Effects of Intercropping and Nitrogen Application on Soil Fertility and Microbial Communities in Peanut Rhizosphere Soil
The intercropping of peanuts and sugarcane is a sustainable planting model that deserves in-depth research. For this study, two variables, i.e., intercropping status (peanut monocropping or sugarcane/peanut intercropping) and the level of nitrogen fertilization (low, medium, or high), were evaluated...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-03-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/14/3/635 |
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| author | Haining Wu Shufang Chen Zhipeng Huang Tangwei Huang Xiumei Tang Liangqiong He Zhong Li Jun Xiong Ruichun Zhong Jing Jiang Zhuqiang Han Ronghua Tang |
| author_facet | Haining Wu Shufang Chen Zhipeng Huang Tangwei Huang Xiumei Tang Liangqiong He Zhong Li Jun Xiong Ruichun Zhong Jing Jiang Zhuqiang Han Ronghua Tang |
| author_sort | Haining Wu |
| collection | DOAJ |
| description | The intercropping of peanuts and sugarcane is a sustainable planting model that deserves in-depth research. For this study, two variables, i.e., intercropping status (peanut monocropping or sugarcane/peanut intercropping) and the level of nitrogen fertilization (low, medium, or high), were evaluated to analyze the effects of intercropping and nitrogen application on soil fertility and microbial communities in peanut rhizosphere soil. These analyses revealed that higher nitrogen application led to increased total nitrogen (TN), available nitrogen (AN), and soil organic matter (OM) levels in rhizosphere soil for both monocropped and intercropped peanuts, with a decrease in pH. Monocropped peanuts had higher TN, total phosphorus (TP), and total potassium (TK) levels compared to intercropped peanuts at the same nitrogen level but lower AN content and pH levels. The diversity of microbial communities in the rhizosphere soil of intercropped peanuts was significantly higher than that of monocropped peanuts under high levels of nitrogen fertilizer application. Higher levels of <i>Gemmatimonadetes</i> abundance were observed in intercropping rhizosphere soil, compared to that associated with peanut monocropping under low, middle, and high levels of nitrogen fertilizer application, whereas the opposite trend was observed for <i>Chloroflexi</i> abundance. <i>Nitrospira</i> abundance levels rose gradually in the monocropping treatment group, whereas the opposite trend was evident under intercropping conditions. Further analyses of nitrogen cycle-related genes demonstrated higher levels of nitrogen conversion cycle activity in intercropping peanut rhizosphere soil under low nitrogen levels, whereas nitrogen transformation cycle activity levels were higher in monocropping peanut rhizosphere soil under high levels of nitrogen amendment. It can be concluded that intercropping and nitrogen fertilizer application change the physical and chemical properties of soil, thus affecting the diversity and function of soil microbial communities in the peanut rhizosphere. These results offer a theoretical foundation for more efficient sugarcane/peanut intercropping systems. |
| first_indexed | 2024-04-24T18:38:09Z |
| format | Article |
| id | doaj.art-ce1ab3c6289b469297848f4c941c8037 |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-04-24T18:38:09Z |
| publishDate | 2024-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-ce1ab3c6289b469297848f4c941c80372024-03-27T13:17:07ZengMDPI AGAgronomy2073-43952024-03-0114363510.3390/agronomy14030635Effects of Intercropping and Nitrogen Application on Soil Fertility and Microbial Communities in Peanut Rhizosphere SoilHaining Wu0Shufang Chen1Zhipeng Huang2Tangwei Huang3Xiumei Tang4Liangqiong He5Zhong Li6Jun Xiong7Ruichun Zhong8Jing Jiang9Zhuqiang Han10Ronghua Tang11Cash Crops Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530004, ChinaCash Crops Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530004, ChinaCash Crops Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530004, ChinaCollege of Agricultural Engineering, Guangxi Vocational University of Agriculture, Nanning 530004, ChinaCash Crops Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530004, ChinaCash