Chemical Fractions of Mn in Acidic Soils and Selection of Suitable Soil Extractants for Assessing Mn Availability to Maize (Zea Mays L.)

被引：8
|
作者：
Joshi, Dibya [1 ]
Srivastava, Prakash C. [1 ]
Dwivedi, Rama [1 ]
Pachauri, Satya P. [1 ]
Shukla, Arvind K. [2 ]
机构：
[1] Govind Ballabh Pant Univ Agr & Technol, Dept Soil Sci, Pantnagar 263145, Uttarakhand, India
[2] Indian Inst Soil Sci, Micronutrient Unit, Bhopal, Madhya Pradesh, India
来源：
COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS | 2017年 / 48卷 / 08期
关键词：
Acidic soil; chemical fractions; maize; manganese uptake; soil extractants; MEHLICH; 3; MANGANESE; METALS; ZINC; IRON;
D O I：
10.1080/00103624.2017.1322601
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
Twenty surface (0-15cm) samples of acidic soils were analyzed for water soluble (WS), exchangeable (EX), lead displaceable (Pb-disp.), acid soluble (AS), manganese (Mn) oxide occluded (MnOX), organically bound (OB), amorphous Fe oxide occluded (AFeOX), crystalline iron (Fe) oxide occluded (CFeOX) and residual (RES) fractions of Mn, and also for extractable Mn in some common soil extractants: (diethylenetriaminepentaacetic acid (DTPA) (pH 7.3), DTPA (pH 5.3), AB-DTPA (pH 7.6), Mehlich-3 (pH 2.0), Modified Olsen, 0.005M calcium chloride (CaCl2), 1M magnesium chloride (MgCl2) and ion exchange resins. The WS-Mn fraction showed a significant and positive correlation with Mn extractable in DTPA (pH 5.3) and AB-DTPA (pH 7.6), while both WS-Mn and EX-Mn fractions correlated significantly and positively with Mn concentration and uptake by maize plants grown in these soils. The AB-DTPA (pH 7.6) and DTPA (pH 5.3) appeared suitable to assess the availability of Mn in acidic soils.
引用
收藏
页码：886 / 897
页数：12
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