Abstract
A field experiment was carried out to assess the effectiveness of the immobilized microbial inoculant and the addition of organic olive residue. The microbial inoculant contained two rhizobacterial species identified as Azospirillum brasilense and Pantoea dispersa immobilized in a natural inert support. Bacterial population densities were 3.5 10 9 and 4.1 10 9 CFU g 1 of A. brasilense M3 and P. dispersa C3, respectively. The amendment used was the organic fraction extracted with KOH from composted “alperujo”. The raw material was collected from an olivemill and mixed with fresh cow bedding as bulking agent for composting. The inoculation of rhizobacteria and the addition of organic residue were employed for plant growth promotion of Cistus albidus L. and enhancement of soil physicochemical, biochemical and biological properties in a degraded semiarid Mediterranean area. One year after planting, the available phosphorus and potassium content in the amended soils was about 100 and 70% respectively higher than in the non-amended soil. Microbial inoculant and their interaction with organic residue increased the aggregate stability of the rhizosphere soil of C. albidus (by 12% with respect to control soil) while the organic residue alone not increased the aggregate stability of the rhizosphere of C. albidus. Microbial biomass C content and enzyme activities (dehydrogenase, urease, protease-BAA and alkaline phosphatase) of the rhizosphere of C. albidus were increased by microbial inoculant and organic residue interaction but not by microbial inoculation alone. The microbial inoculant and organic residue interaction were the most effective treatment for stimulating the roots dry weight of C. albidus (by 133% with respect to control plants) and microbial inoculant was the most effective treatment for increase the shoot dry weigh of plants (by 106% with respect to control plants). The combined treatment, involving microbial inoculant and addition of the organic residue directly into the soil, had additive effect on the root growth of C. albidus and chemical and biological quality of soil.
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Claims 8
Claim · model-written summary
Organic amendment increased soil available phosphorus by about 100%.
- Treatment
- amended soilse0
- Outcome
- available phosphoruse0
- Direction
- highere0
- Value
- 100e0
- Comparator
- non-amended soile0
Not reportedTaxon
Verbatim
e0“One year after planting, the available phosphorus and potassium content in the amended soils was about 100 and 70% respectively higher than in the non-amended soil.”
Claim · model-written summary
Organic amendment increased soil available potassium by about 70%.
- Treatment
- amended soilse0
- Outcome
- potassium contente0
- Direction
- highere0
- Value
- 70%e0
- Comparator
- non-amended soile0
Not reportedTaxon
Verbatim
e0“One year after planting, the available phosphorus and potassium content in the amended soils was about 100 and 70% respectively higher than in the non-amended soil.”
Claim · model-written summary
Microbial inoculant with organic residue increased rhizosphere aggregate stability by 12% relative to control.
- Taxon
- C. albidus
Cistus albiduse0 - Treatment
- Microbial inoculant and their interaction with organic residuee0
- Outcome
- aggregate stability of the rhizosphere soile0
- Direction
- increasede0
- Value
- 12%e0
- Comparator
- control soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Microbial inoculant and their interaction with organic residue increased the aggregate stability of the rhizosphere soil of C. albidus (by 12% with respect to control soil)”
Claim · model-written summary
Organic residue alone did not increase rhizosphere aggregate stability.
- Taxon
- C. albidusCistus albiduse0
- Treatment
- organic residue alonee0
- Outcome
- aggregate stability of the rhizospheree0
- Direction
- not increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the organic residue alone not increased the aggregate stability of the rhizosphere of C. albidus.”
Claim · model-written summary
Inoculant and organic residue together increased rhizosphere microbial biomass carbon and enzyme activities.
- Taxon
- C. albidusCistus albiduse0
- Treatment
- microbial inoculant and organic residue interactione0
- Outcome
- Microbial biomass C content and enzyme activitiese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Microbial biomass C content and enzyme activities (dehydrogenase, urease, protease-BAA and alkaline phosphatase) of the rhizosphere of C. albidus were increased by microbial inoculant and organic residue interaction”
Claim · model-written summary
Microbial inoculation alone did not increase rhizosphere microbial biomass carbon and enzyme activities.
- Treatment
- microbial inoculation alonee0
Not reportedTaxonComparatorOutcomeDirection
Verbatim
e0“but not by microbial inoculation alone.”
Claim · model-written summary
Combined inoculant and residue increased Cistus root dry weight by 133% relative to control plants.
- Taxon
- C. albidusCistus albiduse0
- Treatment
- microbial inoculant and organic residue interactione0
- Outcome
- roots dry weighte0
- Direction
- stimulatinge0
- Value
- 133%e0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The microbial inoculant and organic residue interaction were the most effective treatment for stimulating the roots dry weight of C. albidus (by 133% with respect to control plants)”
Claim · model-written summary
Microbial inoculant increased shoot dry weight by 106% relative to control plants.
- Treatment
- microbial inoculante0
- Outcome
- shoot dry weighe0
- Direction
- increasee0
- Value
- 106%e0
- Comparator
- control plantse0
Not reportedTaxon
Verbatim
e0“microbial inoculant was the most effective treatment for increase the shoot dry weigh of plants (by 106% with respect to control plants).”
The same questions in other papers
inoculation · growth · Cistus albidusPositive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- negative
- positive
inoculation · soil: physics · Cistus albidusResults 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.