pH  - - Soil. Organic and Natural Products - Fertilizer
pH - Soils. Organic and Natural Products - Fertilizers
PH SOIL ANALYSIS : Soil and pH - The soil pH measures active soil acidity or alkalinity. A pH of 7.0 is neutral. Values lower than 7.0 are acid; values higher are alkaline. Usually the most desirable pH range for mineral soils is 6.0 to 7.0 and for organic soils 5.0 to 5.5. The soil pH is the value that should be maintained in the pH range most desirable for the crop to be grown.
Buffer pH - This is an index value used for determining the amount of lime to apply on acid soils to bring the pH to the desired pH for the crop to be grown. The lower the buffer pH reading the higher the lime requirement.
Nitrogen (N)
Phosphorus (P)
Potassium (K)
Calcium (Ca)
Magnesium (Mg)
Sulphur (S)
Copper (Cu)
Iron (Fe)
Manganese (Mn)
Zinc (Zn)
Sodium (Na)
Salt Salinity
N-P-K  -
Fertilizer Soil PH 2022
Soil pH keys soil fertility Successful Farming
Adapting to the uncertainty with crop inputs – Ohio Ag Net Ohio's Country Journal and Ohio Ag Net
N may be making your soils more acidic Alberta Express
Soil pH: A study Carried Out in Two Villages of Mao Eastern Mirror