FIELD: agriculture.
SUBSTANCE: to assess the humus concentration in chernozem soil samples by the petromagnetic method, soil samples are selected in the arable horizon, in which the magnetic susceptibility value kref is determined. Thereinafter the samples are heated to 550°C and, after their cooling down, the magnetic susceptibility value kheat is re-determined. The increment ratio of the magnetic susceptibility value kt is calculated by the formula kt=kheat/kref, wherein the humus content is assessed as directly proportional to the kt ratio.
EFFECT: fast and accurate method for quantitative assessment of humus in the soil.
1 tbl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR ESTIMATING CONDITION OF HUMUS TYPE SOIL | 2006 |
|
RU2322671C1 |
| METHOD OF ASSESSING SOIL AND SOIL PRODUCTIVITY | 0 |
|
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| EXPERIMENTAL-ANALYTICAL METHOD FOR DETERMINING MINIMUM MOISTURE CAPACITY OF CHERNOZEMS AND CHESTNUT SOILS | 2019 |
|
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| METHOD OF ESTIMATING SOIL QUALITY | 2003 |
|
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| METHOD OF DETERMINATION OF ARABLE TURF PODZOL SOIL WASH-AWAY DEGREE | 0 |
|
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| BIOCHEMICAL METHOD FOR DETERMINING OF EFFECTIVE FERTILITY OF SODDY PODZOLIC SOIL | 2002 |
|
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| METHOD OF DEFINING SOIL GLEYING DEGREE | 2006 |
|
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| METHOD FOR ASSESSING EFFECT OF ANTHROPOGENIC LOADS ON SOIL COVERING OF CHERNOSEM-FOREST-STEPPE ZONE | 1990 |
|
RU2011199C1 |
| METHOD OF DETERMINING CONTENT OF MAGNETITE AND MAGHEMITE IN SOIL | 2005 |
|
RU2369869C2 |
| METHOD PREDICTING PERSPECTIVE OF AREAS FOR OIL AND GAS | 2002 |
|
RU2215309C1 |
