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<br />, <br /> <br />5. Find the average depth of water collected in the containers by adding all the measurements and dividing by <br />the number of containers used. <br />Example: The sum of the 6 containers is 1218". <br />12/8" / 6 containers = 2/8" (or 1/4") <br /> <br />6. To calculate the amount of water the zone or sprinkler releases in inches per hour, multiply the amount in #5 <br />by four. Remember to repeat these steps for additional zones or sprinklers. <br />Example: (l/4 in'!lS min.) x 4 = 1 in.!hr. <br /> <br />After you have completed this procedure, you will not have to repeat it, unless your sprinkler system is changed. <br /> <br />After calculating the hourly amount of water released, you can easily determine the necessary operating time for <br />each zone or sprinkler from the following equation. The -water the plants need" quantity in the equation is provided <br />in the general guideline above, or more accurately, it is publicized in the local media. <br /> <br />Minutes required to = Water the plants need (inches) x 60 <br />run each zone Calibrated irrigation rate (in./hr.) <br /> <br />Example: If the plants within one zone require 1.5 inches of water and that irrigation zone applies I inch per <br />hour, you need to operate that zone for 90 minutes. <br /> <br />Note: <br />a) The lawn watering values publicized are for bluegrass turf. Most trees. shrubs, and other plants used in our <br />landscapes require less than this amount. Additionally, there are drought-tolerant lurfgrasses that require <br />substantially less water than bluegrass. Contact the Water Utility at 221-6681 for additional information. <br /> <br />WATERING IN GENERAL: <br />. After a significant rainfall, there is no need to water. Listen to a local radio station or read the daily <br />newspaper for amounts of precipitation, or use a rain gauge. <br /> <br />'~.- <br /> <br />. Let the moisture status of your landscape and the media-publicized lawn watering values be the guide to <br />watering, rather than the calendar. <br /> <br />. Use ihe media-publicized lawn watering values as a reference point. Your lurfwill vary somewhat from these <br />values dependent upon: exposure, turf condition, soil type, and maintenance practices. Adjust the lawn <br />watering values to your landscape by gelling more familiar with it. After some practice. a brief analysis of <br />your soil and plants will yield accurate information on its cUlTent water status. <br /> <br />· Symptoms of moisture stress vary with the kind of plant. They include wilting leaves. changes in appearance <br />of leaves (for example, bright green leaves turning dull). and foot prints left in grass. If grass tops begin to <br />turn brown and die, it has gone without water too long. <br /> <br />. Disregard the dusty surface of soil, but fmd out whether the soil around the roots is drying. To do this. use <br />a long screwdriver or long thin metal rod to push into soil; it inserts easily when soil is moist and there is <br />noticeably more resistance when soil is dry. <br /> <br />. Better yet, use a soil probe to monitor soil moisture. It is used to withdraw a soil "profile". Generally <br />speaking, with our clay and clay loam soils, a soil sample should form a ball. If it is somewhat crumbly, but <br />will hold together with pressure, it is approaching time to irrigate. <br /> <br />. Lawns in shady areas and areas protected from the wind normally need less water. <br /> <br />· Clay soils hold moisture longer than sandy soils and therefore require water less often. <br />