Abstract
The combined application of chemical and organic fertilizers has been recognized to enhance soil fertility and foster the soil microbial ecosystem. However, the optimal ratio of chemical and organic fertilizers in oilseed rape cultivation is still uncertain, and the role of rhizosphere effect is still unclear. Thus, this study aimed to elucidate the impacts of varying ratios of chemical and organic fertilizers on the structure and potential functionalities of rhizosphere and non-rhizosphere soil microbial communities. The interplay of microbial communities with soil properties and oilseed rape root exudates was investigated in controlled pot cultivations receiving varying ratios of chemical and organic fertilizers. Results indicated clear segregation in the soil bacterial community, influenced by both fertilization treatments and rhizosphere effects. The bacterial community structure significantly correlated with nitrate nitrogen, organic acids, and dissolved organic carbon (DOC) content. Rhizosphere effects led to increased bacteria abundance, reduced diversity, and decreased network stability. Notably, F3 treatment receiving 25% chemical and 75% organic fertilizers showed a significantly higher abundance at 1.43 × 10 11 copies g −1 dry soil, accompanied by increased species and genetic diversity, and ecological network complexity. This treatment also yielded the highest aboveground biomass of oilseed rape. However, the application of organic fertilizers also increased the risk of plant pathogenicity. This study reveals the impact of fertilizers and rhizosphere effects on soil microbial community structure and function, shedding light on the establishment of more effective fertilization schemes for oilseed rape agriculture.
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Claims 9
Claim · model-written summary
Soil bacterial community showed clear segregation influenced by fertilization and rhizosphere effects in oilseed rape.
- Taxon
- oilseed rape
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napuse2 - Outcome
- segregation in the soil bacterial communitye1
- Qualifier
- influenced by both fertilization treatments and rhizosphere effectse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
e1“Results indicated clear segregation in the soil bacterial community, influenced by both fertilization treatments and rhizosphere effects”
e2“optimal ratio of chemical and organic fertilizers in oilseed rape cultivation”
Claim · model-written summary
Bacterial community structure correlated significantly with nitrate nitrogen, organic acids and dissolved organic carbon.
- Taxon
- oilseed rapeBrassica napuse2
- Compound
- nitrate nitrogen, organic acids, and dissolved organic carbon (DOC) contente3
- Outcome
- bacterial community structuree3
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“The bacterial community structure significantly correlated with nitrate nitrogen, organic acids, and dissolved organic carbon (DOC) content”
e2“optimal ratio of chemical and organic fertilizers in oilseed rape cultivation”
Claim · model-written summary
Rhizosphere effects increased bacteria abundance in oilseed rape soil.
- Taxon
- oilseed rapeBrassica napuse2
- Treatment
- Rhizosphere effectse4
- Outcome
- bacteria abundancee4
- Direction
- increasede4
- Comparator
- non-rhizosphere soile5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Rhizosphere effects led to increased bacteria abundance, reduced diversity, and decreased network stability”
e5“rhizosphere and non-rhizosphere soil microbial communities”
e2“optimal ratio of chemical and organic fertilizers in oilseed rape cultivation”
Claim · model-written summary
Rhizosphere effects reduced soil microbial diversity in oilseed rape.
- Taxon
- oilseed rapeBrassica napuse2
- Treatment
- Rhizosphere effectse4
- Outcome
- diversitye4
- Direction
- reducede4
- Comparator
- non-rhizosphere soile5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Rhizosphere effects led to increased bacteria abundance, reduced diversity, and decreased network stability”
e5“rhizosphere and non-rhizosphere soil microbial communities”
e2“optimal ratio of chemical and organic fertilizers in oilseed rape cultivation”
Claim · model-written summary
Rhizosphere effects decreased soil microbial network stability in oilseed rape.
- Taxon
- oilseed rapeBrassica napuse2
- Treatment
- Rhizosphere effectse4
- Outcome
- network stabilitye4
- Direction
- decreasede4
- Comparator
- non-rhizosphere soile5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Rhizosphere effects led to increased bacteria abundance, reduced diversity, and decreased network stability”
e5“rhizosphere and non-rhizosphere soil microbial communities”
e2“optimal ratio of chemical and organic fertilizers in oilseed rape cultivation”
Claim · model-written summary
F3 treatment with 25% chemical and 75% organic fertilizers significantly raised bacterial abundance to 1.43 × 10 11 copies g −1 dry soil.
- Taxon
- oilseed rapeBrassica napuse2
- Treatment
- F3 treatment receiving 25% chemical and 75% organic fertilizerse6
- Outcome
- abundancee6
- Direction
- highere6
- Value
- 1.43 × 10 11 copies g −1 dry soile6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“F3 treatment receiving 25% chemical and 75% organic fertilizers showed a significantly higher abundance at 1.43 × 10 11 copies g −1 dry soil”
e2“optimal ratio of chemical and organic fertilizers in oilseed rape cultivation”
Claim · model-written summary
F3 treatment increased species and genetic diversity and ecological network complexity.
- Taxon
- oilseed rapeBrassica napuse2
- Treatment
- F3 treatment receiving 25% chemical and 75% organic fertilizerse6
- Outcome
- species and genetic diversity, and ecological network complexitye7
- Direction
- increasede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“accompanied by increased species and genetic diversity, and ecological network complexity”
e6“F3 treatment receiving 25% chemical and 75% organic fertilizers showed a significantly higher abundance at 1.43 × 10 11 copies g −1 dry soil”
e2“optimal ratio of chemical and organic fertilizers in oilseed rape cultivation”
Claim · model-written summary
F3 treatment gave the highest aboveground biomass of oilseed rape.
- Taxon
- oilseed rapeBrassica napuse0
- Treatment
- F3 treatment receiving 25% chemical and 75% organic fertilizerse6
- Outcome
- aboveground biomasse0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This treatment also yielded the highest aboveground biomass of oilseed rape”
e6“F3 treatment receiving 25% chemical and 75% organic fertilizers showed a significantly higher abundance at 1.43 × 10 11 copies g −1 dry soil”
Claim · model-written summary
Application of organic fertilizers increased the risk of plant pathogenicity in oilseed rape.
- Taxon
- oilseed rapeBrassica napuse2
- Treatment
- application of organic fertilizerse0
- Outcome
- risk of plant pathogenicitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of organic fertilizers also increased the risk of plant pathogenicity”
e2“optimal ratio of chemical and organic fertilizers in oilseed rape cultivation”
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