John is a farmer. He wanted to check whether the soil on his land has any limitations for cultivating a particular crop. The test result showed that the soil belongs to the IVw class. What is the dominant limitation in the soil on John's land according to the test results?

The soil is not fertile and unsuitable for agricultural use

Explanation:

The class IVw soil is highly prone to erosion by the agents such as wind and water. They have a very poor drainage system. They are not so favorable for the cultivation of crops. The areas where the water table is shallow, it requires proper drainage pattern for the production of agricultural crops.

Thus, John carried out the soil test and determined that it belongs to the IVw class, which has certain limitations, such as the soil is not favorable for agricultural purposes as there occurs frequent erosion.

The IVw class is one of the pooly suited soils for crop use and agricultural use. They are very susceptible to water and wind erosion and they have poor drainage. They are more suited for tree or shrub establishments.