Abstract
Sugarcane–legume intercropping systems can effectively control pests and diseases as well as improve the fertility and health of farmland soil. However, little is known about the response of bacterial abundance, diversity, and community composition in the rhizosphere and non-rhizosphere soils under the sugarcane–peanut farming system. A field experiment was conducted with two treatments: sugarcane monoculture and sugarcane–peanut intercropping to examine the response of sugarcane parameters and edaphic factors. We also deciphered bacterial abundance, diversity, and community composition in the root endosphere, rhizosphere, and bulk soil by leveraging Illumina sequencing to conduct the molecular characterization of the 16S rRNA gene and nitrogenase ( nifH ) gene. We observed that sugarcane–peanut intercropping exhibited the advantages of tremendously increasing cane stalk height, stalk weight, and millable stalk number/20 m, and edaphic factors, namely, pH (1.13 and 1.93), and available phosphorus exhibited a fourfold and sixfold increase (4.66 and 6.56), particularly in the rhizosphere and bulk soils, respectively. Our result also showed that the sugarcane–peanut intercropping system significantly increased the bacterial richness of the 16S rRNA gene sequencing data by 13.80 and 9.28% in the bulk soil and rhizosphere soil relative to those in the monocropping sugarcane system, respectively. At the same time, sugarcane intercropping with peanuts significantly increased the Shannon diversity of nitrogen-fixing bacteria in the sugarcane rhizosphere soil. Moreover, most edaphic factors exhibited a positive regularity effect on bacterial community composition under the intercropping system. A linear discriminant analysis with effect size analysis of the 16S rRNA sequencing data revealed that bacteria in the root endosphere of the intercropped cane proliferated profoundly, primarily occupied by Devosia , Rhizobiales , Myxococcales , Allorhizobium-Neorhizobium-Pararhizobium-Rhizobium , Bradyrhizobium , and Sphingomonas . In conclusion, our findings demonstrated that sugarcane–peanut intercropping can enhance edaphic factors, sugarcane parameters, and bacterial abundance and diversity without causing adverse impacts on crop production and soil.
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Claims 9
Claim · model-written summary
Intercropping increased cane stalk height, stalk weight and millable stalk number.
- Taxon
- sugarcanee0
- Treatment
- sugarcane–peanut intercroppinge0
- Outcome
- cane stalk height, stalk weight, and millable stalk number/20 me0
- Direction
- increasinge0
Not reportedComparator
Verbatim
e0“sugarcane–peanut intercropping exhibited the advantages of tremendously increasing cane stalk height, stalk weight, and millable stalk number/20 m”
Claim · model-written summary
Intercropping increased soil pH in rhizosphere and bulk soils.
- Taxon
- Sugarcanet0
- Outcome
- pHe0
- Direction
- increasee0
- Value
- 1.13 and 1.93e0
- Setting
- rhizosphere and bulk soilse0
Not reportedTreatmentComparator
Verbatim
e0“pH (1.13 and 1.93), and available phosphorus exhibited a fourfold and sixfold increase (4.66 and 6.56), particularly in the rhizosphere and bulk soils, respectively.”
t0“Sugarcane–Peanut Intercropping System”
Claim · model-written summary
Intercropping increased available phosphorus in rhizosphere soil.
Not reportedTreatmentComparator
Verbatim
e0“pH (1.13 and 1.93), and available phosphorus exhibited a fourfold and sixfold increase (4.66 and 6.56), particularly in the rhizosphere and bulk soils, respectively.”
t0“Sugarcane–Peanut Intercropping System”
Claim · model-written summary
Intercropping increased available phosphorus in bulk soil.
Not reportedTreatmentComparator
Verbatim
e0“pH (1.13 and 1.93), and available phosphorus exhibited a fourfold and sixfold increase (4.66 and 6.56), particularly in the rhizosphere and bulk soils, respectively.”
t0“Sugarcane–Peanut Intercropping System”
Claim · model-written summary
Intercropping significantly increased bacterial richness by 13.80% in bulk soil.
Verbatim
e0“sugarcane–peanut intercropping system significantly increased the bacterial richness of the 16S rRNA gene sequencing data by 13.80 and 9.28% in the bulk soil and rhizosphere soil relative to those in the monocropping sugarcane system, respectively.”
Claim · model-written summary
Intercropping significantly increased bacterial richness by 9.28% in rhizosphere soil.
Verbatim
e0“sugarcane–peanut intercropping system significantly increased the bacterial richness of the 16S rRNA gene sequencing data by 13.80 and 9.28% in the bulk soil and rhizosphere soil relative to those in the monocropping sugarcane system, respectively.”
Claim · model-written summary
Intercropping significantly increased Shannon diversity of nitrogen-fixing bacteria in sugarcane rhizosphere soil.
- Taxon
- sugarcanee0
- Treatment
- sugarcane intercropping with peanutse0
- Outcome
- Shannon diversity of nitrogen-fixing bacteriae0
- Direction
- increasede0
- Setting
- sugarcane rhizosphere soile0
Not reportedComparator
Verbatim
e0“sugarcane intercropping with peanuts significantly increased the Shannon diversity of nitrogen-fixing bacteria in the sugarcane rhizosphere soil.”
Claim · model-written summary
Most edaphic factors positively related to bacterial community composition under intercropping.
Verbatim
e0“most edaphic factors exhibited a positive regularity effect on bacterial community composition under the intercropping system.”
t0“Sugarcane–Peanut Intercropping System”
Claim · model-written summary
Root endosphere bacteria proliferated in intercropped cane, with several named groups predominating.
Verbatim
e0“bacteria in the root endosphere of the intercropped cane proliferated profoundly, primarily occupied by Devosia , Rhizobiales , Myxococcales , Allorhizobium-Neorhizobium-Pararhizobium-Rhizobium , Bradyrhizobium , and Sphingomonas .”
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intercropping · growth · Saccharum officinarum (sugarcane)Positive and negative results
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- positive
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See all 21 papers →intercropping · ecology: diversity · Saccharum officinarum (sugarcane)Results 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.