Magnesium in soils and plants of a sloping agrolandscape in the south-east of West Siberia
Open Access
- 30 December 2019
- journal article
- Published by Institute of Soil Science and Agrochemistry of the Siberian Branch in Почвы и окружающая среда
- Vol. 2 (4), e91
- https://doi.org/10.31251/pos.v2i3.91
Abstract
The aim of the study. To carry out a comparative assessment of the magnesium status in soils, situated on the various hypsometric levels of sloped agrolandscape and with different soil organic matter content by measuring total, mobile (exchangeable) and water-soluble magnesium in soils and to compare different analytical methods for determining magnesium in soils and plants. Location and time of the study. The study site was located in the Cis-Salair drained plain in the south-east of West Siberia (55˚02΄20˝N; 83˚50΄00˝E), administratively being within the boundaries of the Toguchin district of the Novosibirsk region, Russia. Altitude increments were marked on the slope positions of the investigated plot of 225 hectares in area and 4 km in length: the upper part of the slope BCI (280-310 m a.s.l. ), the midslope BCII (260-280 m) and BCIII (220-260 m), and the lower slope BCIV (190-220 m) (see figure 1). Soil and plant samples were collected in July 2013. Materials and methods. Prevailing soils were podzolized and leached chernozems, dark-gray and gray-forest soils according to the classification of soils of the USSR (1977), which correspond to clayey-illuvial eluvialed and dark-tongue agrochernozems, agro-dark gray soils and agro-gray soils to according of the Russian soil classification (2004, 2008), or Luvic Greyzemic Chernozems, Haplic Chernozems, Luvic Greyzemic Phaeozems, Luvic Retic Greyzemic Phaeozems by WRB Soil Classification (2014) (see table 1, figure 1). Individual soil samples (n=55) were taken with a drill from 0-30 cm layer (ploughed horizon) according to an irregular grid. The aboveground phytomass stock of oat-pea mixture (n=38) was collected using the hay cutting method on the 0.25 m2 area. The geographical coordinates of the soil and plant sampling sites were determined using the geopositioning system (GPS, Garmin eTrex Vista). The soil samples were analyzed for organic carbon content by dichromate digestion. Overall the studied soils were grouped according to soil organic matter (SOM) content into high-SOM (5-8%) and medium-SOM soils (3-5%). Total magnesium (Mgtot) was measured in dry powdered samples by atomic emission spectrometry; mobile (exchangeable) magnesium was measured by atomic absorption spectrometry using 1 M KCl, 1 M CH3COONH4, 0.1 M C4H4O5(NH4)2 and 0.5 M CH3COOH as extracting solutions. The same extracts were used to measure water-soluble magnesium atomic absorption spectrometry and capillary electrophoresis. The content of total magnesium in plants was determined by atomic absorption spectrometry using two methods of sample digestion, namely wet ashing in a mixture of sulfuric and perchloric acids and dry ashing followed by quantitative transfer of the digest with 1 M HCl. Magnesium content in soils and plants was presented per element and calculated on the air-dry mass basis. Statistical analyses (descriptive statistics, correlation analysis, calculation of student criterion and Mann-Whitney...Keywords
This publication has 14 references indexed in Scilit:
- Application of NDVI in Digital Mapping of Phosphorus Content in Soils and Phosphorus Supply Assessment in PlantsIzvestiya, Atmospheric and Oceanic Physics, 2019
- CONTENTS OF MAGNESIUM IN THE ENVIRONMENT AND POPULATION MORBIDITY RATE OF ARTERIAL HYPERTENSIONHygiene and sanitation, 2019
- Fertility of soils on slope, yield structure and quality of spring wheat in the south of Western SiberiaПочвы и окружающая среда, 2018
- Digital mapping of soil fertility index calculated for arable soils of the Cis-Salair Drained PlainПочвы и окружающая среда, 2018
- Indicative capacity of NDVI in predictive mapping of the properties of plow horizons of soils on slopes in the south of Western SiberiaEurasian Soil Science, 2017
- The methods of geomorphometry and digital soil mapping for assessing spatial variability in the properties of agrogray soils on a slopeEurasian Soil Science, 2017
- SOIL AND HUMAN HEALTHScience almanac of Black sea region countries, 2017
- Temporal changes of eroded soils depending on their agricultural use in the southern Cis-Ural regionEurasian Soil Science, 2016
- Classification of Soils: World Reference Base (WRB) for Soil ResourcesPublished by Springer Science and Business Media LLC ,2012
- The availability of base elements (Ca, Mg, Na, K) in some important soil types in SerbiaZbornik Matice srpske za prirodne nauke, 2003