Abstract
The excessive build-up of soil nematodes and uncontrolled spread of fungal diseases contribute to low yields in tomato (Solanum lycopersicum L.) production. The objective of this study was to investigate the pathogenicity of Fusarium oxysporum f.sp. lycopersici and Meloidogyne incognita on growth, yield and wilt severity in tomato varieties. A factorial experiment was laid out in a randomised complete block design (RCBD), with three replications, on two fields, namely University of Ghana, Legon farm and at the National Service Demonstration Farm at Papao both in Ghana, from July 2018 to June 2019. Two tomato varieties, namely Mongal F1 and Petomech were used for evaluation. Fusarium inoculum of 1.3×106 cells per 5 mL suspension was inoculated in the experimental plots naturally infested with Meloidogyne incognita, at 7, 14, and 21 days (NF7, NF14, NF21), after transplanting tomato seedlings into the fields. Wilt severity was higher in the Petomech plants compared to Mongal plants, for all treatments. Wilt incidence was greater than 70% in the Petomech plants that received the treatments NF7, NF14, and NF21 in both experimental sites, respectively. Plants in the control plots had the least wilt incidence and severity among the two varieties in both sites. Mongal and Petomech plants without Fusarium inoculation had lower wilt incidence and severity compared to those that received only Fusarium inoculation. Yield was higher in the Mongal plants than in the Petomech plants. Galls scores were zero in the Mongal F1 plants for all treatments applied, in both experimental sites. Fusarium oxysporum f. sp. lycopersici and Meloidogyne incognita increase wilt severity in tomato plants when both pathogens coexist in the soil.
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Claims 7
Claim · model-written summary
Petomech had higher wilt severity than Mongal under all treatments.
Not reportedTaxon
Verbatim
e0“Wilt severity was higher in the Petomech plants compared to Mongal plants, for all treatments.”
Claim · model-written summary
Wilt incidence exceeded 70% in treated Petomech at both sites.
- Taxon
- tomato
Solanum lycopersicumt0 - Material
- Petomeche0
- Outcome
- Wilt incidencee0
- Direction
- greater thane0
- Value
- 70%e0
- Qualifier
- NF7, NF14, and NF21e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato”
e0“Wilt incidence was greater than 70% in the Petomech plants that received the treatments NF7, NF14, and NF21 in both experimental sites”
Claim · model-written summary
Control plots had the least wilt incidence and severity.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- control plotse0
- Outcome
- wilt incidence and severitye0
- Direction
- leaste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato”
e0“Plants in the control plots had the least wilt incidence and severity among the two varieties in both sites.”
Claim · model-written summary
Plants without Fusarium inoculation had lower wilt incidence and severity than plants receiving Fusarium alone.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- without Fusarium inoculatione0
- Outcome
- wilt incidence and severitye0
- Direction
- lowere0
- Comparator
- only Fusarium inoculatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato”
e0“Mongal and Petomech plants without Fusarium inoculation had lower wilt incidence and severity compared to those that received only Fusarium inoculation.”
Claim · model-written summary
Mongal yielded more than Petomech.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- Mongale0
- Outcome
- Yielde0
- Direction
- highere0
- Comparator
- Petomeche0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato”
e0“Yield was higher in the Mongal plants than in the Petomech plants.”
Claim · model-written summary
Mongal F1 had zero gall scores under every treatment at both sites.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“tomato”
e0“Galls scores were zero in the Mongal F1 plants for all treatments applied, in both experimental sites.”
Claim · model-written summary
Coexisting Fusarium and Meloidogyne increased tomato wilt severity.
- Taxon
- tomatoSolanum lycopersicume0
- Interactor
- Fusarium oxysporum f. sp. lycopersici
Fusarium oxysporum f. sp. lycopersicie0pathogen - Second interactor
- Meloidogyne incognita
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=60)
Meloidogyne incognitae0pathogen - Outcome
- wilt severitye0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_penetrates_a_tomato_root_-_USDA-ARS.jpg?width=500)
Verbatim
e0“Fusarium oxysporum f. sp. lycopersici and Meloidogyne incognita increase wilt severity in tomato plants when both pathogens coexist in the soil.”
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