Question

Explain how nature of soil determines the need for irrigation?

Answer 1

The nature of soil determines the need for irrigation because different soils have different water-holding capacities.

1. Sandy Soil: Sandy soils have large particles with broad spacing between them, resulting in high porosity and rapid drainage. Because sandy soils cannot store moisture and water percolates downward fast, crops planted in them require frequent, light watering (such as drip or sprinkler systems) to keep the root zone moist.
2. Clayey Soil: Clayey soils are made up of very fine, tightly packed particles that retain water extraordinarily well. Because of their limited permeability, they hold moisture for long periods of time, necessitating less frequent but heavier irrigation. However, careful management is required, since excessive irrigation can quickly result in waterlogging and root suffocation.
3. Loamy Soil: Loamy soil is a well-balanced mixture of sand, silt, and clay, making it good for agriculture. It has a moderate water-holding capacity, retaining sufficient moisture for plants while allowing excess water to drain away naturally, requiring a standard, regular irrigation schedule.