at controlling the disease”
t0“Cucumber Plants”
Claim · model-written summary
T. harzianum enhanced cucumber growth and productivity.
- Taxon
- Cucumber PlantsCucumis sativust0
- Treatment
- T. harzianume0
- Interactor
- T. harzianumTrichoderma harzianume0biocontrol_agent
- Outcome
- plant growth and productivitye0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“T. harzianum was less effective at controlling the disease, it enhanced plant growth and productivity”
t0“Cucumber Plants”
Claim · model-written summary
T. harzianum produced more fruits per plot with better quality.
- Taxon
- Cucumber PlantsCucumis sativust0
- Treatment
- T. harzianume0
- Interactor
- T. harzianumTrichoderma harzianume0biocontrol_agent
- Outcome
- number of better-quality fruits per plote0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“T. harzianum was less effective at controlling the disease, it enhanced plant growth and productivity, and produced a higher number of better-quality fruits per plot.”
t0“Cucumber Plants”
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See all 9 papers →Bacillus subtilis · disease · Cucumis sativus (cucumber)Results agree
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See all 9 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.