Abstract
Rianosa R, Hartal H, Setyowati N. 2020. Effectiveness of the Ageratum (Ageratum conyzoides) leaf extract as botanical fungicide against moler diseases of shallot. Jurnal Lahan Suboptimal: Journal of Suboptimal Lands 9(1): 1-10. Moler is a major disease of onion caused by Fusarium oxysporum f. sp. cepae. Application of synthetic fungicides in the long-term has a negative effect to the environment. Weed leaves of Ageratum (Ageratum conyzoides) have potential to be an anti-fungal, anti-bacterial as well as anti-cancer. This study aimed to determine the best concentration of Ageratum leaf extract to control twisted disease and to compare the effectiveness of botanical fungicide and synthetic fungicide. The research was conducted in June - September 2018 at the Plant Protection Laboratory and greenhouse, University of Bengkulu. The experiment was consists of five Ageratum leaf extract concentrations as a botanical fungicide (i.e. 1%, 2%, 3%, 4%, and 5%), and synthetic fungicide namely mancozeb and metil tiofanat and control treatment (in sterile soil with no fungicide treatment). The experiment used Completely Randomized Design (CRD) with a single factor. Ageratum leaf extract was obtained through the maceration method using ethanol 96%. The application of fungicide was carried out on shallot bulbs before planting. The results showed botanical fungicides from Ageratum leaf extract were effective against twisted disease of shallots, concentration 4% of Ageratum leaf extract resulted in a longer incubation period and lower disease intensity compared to other concentrations, and the effectiveness of Ageratum leaf extract at a concentration of 4% was comparable to that of mancozeb to control twisted disease. Application of both synthetic and botanical fungicide resulted in a higher yield of shallot. Therefore, Ageratum leaf extract has potential as a substitution of synthetic fungicides to control twisted disease of shallots.
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Claims 6
Claim · model-written summary
The 4% Ageratum leaf extract lowered shallot disease intensity compared with other concentrations
- Taxon
- shallot
Allium cepa var. aggregatumt0 - Treatment
- 4% of Ageratum leaf extracte2
- Interactor
- Fusarium oxysporum f. sp. cepae
Fusarium oxysporum f. sp. cepaee1pathogen - Outcome
- disease intensitye2
- Direction
- lowere2
- Comparator
- other concentrationse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Twisted Disease of Shallot”
e1“Moler is a major disease of onion caused by Fusarium oxysporum f. sp. cepae”
e2“concentration 4% of Ageratum leaf extract resulted in a longer incubation period and lower disease intensity compared to other concentrations”
Claim · model-written summary
The 4% Ageratum leaf extract lengthened the incubation period of shallot disease compared with other concentrations
- Taxon
- shallotAllium cepa var. aggregatumt0
- Treatment
- 4% of Ageratum leaf extracte2
- Interactor
- Fusarium oxysporum f. sp. cepaeFusarium oxysporum f. sp. cepaee1pathogen
- Outcome
- incubation periode2
- Direction
- longere2
- Comparator
- other concentrationse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Twisted Disease of Shallot”
e1“Moler is a major disease of onion caused by Fusarium oxysporum f. sp. cepae”
e2“concentration 4% of Ageratum leaf extract resulted in a longer incubation period and lower disease intensity compared to other concentrations”
Claim · model-written summary
The 4% Ageratum leaf extract was comparable to mancozeb in controlling shallot twisted disease
- Taxon
- shallotAllium cepa var. aggregatumt0
- Treatment
- Ageratum leaf extract at a concentration of 4%e3
- Outcome
- effectivenesse3
- Direction
- no_changeinferrede3
- Comparator
- mancozebe3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Twisted Disease of Shallot”
e3“the effectiveness of Ageratum leaf extract at a concentration of 4% was comparable to that of mancozeb to control twisted disease”
Claim · model-written summary
Botanical fungicides from Ageratum leaf extract were effective against shallot twisted disease
- Taxon
- shallotAllium cepa var. aggregatumt0
- Treatment
- botanical fungicides from Ageratum leaf extracte4
- Outcome
- twisted diseasee4
- Direction
- effectivee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Twisted Disease of Shallot”
e4“botanical fungicides from Ageratum leaf extract were effective against twisted disease of shallots”
Claim · model-written summary
Synthetic and botanical fungicide application gave a higher shallot yield
- Taxon
- shallotAllium cepa var. aggregatumt0
- Treatment
- synthetic and botanical fungicidee5
- Outcome
- yielde5
- Direction
- highere5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Twisted Disease of Shallot”
e5“Application of both synthetic and botanical fungicide resulted in a higher yield of shallot”
Claim · model-written summary
Ageratum leaf extract is recommended as a substitute for synthetic fungicides against shallot twisted disease
- Taxon
- shallotsAllium cepa var. aggregatume6
- Treatment
- Ageratum leaf extracte6
- Outcome
- substitution of synthetic fungicidese6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Ageratum leaf extract has potential as a substitution of synthetic fungicides to control twisted disease of shallots”
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See all 38 papers →botanical · Fusarium oxysporum f. sp. cepae · 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.