Which adjustment is explicitly listed under sprinkler spacing options to account for environmental variability?

• A. Adjust for Humidity
• B. Adjust for Wind
• C. Adjust for Soil Type
• D. Adjust for Temperature

Answer: (B)

Environmental variability affects where water lands from a sprinkler, especially wind. When wind is present, spray is carried downwind, which can reduce coverage on the upwind side and create overspray or runoff on the downwind side. To keep the irrigation pattern overlapping and uniform, spacing is adjusted to compensate for wind, making this the most appropriate choice. Humidity and temperature influence evaporation but don’t directly change the spatial distribution in the same way, and soil type affects infiltration more than the distance between sprinklers. So, adjusting for wind is the adjustment that's explicitly used to account for environmental variability in spacing.