Results 191 to 200 of about 16,072 (233)
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Evaluation of Mehlich 3 reagent as a multielement extractant in mine soils
Land Degradation and Development, 1999The usefulness of Mehlich 3 (M3) reagent was evaluated as a method to extract numerous elements from coalmine soils in As Pontes (Spain) showing a wide range of physicochemical properties. Critical levels (deficiency and/or toxicity) were established for plant available elements extracted by this reagent. The M3 method was compared to 1M NH
E Alvarez
exaly +2 more sources
Mehlich 3 Soil Phosphorus as Determined by Colorimetry and Inductively Coupled Plasma
Communications in Soil Science and Plant Analysis, 2009Inductively coupled plasma (ICP) emission spectroscopy is routinely used in laboratory testing to determine soil P extracted by Mehlich 3 (M3P). The effectiveness of ICP, however, has been questioned, particularly when used to detect soil P. Our objective was to compare ICP (M3P‐ICP) with colorimetric (M3P‐Col) methods of determining soil M3P.
Noura Ziadi, Bernard Gagnon
exaly +2 more sources
Evaluation of Mehlich 3 as a Universal Nutrient Extractant for Australian Sugarcane Soils
Communications in Soil Science and Plant Analysis, 2012This study evaluated the suitability of the Mehlic h3 universal extractant as a part of a multielement test to assess the nutrient status of Australian sugarcane soils. Soil samples from BSES Soil Exchange Programs, representing all major soil types and geographic sugarcane-growing regions, were analyzed using existing BSES, acid-based extraction ...
Zofia A. Ostatek-Boczynski +1 more
exaly +2 more sources
Soil phosphorus content determined by Mehlich 3 and modified Mehlich 3 methods
2023During the last century multiple methods have been developed for the determination of the amount of plant available nutrient elements in the soil. One of the critical nutrient elements in soil is phosphorus. Most of the phosphorus exists in soil in the form of insoluble inorganic and organic compounds.
Tonu Tonutare +4 more
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Comparison of mehlich‐1 and mehlich‐3 extractable soil boron with hot‐water extractable boron
Communications in Soil Science and Plant Analysis, 1992Abstract The standard hot water extractant for soil boron (B) was compared with two extractants currendy in use by routine soil testing laboratories, Mehlich‐1 (M‐1) and Mehlich‐3 (M‐3). If routine extractants could be used for B, it would save the time and expense required for a separate extraction.
L.M. Shuman +6 more
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Mehlich‐3 phosphorus buffer coefficients
Communications in Soil Science and Plant Analysis, 1998Abstract Phosphorus (P) fertilizer recommendations can be improved if the amount of P required to raise the soil test to a desired value is known. The objective of this study was to determine the increase in soil test P per unit of applied P, the P buffer coefficient, in the laboratory by various means and to compare those values with P buffer ...
L. F. Sobral, B. F. Aquino, F. R. Cox
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Mehlich-3BR: extrator Mehlich-3 modificado
2023Para avaliar a fertilidade dos solos, é fundamental ter a estimativa dos teores disponíveis dos nutrientes no solo. Para isso, utilizam-se extratores químicos sensíveis às frações dos nutrientes no solo, que garantam a disponibilidade deste para as plantas.
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Soil Science, 1993
Mehlich 1 (M1), Mehlich 3 (M3), and Ammonium Bicarbonate DTPA (AB-DTPA) have been used to determine the available micronutrients in soils. However, the forms of micronutrients extractable by these extractants are not known. The objectives of this study were: (i) to examine the correlation between the forms of Zn or Cu (readily soluble, organically ...
B. ZHU, A. K. ALVA
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Mehlich 1 (M1), Mehlich 3 (M3), and Ammonium Bicarbonate DTPA (AB-DTPA) have been used to determine the available micronutrients in soils. However, the forms of micronutrients extractable by these extractants are not known. The objectives of this study were: (i) to examine the correlation between the forms of Zn or Cu (readily soluble, organically ...
B. ZHU, A. K. ALVA
openaire +1 more source
DTPA AND MEHLICH-3 MICRONUTRIENT EXTRACTABILITY IN NATURAL SOILS
Communications in Soil Science and Plant Analysis, 2002Most soils of the humid area in the Iberian Peninsula are characterized by acid, desaturated, organic rich surface horizons. In this study micronutrients (Cu, Fe, Mn and Zn) were extracted using DTPA and Mehlich-3. Total contents were also determined by digestion with nitric acid.
Raquel Caridad Cancela +2 more
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Mehlich 3 or modified olsen for soil testing in Malawi
Communications in Soil Science and Plant Analysis, 1999Abstract Soil nutrient extraction methods, which are currently being used in Malawi, are time consuming and require too many resources. The use of a universal soil extractant would greatly reduce resource requirements. The objectives of the study were to (i) compare the universal soil extractants, Mehlich 3 (M3) and Modified Olsen (MO) with ammonium ...
A. D. C. Chilimba +2 more
openaire +1 more source