Abstract
This study aims to determine the effect of the spore density of Trichoderma asperellum and the concentration of Black Curcuma extract and their interaction on the intensity of downy mildew and the growth of maize. This research was conducted at the Integrated Field Laboratory of the Faculty of Agriculture and the Laboratory of Plant Diseases, Department of Agrotechnology, Faculty of Agriculture, University of Lampung from March 2019 to May 2019. The design used in this experiment was a randomized block design, which was arranged in factorial experiment. The first factor was the treatment of T. asperellum which consists of 3 levels, namely without T. asperellum (T0), T. asperellum with a spore density of 106 spores / mL (T1), and T. asperellum with a density of 108 spores / mL (T2), applied in rhizosphere. The second factor was the concentration of Black Curcuma (Curcuma aeruginosa) extract which consists of 4 levels, namely 0% (F0), 20% (F1), 40% (F2) and 60% (F3), applied at the growing point of corn. The variables observed were incubation period, disease incidence, disease severity, plant height and stover weight. The observational data obtained were analyzed using analysis of variance and then tested by the LSD test at the 5% level. The results showed that the treatment of T. asperellum density of 108 spores / mL can reduce the incidence and severity of downy mildew. Treatment of T. asperellum of the density of 106 spores / mL can increase the dry weight of plant shoots and T. aspereellum density of 108 spores / mL can increase the dry weight of plant roots. Treatment of Black Curcuma extract with a concentration of 40% can reduce disease incidence, disease severity and increase stover weight. The best density of T. asperellum in suppressing downy mildew disease was the density of 108 spores / mL and the best concentration of Black Curcuma extract in controlling downy mildew, namely a concentration of 40%.
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Claims 5
Claim · model-written summary
The high-density Trichoderma treatment reduced downy mildew incidence and severity.
- Taxon
- Corn
Zea mays subsp. mayst0 - Treatment
- T. asperellum density of 108 spores / mLe0
- Interactor
- T. asperellum
Trichoderma asperellume0biocontrol_agent - Outcome
- incidence and severity of downy mildewe0
- Direction
- reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“treatment of T. asperellum density of 108 spores / mL can reduce the incidence and severity of downy mildew.”
t0“Corn”
Claim · model-written summary
The lower-density Trichoderma treatment increased shoot dry weight.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- T. asperellum of the density of 106 spores / mLe0
- Interactor
- T. asperellumTrichoderma asperellume0biocontrol_agent
- Outcome
- dry weight of plant shootse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment of T. asperellum of the density of 106 spores / mL can increase the dry weight of plant shoots”
t0“Corn”
Claim · model-written summary
The high-density Trichoderma treatment increased root dry weight.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- T. aspereellum density of 108 spores / mLe0
- Interactor
- T. aspereellume0biocontrol_agent
- Outcome
- dry weight of plant rootse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“T. aspereellum density of 108 spores / mL can increase the dry weight of plant roots.”
t0“Corn”
Claim · model-written summary
Forty percent Black Curcuma extract reduced downy mildew incidence and severity.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- Black Curcuma extract with a concentration of 40%e0
- Outcome
- disease incidence, disease severitye0
- Direction
- reducee0
Not reportedInteractorComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment of Black Curcuma extract with a concentration of 40% can reduce disease incidence, disease severity and increase stover weight.”
t0“Corn”
Claim · model-written summary
Forty percent Black Curcuma extract increased stover weight.
- Taxon
- CornZea mays subsp. mayst0
- Treatment
- Black Curcuma extract with a concentration of 40%e0
- Outcome
- stover weighte0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment of Black Curcuma extract with a concentration of 40% can reduce disease incidence, disease severity and increase stover weight.”
t0“Corn”
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