Abstract
Plant growth-promoting rhizobacteria (PGPR) are free-living bacteria that, as their name suggests, promote plant growth. However, they can also be of help in the biological control of plant diseases. This study reports the effects of two different commercially available strains of Bacillus amyloliquefaciens (FZB24 and FZB42) on tomato production in open and closed systems in the presence of different amounts of nutrients. Three factors were tested: (1) the type of nutrition system (open or closed), (2) the concentration of the nutrient solution (full or half strength), and (3) the PGPR applied (either B. amyloliquefaciens FZB24 or B. amyloliquefaciens FZB42, or a no-PGPR control). Perlite was used as the growth medium. Variables related to water use efficiency, yield and fruit quality were assessed. The use of half strength nutrient solution was sufficient for full growth in the open system in both spring and autumn seasons. However, the same strength nutrient solution was associated with reduced yields in the closed system during the autumn season. The application of either strain of B. amyloliquefaciens increased the yield of the tomato plants by 8-9% in the open system in the spring, whereas they had an adverse effect on yield in the closed system under half strength nutrient solution conditions during the autumn.
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Claims 5
Claim · model-written summary
Half strength nutrient solution supported full tomato growth in the open system in spring and autumn.
- Treatment
- half strength nutrient solutione0
- Outcome
- full growthe0
- Qualifier
- both spring and autumn seasonse0
- Setting
- open systeme0
Not reportedTaxonComparatorDirection
Verbatim
e0“The use of half strength nutrient solution was sufficient for full growth in the open system in both spring and autumn seasons.”
t0“tomato (Solanum lycopersicum, L.)”
Claim · model-written summary
Half strength nutrient solution reduced tomato yields in the closed system in autumn.
- Treatment
- the same strength nutrient solutione0
- Outcome
- yieldse0
- Direction
- reducede0
- Qualifier
- autumn seasone0
- Setting
- closed systeme0
Not reportedTaxonComparator
Verbatim
e0“the same strength nutrient solution was associated with reduced yields in the closed system during the autumn season”
t0“tomato (Solanum lycopersicum, L.)”
Claim · model-written summary
B. amyloliquefaciens FZB24 increased tomato yield by 8–9% in an open system in spring.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- application of either strain of B. amyloliquefaciense0
- Interactor
- B. amyloliquefaciens
.jpg?width=60)
Bacillus amyloliquefaciense0symbiont - Outcome
- yield of the tomato plantse0
- Direction
- increasede0
- Value
- 8-9%e0
- Qualifier
- springe0
- Setting
- open systeme0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The application of either strain of B. amyloliquefaciens increased the yield of the tomato plants by 8-9% in the open system in the spring”
Claim · model-written summary
B. amyloliquefaciens FZB42 increased tomato yield by 8–9% in an open system in spring.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- application of either strain of B. amyloliquefaciense0
- Interactor
- B. amyloliquefaciensBacillus amyloliquefaciense0symbiont
- Outcome
- yield of the tomato plantse0
- Direction
- increasede0
- Value
- 8-9%e0
- Qualifier
- springe0
- Setting
- open systeme0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of either strain of B. amyloliquefaciens increased the yield of the tomato plants by 8-9% in the open system in the spring”
Claim · model-written summary
The applied B. amyloliquefaciens strains adversely affected tomato yield in a closed system with half strength nutrients in autumn.
- Outcome
- yielde0
- Direction
- adversee0
- Qualifier
- half strength nutrient solution conditions during the autumne0
- Setting
- closed systeme0
Not reportedTaxonTreatmentComparator
Verbatim
e0“they had an adverse effect on yield in the closed system under half strength nutrient solution conditions during the autumn”
t0“tomato (Solanum lycopersicum, L.)”
e1“either strain of B. amyloliquefaciens”
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