Alleviating Soil Acidification and Increasing the Organic Carbon Pool by Long-Term Organic Fertilizer on Tobacco Planting Soil

Long term tobacco planting leads to soil acidification. A ten-year experiment with various fertilization treatments (no fertilization (CK), chemical fertilizer (CF), organic-inorganic compound fertilizer (OCF), and organic fertilizer (OF)) was carried out between 2010 and 2020 in a continuous croppi...

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Autores principales:	Peigang Dai, Ping Cong, Peng Wang, Jianxin Dong, Zhaorong Dong, Wenjing Song
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	organic fertilizer soil acidification organic carbon tobacco Agriculture S
Acceso en línea:	https://doaj.org/article/4c16b6303c524bc695d3401d20367536
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spelling	oai:doaj.org-article:4c16b6303c524bc695d3401d203675362021-11-25T16:03:49ZAlleviating Soil Acidification and Increasing the Organic Carbon Pool by Long-Term Organic Fertilizer on Tobacco Planting Soil10.3390/agronomy111121352073-4395https://doaj.org/article/4c16b6303c524bc695d3401d203675362021-10-01T00:00:00Zhttps://www.mdpi.com/2073-4395/11/11/2135https://doaj.org/toc/2073-4395Long term tobacco planting leads to soil acidification. A ten-year experiment with various fertilization treatments (no fertilization (CK), chemical fertilizer (CF), organic-inorganic compound fertilizer (OCF), and organic fertilizer (OF)) was carried out between 2010 and 2020 in a continuous cropping system of <i>Nicotiana tabacum</i> in the brown soil of eastern China, to assess the effects of organic fertilizer on the improvement of tobacco planting soil acidification. The results indicated that treatments OCF and OF reduced the soil exchangeable acid content, of which the exchangeable aluminum showed the largest reduction by 51.28% with the OF treatment. In contrast, treatment CF showed more significant increases in exchangeable aluminum (Al) and Al saturation, and also apparently increased soil NO<sub>3</sub><sup>−</sup>-N, NH<sub>4</sub><sup>+</sup>-N and nitrification potential (NP) than other treatments. Treatments of OCF and OF significantly increased the total amount of exchangeable base (EBC) by 37.19% and 42.00% compared with CF, respectively. Redundancy analysis (RDA) showed that NP, NH<sub>4</sub><sup>+</sup>-N, and NO<sub>3</sub><sup>−</sup>-N were the important factors indicating soil acidification, while EBC and exchangeable K were the significant factors restricting soil acidification. Inevitably, OCF could improve the soil organic carbon pool and labile organic carbon pool. The structural equation model (SEM) showed that OCF treatment increased the soil organic carbon pool mainly by inhibiting soil nitrification and reducing the content of exchangeable Al. In conclusion, both OF and OCF treatments were effective methods to alleviate tobacco planting soil acidification, however OCF had more advantages in improving soil organic carbon pool.Peigang DaiPing CongPeng WangJianxin DongZhaorong DongWenjing SongMDPI AGarticleorganic fertilizersoil acidificationorganic carbontobaccoAgricultureSENAgronomy, Vol 11, Iss 2135, p 2135 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	organic fertilizer soil acidification organic carbon tobacco Agriculture S
spellingShingle	organic fertilizer soil acidification organic carbon tobacco Agriculture S Peigang Dai Ping Cong Peng Wang Jianxin Dong Zhaorong Dong Wenjing Song Alleviating Soil Acidification and Increasing the Organic Carbon Pool by Long-Term Organic Fertilizer on Tobacco Planting Soil
description	Long term tobacco planting leads to soil acidification. A ten-year experiment with various fertilization treatments (no fertilization (CK), chemical fertilizer (CF), organic-inorganic compound fertilizer (OCF), and organic fertilizer (OF)) was carried out between 2010 and 2020 in a continuous cropping system of <i>Nicotiana tabacum</i> in the brown soil of eastern China, to assess the effects of organic fertilizer on the improvement of tobacco planting soil acidification. The results indicated that treatments OCF and OF reduced the soil exchangeable acid content, of which the exchangeable aluminum showed the largest reduction by 51.28% with the OF treatment. In contrast, treatment CF showed more significant increases in exchangeable aluminum (Al) and Al saturation, and also apparently increased soil NO<sub>3</sub><sup>−</sup>-N, NH<sub>4</sub><sup>+</sup>-N and nitrification potential (NP) than other treatments. Treatments of OCF and OF significantly increased the total amount of exchangeable base (EBC) by 37.19% and 42.00% compared with CF, respectively. Redundancy analysis (RDA) showed that NP, NH<sub>4</sub><sup>+</sup>-N, and NO<sub>3</sub><sup>−</sup>-N were the important factors indicating soil acidification, while EBC and exchangeable K were the significant factors restricting soil acidification. Inevitably, OCF could improve the soil organic carbon pool and labile organic carbon pool. The structural equation model (SEM) showed that OCF treatment increased the soil organic carbon pool mainly by inhibiting soil nitrification and reducing the content of exchangeable Al. In conclusion, both OF and OCF treatments were effective methods to alleviate tobacco planting soil acidification, however OCF had more advantages in improving soil organic carbon pool.
format	article
author	Peigang Dai Ping Cong Peng Wang Jianxin Dong Zhaorong Dong Wenjing Song
author_facet	Peigang Dai Ping Cong Peng Wang Jianxin Dong Zhaorong Dong Wenjing Song
author_sort	Peigang Dai
title	Alleviating Soil Acidification and Increasing the Organic Carbon Pool by Long-Term Organic Fertilizer on Tobacco Planting Soil
title_short	Alleviating Soil Acidification and Increasing the Organic Carbon Pool by Long-Term Organic Fertilizer on Tobacco Planting Soil
title_full	Alleviating Soil Acidification and Increasing the Organic Carbon Pool by Long-Term Organic Fertilizer on Tobacco Planting Soil
title_fullStr	Alleviating Soil Acidification and Increasing the Organic Carbon Pool by Long-Term Organic Fertilizer on Tobacco Planting Soil
title_full_unstemmed	Alleviating Soil Acidification and Increasing the Organic Carbon Pool by Long-Term Organic Fertilizer on Tobacco Planting Soil
title_sort	alleviating soil acidification and increasing the organic carbon pool by long-term organic fertilizer on tobacco planting soil
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/4c16b6303c524bc695d3401d20367536
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Alleviating Soil Acidification and Increasing the Organic Carbon Pool by Long-Term Organic Fertilizer on Tobacco Planting Soil

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