Results 141 to 150 of about 1,437 (176)
Some of the next articles are maybe not open access.
Organic P in soil and its extraction by Mehlich 3 method.
2023Phosphorus (P) is limiting plant nutrient in natural and agriculturally used soils. P is presented in soil composition of various inorganic (mineral) and organic compounds.  Organic P compounds are very strongly adsorbed on the mineral surfaces and are therefore not available to the plants.
Tõnis Tõnutare +4 more
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
openaire +1 more source
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
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.
openaire +1 more source
Estimating soil phosphorus sorption saturation from Mehlich-3 data
Communications in Soil Science and Plant Analysis, 2002Soil phosphorus sorption saturation (Psat) measures the degree to which soil phosphorus (P) sorption sites have been filled and has been found to be a good indicator of P availability to runoff and leachate. At present, analytical methods required to estimate Psat are generally not offered by soil testing laboratories.
Peter J. A. Kleinman, Andrew N. Sharpley
openaire +1 more source
COMPARISON OF BRAY-1 AND MEHLICH-3 TESTS IN HIGH PHOSPHORUS SOILS
Soil Science, 2005Soil testing forms the basis for both agronomic recommendations and phosphorus (P) runoff risk assessment. Although several studies point to good linear correlations between Bray-1 and Mehlich-3 P in the agronomic soil test range, it is not known how these tests compare for soils that test very high in P and are of environmental concern. Our objectives
Q. M. Ketterings, M. Flock
openaire +1 more source
Mehlich 3 extractable nutrients as determined by near-infrared reflectance spectroscopy
Canadian Journal of Soil Science, 2009Near-infrared reflectance spectroscopy (NIRS) is a cost-effective and environmentally friendly technique of soil analysis that is particularly advantageous in intensive soil sampling and soil nutrient management as well. This study evaluated the potential of NIRS for predicting P, K, Ca, Mg, Cu, Zn, Mn, Fe, and Al extracted by Mehlich 3.
C Nduwamungu +3 more
openaire +1 more source
Integrating the mehlich‐3 extractant into existing soil test interpretation schemes
Communications in Soil Science and Plant Analysis, 1996Abstract Nutrients were extracted from samples of two Ohio soils derived from Wisconsin‐age glacial till, a Crosby silt loam (Aerie Ochraqualfs, fine, mixed, mesic) and a Hoytville silty clay (Mollic Ochraqualfs, fine, illitic, mesic) using the Mehlich‐3 extractant, and also using Bray‐1 for phosphorus (P) and ammonium acetate (NH4OAc) for potassium (K)
D. J. Eckert, M. E. Watson
openaire +2 more sources
Differences of Phosphorus in Mehlich 3 Extracts Determined by Colorimetric and Spectroscopic Methods
Communications in Soil Science and Plant Analysis, 2005Abstract Mehlich 3 (M3) is a widely used extractant for evaluating plant available phosphorus (P) in soils and may be quantified using colorimetric or inductively coupled plasma (ICP) spectroscopic methods. Analysis by ICP has recently become increasingly popular in soil‐testing labs primarily due to its ability to simultaneously measure multiple ...
J. J. Pittman +3 more
openaire +1 more source
Mehlich-3 solution as an extractant for multi-element analysis of soil samples
2023Extraction ability of the Mehlich-3 solution was compared to other two extraction reagents (namely, aqua regia and deionized water) that are more commonly used and cited in the literature. The results show that, despite the weaker extraction power of the Mehlich-3 solution in comparison to aqua regia, the micronutrients Ca, Cu, Fe, K, Mg, Mn, Na, P, S,
Roje, Vibor +4 more
openaire +3 more sources