Re-evaluation of manganese solubility as affected by soil sample preparation in the laboratory

Andrade, Emilene; Miyazawa, Mário; Pavan, Marcos Antonio; Oliveira, E. L. de

doi:10.1590/s1516-89132005000500017

Cited by 2 publications

(1 citation statement)

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“…Despite this limitation, altogether, these procedures suggest that mangroves act as an efficient biogeochemical barrier to metal transport (Cuzzuol and Rocha 2012). The dual role of Cu, Fe, Mn, and Zn, which can be either nutrients, or toxic elements in mangrove ecosystems, has been addressed by several studies (MacFarlane et al 2003;Andrade et al 2005;Kannappan et al 2012). They also have been investigated for their physiological functions together with the mechanisms that control their absorption or exclusion in the plants that grow in this ecosystem (Machado et al 2002;Cuzzuol and Rocha 2012).…”

Section: Introductionmentioning

confidence: 99%

Distribution of Cu, Fe, Mn, and Zn in Two Mangroves of Southern Brazil

Madi

Boeger

Reissmann

2015

Braz. arch. biol. technol.

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Section: Introductionmentioning

confidence: 99%

Distribution of Cu, Fe, Mn, and Zn in Two Mangroves of Southern Brazil

Madi

Boeger

Reissmann

2015

Braz. arch. biol. technol.

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Percent Relative Cumulative Frequency Approach to Determine Micronutrient Deficiencies in Soybean

Hitsuda

Toriyama

Subbarao

et al. 2010

Soil Science Soc of Amer J

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Critical micronutrient concentrations in soils and plants have not been clearly determined for marginal soils where deficiencies are likely to occur. The objective of this study was to develop a reliable method for assessing micronutrient deficiency in soils and plants. Soybean plants [Glycine max (L.) Merr.] were grown in the A and B horizons of two Brazilian Ustoxes and watered with a complete nutrient solution (i.e., control) or solutions lacking one of the following micronutrients: Mn, Zn, B, or Cu. Soybean plants were repeatedly grown in the same soils until maturity. The cumulative frequency of deficient plants where the relative seed dry weight was significantly decreased was recorded. The percent relative cumulative frequency (PRCF) is calculated as: cumulative frequency ÷ total number of tested plants × 100. A linear‐plateau regression line was fitted to the PRCF as a function of the micronutrient concentrations in the soil, the uppermost mature leaf, or seed. Critical concentrations (mg kg−1) for deficiency indicated as transition points of regression lines are: 6.4 for Mn (reference), 1.0 for Zn, 0.2 for B, and 0.2 for Cu in the soil (Mehlich‐I extraction for Mn, Zn, and Cu; hot 0.005 mol L−1 BaCl2 extraction for B); 63 for Mn, 34 for Zn, 25 for B, and 4 for Cu in the uppermost mature leaf; 55 for Mn, 42 for Zn, 14 for B, and 5 for Cu in seeds. Thus, this determination method can clearly identify the critical values for micronutrient deficiency in soils and in plant tissues.

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Re-evaluation of manganese solubility as affected by soil sample preparation in the laboratory

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Cited by 2 publications

References 7 publications

Distribution of Cu, Fe, Mn, and Zn in Two Mangroves of Southern Brazil

Distribution of Cu, Fe, Mn, and Zn in Two Mangroves of Southern Brazil

Percent Relative Cumulative Frequency Approach to Determine Micronutrient Deficiencies in Soybean

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