Abstract
Soil salinization, an important type of soil degradation, has become a problem restricting crop production and food quality. The remediation technologies by using compost and biochar were considered sustainable and environment friendly, but the sole application of compost or biochar hardly gets the satisfactory remediation effects. Until now, information about the effects of cocomposted biochar on soils is limited, especially in the coastal soil. This study investigated the impact and potential underlying mechanism of corn straw biochar (BC), seaweed compost (SC), and cocomposted BC and SC (BCSC) on the growth and yield of sorghum ( Sorghum bicolor (L.) Moench) in the coastal soil of China in a pot experiment. BC and BCSC treatments increased the dry biomass and yield of the sorghum by 44.0–52.4% and 132.9–192.3%, respectively. Similarly, the root morphologies of sorghum, including surface area and average diameter, were also increased with BC and BCSC addition. Meanwhile, BCSC treatment showed a better performance than what the others did. The enhanced growth and yield of sorghum primarily resulted from the improvement of soil properties (WHC, SOM, and EC) and nutrient availability (Olsen-P and AK content). In addition, the increased diversity and shifted composition of soil bacteria with BC and BCSC addition might also account for the increased growth and yield of sorghum. Furthermore, the enhanced relative abundances of beneficial bacteria Vicinamibacteraceae (39.0%) and Sphingomonadaceae (41.5%) in the rhizosphere soil were positively correlated with the content of available nutrients (NH 4 + , Olsen-P, and available K) in the coastal soil, which might reveal the mechanism of enhancing growth under the established collaborative interactions of them. Our study provides the potential of using biochar-compost to ameliorate the degradation of coastal soils and improve crop yield.
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Claims 9
Claim · model-written summary
BC and BCSC treatments increased sorghum dry biomass by 44.0-52.4%.
SorghumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sorghum”
e0“BC and BCSC treatments increased the dry biomass and yield of the sorghum by 44.0–52.4% and 132.9–192.3%, respectively”
Claim · model-written summary
BC and BCSC treatments increased sorghum yield by 132.9-192.3%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sorghum”
e0“BC and BCSC treatments increased the dry biomass and yield of the sorghum by 44.0–52.4% and 132.9–192.3%, respectively”
Claim · model-written summary
Sorghum root surface area and average diameter increased with BC and BCSC addition.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the root morphologies of sorghum, including surface area and average diameter, were also increased with BC and BCSC addition”
Claim · model-written summary
The BCSC treatment performed better than the other treatments.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sorghum”
e0“BCSC treatment showed a better performance than what the others did”
Claim · model-written summary
The enhanced growth and yield of sorghum primarily resulted from improved soil properties (WHC, SOM, EC) and nutrient availability (Olsen-P and AK).
- Outcome
- enhanced growth and yielde0
- Qualifier
- improvement of soil properties (WHC, SOM, and EC) and nutrient availabilitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The enhanced growth and yield of sorghum primarily resulted from the improvement of soil properties (WHC, SOM, and EC) and nutrient availability (Olsen-P and AK content)”
Claim · model-written summary
Increased diversity and shifted composition of soil bacteria with BC and BCSC addition might account for the increased growth and yield of sorghum.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sorghum”
e0“the increased diversity and shifted composition of soil bacteria with BC and BCSC addition might also account for the increased growth and yield of sorghum”
Claim · model-written summary
The relative abundance of beneficial Vicinamibacteraceae (39.0%) in rhizosphere soil was enhanced and positively correlated with available nutrients.
- Interactor
- VicinamibacteraceaeVicinamibacteraceaee0symbiont
- Compound
- available nutrientse0
- Outcome
- relative abundancese0
- Direction
- positively correlatede0
- Value
- 39.0%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sorghum”
e0“the enhanced relative abundances of beneficial bacteria Vicinamibacteraceae (39.0%) and Sphingomonadaceae (41.5%) in the rhizosphere soil were positively correlated with the content of available nutrients (NH 4 + , Olsen-P, and available K)”
Claim · model-written summary
The relative abundance of beneficial Sphingomonadaceae (41.5%) in rhizosphere soil was enhanced and positively correlated with available nutrients.
- Interactor
- SphingomonadaceaeSphingomonadaceaee0symbiont
- Compound
- available nutrientse0
- Outcome
- relative abundancese0
- Direction
- positively correlatede0
- Value
- 41.5%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sorghum”
e0“the enhanced relative abundances of beneficial bacteria Vicinamibacteraceae (39.0%) and Sphingomonadaceae (41.5%) in the rhizosphere soil were positively correlated with the content of available nutrients (NH 4 + , Olsen-P, and available K)”
Claim · model-written summary
The authors conclude biochar-compost has potential to ameliorate degraded coastal soils and improve crop yield.
- Outcome
- improve crop yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“sorghum”
e0“Our study provides the potential of using biochar-compost to ameliorate the degradation of coastal soils and improve crop yield”
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