Abstract
In Tanzania, seed infection by bacterial leaf spot (BLS) pathogens (Xanthomonads) causes yield losses up to 45% in the tomato ( Lycopersicon esculentum L.; Solanaceae family). Several studies have been conducted and wedged ecological organic agriculture (EOA) technologies (i.e., on botanicals/ biopesticides) which are significant to organic farmers in Tanzania. Nevertheless, these studies have been conducted in laboratory and screenhouse conditions, hence the technology cannot be disseminated to organic farmers for application before being validated. The current study was laid out as a 2x3 factorial experiment with five replications. Factor A was two common tomato cultivars “Rio grande” and “Malkia F1”, while factor B was seed treatment with three levels of crude plant extracts namely A. vera, C. arabica, and A. vera + C. arabica, and untreated control. Tomato seeds were soaked in the ready-made extracts for 12 hrs, then air-dried for 1 hr before sowing. The collected data were subjected to analysis of variance using Genstat 16 th edition software and means were separated using Tukey’s Honest Test at (α = 0.05). The highest efficacy against the pathogen ( Xanthomonas perforans ) causing bacterial leaf spot (BLS) was obtained from a combination of extracts from A. vera + C. arabica hence, recommended for seed treatment. Organic tomato farmers need to adopt seed treatment practices that ensure seedlings’ start-up and enhance crop growth and productivity. Although the results of validation comply with the recommendations from previous research findings, further study is needed to evaluate the effectiveness of plant extracts subject to seasonal variability among the production areas. Also, the bioactive fractions from the plant extracts and their mechanisms of action need to be evaluated comprehensively.
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Claims 4
Claim · model-written summary
The combined Aloe vera and Coffea arabica extract gave the highest efficacy against Xanthomonas perforans, the bacterial leaf spot pathogen of tomato.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- combination of extracts from A. vera + C. arabicae1
- Interactor
- Xanthomonas perforansXanthomonas perforanse1pathogen
- Outcome
- efficacy against the pathogene1
- Direction
- higheste1
- Comparator
- untreated controle2
- Setting
- Tanzaniae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In Tanzania, seed infection by bacterial leaf spot (BLS) pathogens (Xanthomonads) causes yield losses up to 45% in the tomato ( Lycopersicon esculentum L.; Solanaceae family)”
e1“The highest efficacy against the pathogen ( Xanthomonas perforans ) causing bacterial leaf spot (BLS) was obtained from a combination of extracts from A. vera + C. arabica hence, recommended for seed treatment”
e2“factor B was seed treatment with three levels of crude plant extracts namely A. vera, C. arabica, and A. vera + C. arabica, and untreated control”
Claim · model-written summary
The combined Aloe vera and Coffea arabica extract is recommended for seed treatment of tomato.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- combination of extracts from A. vera + C. arabicae1
- Outcome
- seed treatmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In Tanzania, seed infection by bacterial leaf spot (BLS) pathogens (Xanthomonads) causes yield losses up to 45% in the tomato ( Lycopersicon esculentum L.; Solanaceae family)”
e1“The highest efficacy against the pathogen ( Xanthomonas perforans ) causing bacterial leaf spot (BLS) was obtained from a combination of extracts from A. vera + C. arabica hence, recommended for seed treatment”
Claim · model-written summary
Organic tomato farmers should adopt seed treatment practices.
- Taxon
- tomatoSolanum lycopersicume0
- Outcome
- seed treatment practicese3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In Tanzania, seed infection by bacterial leaf spot (BLS) pathogens (Xanthomonads) causes yield losses up to 45% in the tomato ( Lycopersicon esculentum L.; Solanaceae family)”
e3“Organic tomato farmers need to adopt seed treatment practices”
Claim · model-written summary
The results of the on-farm validation agree with recommendations from previous research.
- Taxon
- tomatoSolanum lycopersicume0
- Outcome
- results of validatione4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In Tanzania, seed infection by bacterial leaf spot (BLS) pathogens (Xanthomonads) causes yield losses up to 45% in the tomato ( Lycopersicon esculentum L.; Solanaceae family)”
e4“the results of validation comply with the recommendations from previous research findings”
The same questions in other papers
botanical · Xanthomonas perforans · Solanum lycopersicum (tomato)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.