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.