Which soil class is worst for cultivating plants?

• A. Class I
• B. Class II
• C. Class III
• D. Class VIII

Answer: (D)

Soil classes measure how strongly soil properties limit crop production. The lower the class, the greater the constraints. Soils in the lowest class have severe limitations—very shallow or rocky depth, poor structure, high salinity or sodicity, poor drainage, high erosion risk, or other factors that stop roots from growing well and hinder water and nutrient availability. Because of these extreme constraints, class VIII is considered not suitable for normal cultivation and would require expensive reclamation or be used only for non-cropping purposes. The higher classes indicate progressively fewer limitations and are more favorable for growing crops. That’s why the worst choice is the lowest class.