Enhanced Sweet Sorghum Growth and Soil Quality in Coastal Saline–Alkali Soils Through Organic Acid-Containing Bio-Based Materials and Microbial Synergy
Coastal mudflats are characterized by high salinity and alkalinity, along with low mineral nutrient availability, making it challenging to achieve high biomass or effective yields when directly cultivating food or fodder crops. Exogenous complex saline soil amendments can enhance forage production,...
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2024-12-01
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| author | Wei Xue Shengjie Yang Xiaoyu Liu Man Qian Huiyan Wang He Yang Xinbao Liu Yixin Shen Jianlong Li Zhengguo Sun |
| author_facet | Wei Xue Shengjie Yang Xiaoyu Liu Man Qian Huiyan Wang He Yang Xinbao Liu Yixin Shen Jianlong Li Zhengguo Sun |
| author_sort | Wei Xue |
| collection | DOAJ |
| description | Coastal mudflats are characterized by high salinity and alkalinity, along with low mineral nutrient availability, making it challenging to achieve high biomass or effective yields when directly cultivating food or fodder crops. Exogenous complex saline soil amendments can enhance forage production, but their effects on soil salinity reduction and nutrient activation remain unclear. This study used pot experiments and laboratory analyses to investigate these effects. A 0.3% saline–alkali soil was treated with a combination of organic acids (fulvic acid and citric acid), bio-based materials (cow dung and pine needles), and beneficial microbial mixtures (<i>Priestia megaterium</i> + <i>Trichoderma harzianum</i>, <i>Bacillus subtilis</i> + <i>Aspergillus niger</i>, and <i>Bacillus pumilus</i> + <i>Paecilomyces lilacinus</i>). The organic acid bio-modifier significantly alleviated salinity stress in sweet sorghum, reducing soil salinity, increasing soil nutrient levels, enhancing root vigor and photosynthesis, and improving plant morphology, resulting in higher biomass yields. Among the factors tested, bio-based materials had the most pronounced effect. Citric acid, pine needles, <i>Priestia megaterium</i>, and <i>Trichoderma harzianum</i> enhanced sweet sorghum growth during the seedling stage, whereas fulvic acid, pine needles, <i>Bacillus pumilus</i>, and <i>Paecilomyces lilacinus</i> were more beneficial during the elongation stage. |
| format | Article |
| id | doaj-art-79ffcb90a9c445bead16cb9dbfdb0ca3 |
| institution | Kabale University |
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| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
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| series | Agronomy |
| spelling | doaj-art-79ffcb90a9c445bead16cb9dbfdb0ca32025-01-24T13:16:31ZengMDPI AGAgronomy2073-43952024-12-011515610.3390/agronomy15010056Enhanced Sweet Sorghum Growth and Soil Quality in Coastal Saline–Alkali Soils Through Organic Acid-Containing Bio-Based Materials and Microbial SynergyWei Xue0Shengjie Yang1Xiaoyu Liu2Man Qian3Huiyan Wang4He Yang5Xinbao Liu6Yixin Shen7Jianlong Li8Zhengguo Sun9College of Agro-Grassland Science, Nanjing Agricultural University, Nanjing 210095, ChinaSchool of Life Sciences, Nanjing University, Nanjing 210023, ChinaCollege of Agro-Grassland Science, Nanjing Agricultural University, Nanjing 210095, ChinaCollege of Agro-Grassland Science, Nanjing Agricultural University, Nanjing 210095, ChinaCollege of Agro-Grassland Science, Nanjing Agricultural University, Nanjing 210095, ChinaCollege of Agro-Grassland Science, Nanjing Agricultural University, Nanjing 210095, ChinaCollege of Agro-Grassland Science, Nanjing Agricultural University, Nanjing 210095, ChinaCollege of Agro-Grassland Science, Nanjing Agricultural University, Nanjing 210095, ChinaCollege of Agro-Grassland Science, Nanjing Agricultural University, Nanjing 210095, ChinaCollege of Agro-Grassland Science, Nanjing Agricultural University, Nanjing 210095, ChinaCoastal mudflats are characterized by high salinity and alkalinity, along with low mineral nutrient availability, making it challenging to achieve high biomass or effective yields when directly cultivating food or fodder crops. Exogenous complex saline soil amendments can enhance forage production, but their effects on soil salinity reduction and nutrient activation remain unclear. This study used pot experiments and laboratory analyses to investigate these effects. A 0.3% saline–alkali soil was treated with a combination of organic acids (fulvic acid and citric acid), bio-based materials (cow dung and pine needles), and beneficial microbial mixtures (<i>Priestia megaterium</i> + <i>Trichoderma harzianum</i>, <i>Bacillus subtilis</i> + <i>Aspergillus niger</i>, and <i>Bacillus pumilus</i> + <i>Paecilomyces lilacinus</i>). The organic acid bio-modifier significantly alleviated salinity stress in sweet sorghum, reducing soil salinity, increasing soil nutrient levels, enhancing root vigor and photosynthesis, and improving plant morphology, resulting in higher biomass yields. Among the factors tested, bio-based materials had the most pronounced effect. Citric acid, pine needles, <i>Priestia megaterium</i>, and <i>Trichoderma harzianum</i> enhanced sweet sorghum growth during the seedling stage, whereas fulvic acid, pine needles, <i>Bacillus pumilus</i>, and <i>Paecilomyces lilacinus</i> were more beneficial during the elongation stage.https://www.mdpi.com/2073-4395/15/1/56mudflat soilorganic acidbio-based materialsweet sorghumsoil microbial enhancement |
| spellingShingle | Wei Xue Shengjie Yang Xiaoyu Liu Man Qian Huiyan Wang He Yang Xinbao Liu Yixin Shen Jianlong Li Zhengguo Sun Enhanced Sweet Sorghum Growth and Soil Quality in Coastal Saline–Alkali Soils Through Organic Acid-Containing Bio-Based Materials and Microbial Synergy Agronomy mudflat soil organic acid bio-based material sweet sorghum soil microbial enhancement |
| title | Enhanced Sweet Sorghum Growth and Soil Quality in Coastal Saline–Alkali Soils Through Organic Acid-Containing Bio-Based Materials and Microbial Synergy |
| title_full | Enhanced Sweet Sorghum Growth and Soil Quality in Coastal Saline–Alkali Soils Through Organic Acid-Containing Bio-Based Materials and Microbial Synergy |
| title_fullStr | Enhanced Sweet Sorghum Growth and Soil Quality in Coastal Saline–Alkali Soils Through Organic Acid-Containing Bio-Based Materials and Microbial Synergy |
| title_full_unstemmed | Enhanced Sweet Sorghum Growth and Soil Quality in Coastal Saline–Alkali Soils Through Organic Acid-Containing Bio-Based Materials and Microbial Synergy |
| title_short | Enhanced Sweet Sorghum Growth and Soil Quality in Coastal Saline–Alkali Soils Through Organic Acid-Containing Bio-Based Materials and Microbial Synergy |
| title_sort | enhanced sweet sorghum growth and soil quality in coastal saline alkali soils through organic acid containing bio based materials and microbial synergy |
| topic | mudflat soil organic acid bio-based material sweet sorghum soil microbial enhancement |
| url | https://www.mdpi.com/2073-4395/15/1/56 |
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