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Larisa Golovko 1

Anatoly Pozdnyakov 2

Landviser, LLC

1 RiceTec, Inc - Houston, TX USA2 Moscow State University, College of Soil Science Moscow,

RUSSIA

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just dirtall soils are the samesubstrate for plantsI just add water and fertilizer, use prime seeds myyields will be high

2

Those opinions are very shallow!

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Parent material (geology)Climate (temperatureand precipitation)TopographyVegetationTime

4

If we can map and understand soils, we can understandthe basics of any agro-ecosystem!

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Prime land11%

Too dry28%

Too humid10%

Chemicallyimbalanced

23%

Too shallow22%

Permanently

frozen6%

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Water quality?Soil quality?Soil horizons?Groundwater depth?

EC/ER is a good RS indicator of soil and waterquality, especially salinity levels and GW depth!

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Fits in shirt pocketRuns all season from standard9V battery

Measures EC/ER in soil, water,food samples as well as in thefield soils from 2 cm to ~10 mdepth

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Probes can be made to anysize/configuration frommaterials available in anylocal hardware store:

Nails/screwsIsolated wiresbanana- plugsPVC pipes,

plastic or wood

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Chemical properties: saltcontent, CEC, humuscontent, etc.

Intrusions of highresistivity: stones and oil

Physical properties: bulkdensity, water content,temperature, texture

Water movement; soilfreezing-melting, soilcompaction or mixing

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Spatial variabilityTemporal variability

Many samples areneeded tocharacterize asingle field.

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management practiceswater table depthssoil propertiesevapotranspiration rates

rainfallssalinity levels ofgroundwaterhydrogeological conditions

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18

0

20

4060

80

100

120140

1 10 100 1000 10000AB/2 cm

E R ,

O h m

m

Water

table

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Good soil EC in top 30 cm < 1.5 dS/m measured inflooded or mud conditions

EC of irrigation water

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25

35

45

55

65

75

85

95

C o c

o d r i

e

T r e n a

s s e

J u p i t e

r

C y p r

e s s

C L X

L 7 3

0

X P 7 2

3

R U

0 5 0 2

1 3 7

R U

0 5 0 1

1 0 2

R U

0 4 0 2

0 9 7

C h e

n i e

r e

% o

f h e a l t h y p l a n t s

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