Root density is higher under

A. Dry

B. Dryland

C. Rainfed

D. Irrigated

Answer: Option D

Solution(By Examveda Team)

The root density is the estimate of soil volume explored by a root system and consequently the amount of water and nutrients available to the plant.
Root density is higher under irrigated soil in comparison to dry soil or soil of dryland or rainfed area. This is because the moisture and water content in the soil leads to more supply of nutrients which ultimately enhance the density of roots.