干旱区生态环境知识资源中心(Arid): Comparison of methods for extracting available phosphorus from soils of the semi-arid

Arid

DOI	10.5935/1806-6690.20210062
	Comparison of methods for extracting available phosphorus from soils of the semi-arid
	Oliveira do Nascimento Medeiros, Maria Deuzilene; Tavares de Oliveira, Fabio Henrique; Preston, Welka; de Freitas Costa Paiva, Maria Regilene; de Morais Neta Gois, Helena Maria
通讯作者	Medeiros, MDOD (corresponding author), Univ Fed Rural Semiarido UFERSA, Ctr Engn CE, Campus Cent, Mossoro, RN, Brazil.
来源期刊	REVISTA CIENCIA AGRONOMICA
ISSN	0045-6888
EISSN	1806-6690
出版年	2021
卷号	52 期号:4
英文摘要	Mehlich-1 is the most used method in Brazil for extracting available phosphorus (P) from the soil. Given the heterogeneity of soils in the semi-arid region of the Northeast, and the need for an analytical protocol for P extraction, the Mehlich-1, Olsen and ion-exchange resin methods were compared in samples of ten representative soils taken from the semi-arid region between the valley of the River Piranhas-Acu (Rio Grande do Norte) and the valley of the River Jaguaribe (Ceara), where the soil pH ranges from 4.1 to 8.0. The soil samples received four doses of P based on the phosphate buffering capacity (PBC) of the soils, and were incubated for 30 days. The treatments were divided into randomised blocks, in a 10 X 4 factorial arrangement, represented by ten soils and four doses of phosphorus, each with three replications. Each experimental unit comprised one plastic pot containing 3.0 dm(3) of soil, where two maize plants were grown for 31 days in a greenhouse. The P extracted by each method was correlated with the P accumulated in the aerial part of the plants. The mixed-resin and Olsen methods showed the best correlation with the P accumulated in the plants, irrespective of the pH or PBC of the soil. Neutralisation of the acidity of Mehlich-1 was significant in alkaline soils with high levels of CaCO3 equivalent. Mehlich-1 was suitable for strongly acidic soils with a low PBC, however, the use of this extractor in pH neutral to alkaline soils with a high Ca2+ content can overestimate P availability when the soils are rich in P-Ca, or underestimate the availability in soils rich in CaCO3.
英文关键词	Alkaline soils Mehlich-1 Olsen Ion-exchange resin
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000710680700001
WOS关键词	MEHLICH-1 ; CONTACT ; TESTS ; TIME
WOS类目	Agriculture, Multidisciplinary
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369061
作者单位	[Oliveira do Nascimento Medeiros, Maria Deuzilene] Univ Fed Rural Semiarido UFERSA, Ctr Engn CE, Campus Cent, Mossoro, RN, Brazil; [Tavares de Oliveira, Fabio Henrique] Univ Fed Rural Semiarido UFERSA, Ctr Ciencias Agr CCA, Dept Ciencias Agron & Florestais DCAF, Campus Cent, Mossoro, RN, Brazil; [Preston, Welka] Univ Estadual Rio Grande do Norte UERN, Dept Gestao Ambiental, Campus Cent, Mossoro, RN, Brazil; [de Freitas Costa Paiva, Maria Regilene; de Morais Neta Gois, Helena Maria] Univ Fed Rural Semiarido UFERSA, Ctr Ciencias Agr CCA, Programa Posgrad Manejo Solo & Agua PPGMSA, Campus Cent, Mossoro, RN, Brazil
推荐引用方式 GB/T 7714	Oliveira do Nascimento Medeiros, Maria Deuzilene,Tavares de Oliveira, Fabio Henrique,Preston, Welka,et al. Comparison of methods for extracting available phosphorus from soils of the semi-arid[J],2021,52(4).
APA	Oliveira do Nascimento Medeiros, Maria Deuzilene,Tavares de Oliveira, Fabio Henrique,Preston, Welka,de Freitas Costa Paiva, Maria Regilene,&de Morais Neta Gois, Helena Maria.(2021).Comparison of methods for extracting available phosphorus from soils of the semi-arid.REVISTA CIENCIA AGRONOMICA,52(4).
MLA	Oliveira do Nascimento Medeiros, Maria Deuzilene,et al."Comparison of methods for extracting available phosphorus from soils of the semi-arid".REVISTA CIENCIA AGRONOMICA 52.4(2021).