Crops Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530004, ChinaGuangxi Crop Genetic Improvement and Biotechnology Laboratory, Guangxi Academy of Agricultural Sciences, Nanning 530004, ChinaCash Crops Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530004, ChinaCash Crops Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530004, ChinaCash Crops Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530004, ChinaCash Crops Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530004, ChinaCash Crops Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530004, ChinaThe intercropping of peanuts and sugarcane is a sustainable planting model that deserves in-depth research. For this study, two variables, i.e., intercropping status (peanut monocropping or sugarcane/peanut intercropping) and the level of nitrogen fertilization (low, medium, or high), were evaluated to analyze the effects of intercropping and nitrogen application on soil fertility and microbial communities in peanut rhizosphere soil. These analyses revealed that higher nitrogen application led to increased total nitrogen (TN), available nitrogen (AN), and soil organic matter (OM) levels in rhizosphere soil for both monocropped and intercropped peanuts, with a decrease in pH. Monocropped peanuts had higher TN, total phosphorus (TP), and total potassium (TK) levels compared to intercropped peanuts at the same nitrogen level but lower AN content and pH levels. The diversity of microbial communities in the rhizosphere soil of intercropped peanuts was significantly higher than that of monocropped peanuts under high levels of nitrogen fertilizer application. Higher levels of <i>Gemmatimonadetes</i> abundance were observed in intercropping rhizosphere soil, compared to that associated with peanut monocropping under low, middle, and high levels of nitrogen fertilizer application, whereas the opposite trend was observed for <i>Chloroflexi</i> abundance. <i>Nitrospira</i> abundance levels rose gradually in the monocropping treatment group, whereas the opposite trend was evident under intercropping conditions. Further analyses of nitrogen cycle-related genes demonstrated higher levels of nitrogen conversion cycle activity in intercropping peanut rhizosphere soil under low nitrogen levels, whereas nitrogen transformation cycle activity levels were higher in monocropping peanut rhizosphere soil under high levels of nitrogen amendment. It can be concluded that intercropping and nitrogen fertilizer application change the physical and chemical properties of soil, thus affecting the diversity and function of soil microbial communities in the peanut rhizosphere. These results offer a theoretical foundation for more efficient sugarcane/peanut intercropping systems.https://www.mdpi.com/2073-4395/14/3/635peanutintercroppingnitrogen fertilizersoil fertilitysoil microorganisms |
| spellingShingle | Haining Wu Shufang Chen Zhipeng Huang Tangwei Huang Xiumei Tang Liangqiong He Zhong Li Jun Xiong Ruichun Zhong Jing Jiang Zhuqiang Han Ronghua Tang Effects of Intercropping and Nitrogen Application on Soil Fertility and Microbial Communities in Peanut Rhizosphere Soil Agronomy peanut intercropping nitrogen fertilizer soil fertility soil microorganisms |
| title | Effects of Intercropping and Nitrogen Application on Soil Fertility and Microbial Communities in Peanut Rhizosphere Soil |
| title_full | Effects of Intercropping and Nitrogen Application on Soil Fertility and Microbial Communities in Peanut Rhizosphere Soil |
| title_fullStr | Effects of Intercropping and Nitrogen Application on Soil Fertility and Microbial Communities in Peanut Rhizosphere Soil |
| title_full_unstemmed | Effects of Intercropping and Nitrogen Application on Soil Fertility and Microbial Communities in Peanut Rhizosphere Soil |
| title_short | Effects of Intercropping and Nitrogen Application on Soil Fertility and Microbial Communities in Peanut Rhizosphere Soil |
| title_sort | effects of intercropping and nitrogen application on soil fertility and microbial communities in peanut rhizosphere soil |
| topic | peanut intercropping nitrogen fertilizer soil fertility soil microorganisms |
| url | https://www.mdpi.com/2073-4395/14/3/635 |
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