干旱区生态环境知识资源中心(Arid): Kaolinite neoformation from palygorskite in the rhizosphere of citrus trees in semi-arid regions

Arid

DOI	10.1016/j.catena.2019.104292
	Kaolinite neoformation from palygorskite in the rhizosphere of citrus trees in semi-arid regions
	Shahrokh, Vajihe 1; Khademi, Hossein 1; Faz Cano, Angel 2; Acosta, Jose A.2; Zornoza, Raul 2
通讯作者	Shahrokh, Vajihe
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2020
卷号	185
英文摘要	Very limited information is available on fibrous clay minerals transformation in the rhizosphere of agricultural crops; especially that of citrus trees (orange, Citrus sinensis and lemon, Citrus limon) extensively cultivated worldwide, despite a large number of investigations evaluated the environmental conditions for the formation and stability of these minerals. In this study, palygorskite changes within the rhizosphere and bulk soil of selected citrus species of different ages and the ability of these plants to extract Mg from palygorskite were investigated. Orange orchards aged 5, 10 and 20 years and lemon orchards aged 5, 20 and 50 years were selected in Fars Province, Iran. The ratio of 0.71 to 0.64 nm XRD peak area (indicator of the relative quantities of neoformed kaolinite) and different forms of soil Mg were determined. The 0.71/0.64 ratio showed the highest relative quantity of neoformed kaolinite in the rhizosphere of orange trees as compared to the bulk soil, which was consistent with available Mg. Such variation trend of these soil parameters was slightly different in lemon orchards. A significant change in available Mg and kaolinite neoformation rate in older age groups of orange trees were observed because of continuous cultivation, higher Mg demand and root uptake. Furthermore, hexagonal particles of neoformed kaolinite were observed in the rhizosphere of orange trees using TEM. Nonexchangeable Mg was higher in the rhizosphere of 50-year-old lemon orchard compared to the bulk soil, which was consistent with the relative quantity of neoformed kaolinite. In addition, the trend of nonexchangeable Mg variation was in line with that of kaolinite neoformation rate in the rhizosphere and bulk soils of lemon orchards. Leaf analysis showed that palygorskite weathering could meet orchards' physiological Mg demand and palygorskite kaolinitization might play a role in agricultural soils of arid to semi-arid regions with no dolomitic sources of Mg.
英文关键词	Citrus Rhizosphere Palygorskite Kaolinite neoformation Magnesium
类型	Article
语种	英语
国家	Iran ; Spain
收录类别	SCI-E
WOS记录号	WOS:000504504500019
WOS关键词	NORWAY-SPRUCE ; SOIL SOLUTION ; CALCAREOUS SOILS ; PINUS-SYLVESTRIS ; CLAY MINERALOGY ; ROCK TYPE ; POTASSIUM ; PLANTS ; ECTOMYCORRHIZAL ; ROOTS
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
EI主题词	2020-02-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312761
作者单位	1.Isfahan Univ Technol, Dept Soil Sci, Coll Agr, Esfahan 8415683111, Iran; 2.Univ Politecn Cartagena, Sustainable Use Management & Reclamat Soil & Wate, Paseo Alfonso XIII 48, Murcia 30203, Spain
推荐引用方式 GB/T 7714	Shahrokh, Vajihe,Khademi, Hossein,Faz Cano, Angel,et al. Kaolinite neoformation from palygorskite in the rhizosphere of citrus trees in semi-arid regions[J],2020,185.
APA	Shahrokh, Vajihe,Khademi, Hossein,Faz Cano, Angel,Acosta, Jose A.,&Zornoza, Raul.(2020).Kaolinite neoformation from palygorskite in the rhizosphere of citrus trees in semi-arid regions.CATENA,185.
MLA	Shahrokh, Vajihe,et al."Kaolinite neoformation from palygorskite in the rhizosphere of citrus trees in semi-arid regions".CATENA 185(2020).