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Let’s read soil analysis results

Let’s read soil analysis results
FieldSamplepH
wat.
рН
sal.
рН
buf.
Cond.
mS/cm
О.M.
%
NO3-N
ppm
P(M)
ppm
P(B)
ppm
NH4ОAc

CEC
  meq/ 100g

Base saturation

SO4-S
ppm

DTPA

B
ppm

Mo
ppm

Ca
ppm

Mg
ppm
K
ppm

Na
ppm

H %

Ca %Mg %K %

Na %

Zn
ppm

Mn
ppm
Fe
ppm

Cu
ppm

1

7,90,292,54,225

5565

375249

22

31,7

0,087,89,92,00,3

7,6

0,342,687,150,600,550,25

Soil texture

Field

Sample% Sand% Silt% ClaySoil type

1

20,5049,0030,50

Clay loam

Fertilizer recommendations kg/ha 

Date

FieldSample

Crop

Crop Yield

NitrogenP2O5K2OLime
t/hа
Gypsum
t/hа
MgОZnMnCuFeMoS

B

10.03.2020

1Corn10,0 t/hа1653510,91,110

10.03.2020

1Sunflower4,0 t/hа120454,61,17

10.03.2020

1Soybean3,0 t/hа2510,91,59

Soil pH (7.9) is alkaline.

Soil salinity  (Сond = 0.29) is within optimal values.

Soil organic matter level  (OM = 2.5) refers to average values.

The available phosphorus (P = 25 ppm) and exchangeable potassium (K = 249 ppm) are within the mean values ​​(P) and very high values ​​(K).

The values ​​of the exchangeable forms of calcium (Ca = 5565 ppm) and magnesium (Mg = 375 ppm) are within high values.

Microelements such as: copper (Cu = 0.6 ppm), iron (Fe = 7.15 ppm), molybdenum (Mo = 0.25 ppm) and boron (B = 0.55 ppm) indicate their complete suitability for the specified crops and planned yield. Zinc (Zn = 0.34 ppm), manganese (Mn = 2.68 ppm) and sulfur (S = 7.6 ppm) are in low level.

Sulfur deficiency can be eliminated by introducing ammonium sulfate (NH4) 2SO4; dose of ammonium sulfate kg / ha = Sulfur x 5.

On maize in the 9-10 leaf phase, on soybean in the 5th trefoil phase and on sunflower in the inflorescence phase, eliminate zinc and manganese deficiency by foliar application of zinc salts (zinc sulfate ZnSO4 · 7H2O) and manganese salts (manganese sulfate МnSO4·5H2O). ) with a chelating agent (EDTA / Trilon B or OEDP).

Zinc deficiency can also be eliminated by spreading zinc sulfate (ZnSO4 · 7H2O) in the amount of: 50 kg / ha – on corn and soybeans; 20 kg / ha – on sunflower.