How does soil type affect irrigation scheduling?

• A. Sandy soils need more frequent, shorter watering; clay soils hold more water and require less frequent, longer watering
• B. Clay soils hold more water and require less frequent, longer watering
• C. Sandy soils need less frequent watering
• D. Soil type has no effect on scheduling

Answer: (A)

Soil texture tells you how much water the root zone can store and how fast water moves through the soil. In irrigation scheduling, you match water applications to how quickly the soil dries out and how much water it can hold between irrigations.

Sandy soils drain quickly and hold little water, so the root zone dries out sooner. To keep plants from wilting, you irrigate more often with smaller amounts, just enough to replenish what the roots have used without wasting water.

Clay soils hold more water and drain slowly, so the root zone stays moist longer. You can water less often, but you apply a larger volume each time to bring the soil back up toward field capacity, while avoiding overflow or ponding.

In short, soil type directly shapes how much water you apply and how often, helping you tailor irrigation schedules to the soil’s storage and drainage properties.