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Leguminous Green Manure Intercropping Promotes Soil Health in a Citrus ( Citrus reticulata ) Orchard

Author

Listed:
  • Yuxin Xie

    (State Key Laboratory of Herbage Improvement and Grassland AgroEcosystems, Lanzhou University, Lanzhou 730020, China)

  • Yulin Jing

    (Institute of Soil Fertilisation and Resource Environment, Nanchong Academy of Agricultural Sciences, Nanchong 637000, China)

  • Yajie Wang

    (State Key Laboratory of Herbage Improvement and Grassland AgroEcosystems, Lanzhou University, Lanzhou 730020, China)

  • Rongchun Zheng

    (State Key Laboratory of Herbage Improvement and Grassland AgroEcosystems, Lanzhou University, Lanzhou 730020, China)

  • Qiurui Xu

    (State Key Laboratory of Herbage Improvement and Grassland AgroEcosystems, Lanzhou University, Lanzhou 730020, China)

  • Zhenyu Sun

    (Institute of Plant Protection, Gansu Academy of Agricultural Sciences, Lanzhou 730070, China)

  • Tingyu Duan

    (State Key Laboratory of Herbage Improvement and Grassland AgroEcosystems, Lanzhou University, Lanzhou 730020, China)

Abstract

The intercropping of green manure is an important and sustainable production method in citrus orchards ( Citrus reticulata ). However, few studies focus on the impact of annual and perennial green manure on soil health, particularly soil microbiome and properties in acid soil. Our research objective was to explore the potential effects on soil health by intercropping with annual and perennial leguminous green manures in acid soil citrus orchards of southwestern China. The leguminous green manures used were alfalfa ( Medicago sativa ) and hairy vetch ( Vicia villosa ). The results showed that intercropping with green manure increased the total nitrogen, nitrate nitrogen, and available phosphorous in the soil by 48.67~74.67%, 50.00~96.67%, and 44.48~45.04%, respectively. Intercropping with alfalfa significantly increased the activity of soil sucrase 63.75%, and intercropping with hairy vetch increased the activity of β-1,4-glucosidase 44.38% in the soil compared to the monoculture treatment. Intercropping hairy vetch and alfalfa altered the diversity and composition of the soil microbial community and enriched the soil with beneficial fungi and bacteria, including Mortierella and Streptomyces . The richness increased by 58.72% and 17.90% in alfalfa intercropping treatment. In conclusion, intercropping leguminous green manure improved the nutrients and activity of the enzymes in the soil and enriched the antagonistic microbiome in the soil, promoting soil health in the citrus orchard.

Suggested Citation

  • Yuxin Xie & Yulin Jing & Yajie Wang & Rongchun Zheng & Qiurui Xu & Zhenyu Sun & Tingyu Duan, 2024. "Leguminous Green Manure Intercropping Promotes Soil Health in a Citrus ( Citrus reticulata ) Orchard," Agriculture, MDPI, vol. 14(11), pages 1-20, October.
    • Handle: RePEc:gam:jagris:v:14:y:2024:i:11:p:1897-:d:1507127
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    References listed on IDEAS

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    1. Youyong Zhu & Hairu Chen & Jinghua Fan & Yunyue Wang & Yan Li & Jianbing Chen & JinXiang Fan & Shisheng Yang & Lingping Hu & Hei Leung & Tom W. Mew & Paul S. Teng & Zonghua Wang & Christopher C. Mundt, 2000. "Genetic diversity and disease control in rice," Nature, Nature, vol. 406(6797), pages 718-722, August.
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