Complex soil analysis includes determination of basic and additional agricultural chemistry parameters:
– acidity of soil,
– organic matter,
– maintenance of accessible forms of nitrogen, phosphorus, potassium,
– maintenance of calcium, magnesium and sulphur,
– maintenance of micronutrients, such as zinc, manganese, copper, iron, boron, molybdenum and cobalt,
– soil texture.
Determination of all these parameters helps to find out potential of soil and optimize the mineral nutrition of plants.
To get the information about importance of each of elements, you can from article – look here