Abstract
The search for ecofriendly products to reduce crop dependence on synthetic chemical fertilizers presents a new challenge. The present study aims to isolate and select efficient native PGPB that can reduce reliance on synthetic NPK fertilizers. A total of 41 bacteria were isolated from the sediment and roots of mangrove trees ( Avicennia marina ) and assessed for their PGP traits under in vitro conditions. Of them, only two compatible strains of Bacillus sp ecies were selected to be used individually and in a mix to promote tomato seedling growth. The efficiency of three inoculants applied to the soil was assessed in a pot experiment at varying rates of synthetic NPK fertilization (0, 50, and 100% NPK). The experiment was set up in a completely randomized design with three replications. Results showed that the different inoculants significantly increased almost all the studied parameters. However, their effectiveness is strongly linked to the applied rate of synthetic fertilization. Applying bacterial inoculant with only 50% NPK significantly increased the plant height (44-51%), digital biomass (60-86%), leaf area (77-87%), greenness average (29-36%), normalized difference vegetation index (29%), shoot dry weight (82-92%) and root dry weight (160-205%) compared to control plants. Concerning the photosynthetic activity, this treatment showed a positive impact on the concentrations of chlorophyll a (25-31%), chlorophyll b (34-39%), and carotenoid (45-49%). Interestingly, these increases ensured the highest values significantly similar to or higher than those of control plants given 100% NPK. Furthermore, the highest accumulation of N, P, K, Cu, Fe, Zn, and Ca in tomato shoots was recorded in plants inoculated with the bacterial mix at 50% NPK. It was proven for the first time that the native PGP bacteria derived from mangrove plant species A. marina positively affects the quality of tomato seedlings while reducing 50% NPK.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 11
Claim · model-written summary
Inoculant with 50% NPK raised tomato plant height 44-51% against controls.
- Treatment
- bacterial inoculant with only 50% NPKe0
- Outcome
- plant heighte0
- Direction
- increasede0
- Value
- 44-51%e0
Not reportedTaxonComparator
Verbatim
e0“Applying bacterial inoculant with only 50% NPK significantly increased the plant height (44-51%)”
Claim · model-written summary
Inoculant with 50% NPK raised tomato digital biomass 60-86%.
- Treatment
- bacterial inoculant with only 50% NPKe0
- Outcome
- digital biomasse0
- Direction
- increasede0
- Value
- 60-86%e0
Not reportedTaxonComparator
Verbatim
e0“Applying bacterial inoculant with only 50% NPK significantly increased the plant height (44-51%), digital biomass (60-86%)”
Claim · model-written summary
Inoculant with 50% NPK raised tomato leaf area 77-87%.
Not reportedTaxonComparator
Verbatim
e0“Applying bacterial inoculant with only 50% NPK significantly increased the plant height (44-51%), digital biomass (60-86%), leaf area (77-87%)”
Claim · model-written summary
Inoculant with 50% NPK raised tomato greenness average 29-36%.
- Treatment
- bacterial inoculant with only 50% NPKe0
- Outcome
- greenness averagee0
- Direction
- increasede0
- Value
- 29-36%e0
Not reportedTaxonComparator
Verbatim
e0“Applying bacterial inoculant with only 50% NPK significantly increased the plant height (44-51%), digital biomass (60-86%), leaf area (77-87%), greenness average (29-36%)”
Claim · model-written summary
Inoculant with 50% NPK raised tomato normalized difference vegetation index 29%.
- Treatment
- bacterial inoculant with only 50% NPKe0
- Outcome
- normalized difference vegetation indexe0
- Direction
- increasede0
- Value
- 29%e0
Not reportedTaxonComparator
Verbatim
e0“Applying bacterial inoculant with only 50% NPK significantly increased the plant height (44-51%), digital biomass (60-86%), leaf area (77-87%), greenness average (29-36%), normalized difference vegetation index (29%)”
Claim · model-written summary
Inoculant with 50% NPK raised tomato shoot dry weight 82-92%.
- Treatment
- bacterial inoculant with only 50% NPKe0
- Outcome
- shoot dry weighte0
- Direction
- increasede0
- Value
- 82-92%e0
Not reportedTaxonComparator
Verbatim
e0“Applying bacterial inoculant with only 50% NPK significantly increased the plant height (44-51%), digital biomass (60-86%), leaf area (77-87%), greenness average (29-36%), normalized difference vegetation index (29%), shoot dry weight (82-92%)”
Claim · model-written summary
Inoculant with 50% NPK raised tomato root dry weight 160-205%.
- Treatment
- bacterial inoculant with only 50% NPKe0
- Outcome
- root dry weighte0
- Direction
- increasede0
- Value
- 160-205%e0
- Comparator
- control plantse0
Not reportedTaxon
Verbatim
e0“Applying bacterial inoculant with only 50% NPK significantly increased the plant height (44-51%), digital biomass (60-86%), leaf area (77-87%), greenness average (29-36%), normalized difference vegetation index (29%), shoot dry weight (82-92%) and root dry weight (160-205%) compared to control plants”
Claim · model-written summary
The treatment increased chlorophyll a concentration 25-31%.
- Treatment
- this treatmente0
- Outcome
- concentrations of chlorophyll ae0
- Direction
- positive impacte0
- Value
- 25-31%e0
Not reportedTaxonComparator
Verbatim
e0“this treatment showed a positive impact on the concentrations of chlorophyll a (25-31%)”
Claim · model-written summary
The treatment increased chlorophyll b concentration 34-39%.
Not reportedTaxonComparator
Verbatim
e0“this treatment showed a positive impact on the concentrations of chlorophyll a (25-31%), chlorophyll b (34-39%)”
Claim · model-written summary
The treatment increased carotenoid concentration 45-49%.
Not reportedTaxonComparator
Verbatim
e0“this treatment showed a positive impact on the concentrations of chlorophyll a (25-31%), chlorophyll b (34-39%), and carotenoid (45-49%)”
Claim · model-written summary
The bacterial mix at 50% NPK gave the highest N, P, K, Cu, Fe, Zn and Ca accumulation in tomato shoots.
- Taxon
- tomato
Solanum lycopersicume0 - Organ / stage
- shootse0
- Treatment
- inoculated with the bacterial mix at 50% NPKe0
- Outcome
- accumulation of N, P, K, Cu, Fe, Zn, and Cae0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest accumulation of N, P, K, Cu, Fe, Zn, and Ca in tomato shoots was recorded in plants inoculated with the bacterial mix at 50% NPK”
The same questions in other papers
inoculation · nutrient: content · Solanum lycopersicum (tomato)Positive and negative results
84 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
83 papers more in this group
See all 87 papers →fertilization · nutrient: content · Solanum lycopersicum (tomato)Positive and negative results
225 papers in the same direction as this paper · 38 in the opposite direction · 7 reporting no difference from an alternative
- positive
- no effect
- negative
267 papers more in this group
See all 271 papers →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.