Let’s read soil analysis results
| Field | Sample | pH wat. |
рН sal. |
рН buf. |
Cond. mS/cm |
О.M. % |
NO3-N ppm |
P(M) ppm |
P(B) ppm |
NH4ОAc |
CEC |
Base saturation |
SO4-S |
DTPA |
B |
Mo |
||||||||||
|
Ca |
Mg ppm |
K ppm |
Na |
H % |
Ca % | Mg % | K % |
Na % |
Zn |
Mn ppm |
Fe ppm |
Cu |
||||||||||||||
|
1 |
– | 7,9 | – | – | 0,29 | 2,5 | 4,2 | 25 |
– |
5565 |
375 | 249 |
22 |
31,7 |
0,0 | 87,8 | 9,9 | 2,0 | 0,3 |
7,6 |
0,34 | 2,68 | 7,15 | 0,60 | 0,55 | 0,25 |
Soil texture
|
Field |
Sample | % Sand | % Silt | % Clay | Soil type | |
|
1 |
– |
20,50 | 49,00 | 30,50 |
Clay loam |
Fertilizer recommendations kg/ha
|
Date |
Field | Sample |
Crop |
Crop Yield |
Nitrogen | P2O5 | K2O | Lime t/hа |
Gypsum t/hа |
MgО | Zn | Mn | Cu | Fe | Mo | S |
B |
|
10.03.2020 |
1 | – | Corn | 10,0 t/hа | 165 | 35 | – | – | – | – | 10,9 | 1,1 | – | – | – | 10 | – |
|
10.03.2020 |
1 | – | Sunflower | 4,0 t/hа | 120 | 45 | – | – | – | – | 4,6 | 1,1 | – | – | – | 7 | – |
|
10.03.2020 |
1 | – | Soybean | 3,0 t/hа | – | 25 | – | – | – | – | 10,9 | 1,5 | – | – | – | 9 | – |
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.