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Effective rooting depth of the plants to be watered, which affects how much water can be stored in the soil and made available to the plants. Current watering requirements of the plant (which may be estimated by calculating evapotranspiration , or ET), often expressed in inches per day.
Catchments are commonly used to determine sprinkler DU and one must be reminded that data collection most often occurs above grade and above the root zone where plant uptake normally occurs. Many factors may affect water distribution or redistribution between catchment plane and root zone; slope, plant canopy, thatch, mulch, infiltration rate ...
Grouping plants into hydrozones is an approach to irrigation and garden design where plants with similar water needs are grouped together. Through the practice of hydrozoning, it is possible to customize irrigation schedules for each area’s needs, improving efficiency and avoiding overwatering and underwatering certain plants and grasses. [2]
For example, the typical professional controller will calculate the actual flow rate running in the system when a specific zone is operated, compare this to a pre-configured required amount, and adjust the irrigation process if deviation from the zone's flow rate is detected; This mechanism is called "Flow monitoring", and can prevent ...
A typical lawn sprinkler system will consist of one or more zones, limited in size by the capacity of the water source. Each zone will cover a designated portion of the landscape. Sections of the landscape will usually be divided by microclimate , type of plant material, and type of irrigation equipment.
Cross-section of a hillslope depicting the vadose zone, capillary fringe, water table, and phreatic or saturated zone. (Source: United States Geological Survey.) Infiltration is the process by which water on the ground surface enters the soil. It is commonly used in both hydrology and soil sciences. The infiltration capacity is defined as the ...
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Micro-irrigation supplies water only where it is required and delivers water directly to the root zone of plants at a lower flow rate, allowing the water to soak into the soil rather than run off. According to research, micro-irrigation systems consume 20–50% less water than traditional spray sprinkler systems. [4]
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