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Upon completion of any hay cutting and baling operation in any irrigated hayland field, a count <br />of the total number of bales per field was made. Next, an adequate sample of the bales in <br />each field was weighed in the field using a Fairbanks Model 41-3132 portable scale. This scale <br />has a maximum capacity of 1,000 pounds and is accurate to the nearest pound. A minimum of <br />15 bales were weighed in each field. Care was taken to select bales from throughout a field, or <br />in cases where the bales had already been stacked, from many locations in the stack. At the <br />time of weighing, sub -samples of hay were collected from a portion of the bales, weighed using <br />Pesola field scales, bagged and labeled, and returned to the laboratory for analysis. In the <br />laboratory, sub -samples were dried at 30°C for 72 hours, or until a constant weight was <br />obtained, and reweighed using an Ohaus top -loading electronic balance which is accurate to <br />0.01 gm. This provided an adjustment factor needed to determine dry weight production for the <br />fields. The hay production in the fields, expressed on a dry weight basis as pounds/acre, was <br />calculated by multiplying the total number of bales counted in a field by the average adjusted <br />bale weight and dividing by the size of the field in acres. <br />Peabody intended to measure production in the irrigated cropland type by weighing loaded <br />trucks (which had been tared) during the harvest season. However, yield data could not be <br />collected during the 1987 sampling season because the majority of fields were left fallow until <br />spring replanting. A single field in the western portion of the study area was planted to wheat, <br />but the landowner decided not to attempt a harvest because the yield was too poor to make <br />harvesting worthwhile. Prior to maturing of the remaining grain, he grazed the crop with sheep. <br />4.8 Woody Plant Densities - 1987 Woody plant densities were measured in the sagebrush <br />type and willow component of the swale/drainage type using belt transects. All trees, shrubs, <br />sub -shrubs, succulents, and agavoids were included in the counts. A species was counted for <br />density when at least 50 percent of the crown emerged within the belt. A 2m x 25m belt, <br />originating at the randomly -located sample point and extending in a random direction, was <br />used in the sagebrush type. A randomly -located 0.5m x 2.Om belt was used in the willow <br />component of the swale/drainage. This small belt size was selected on the basis of the <br />extremely dense character of the willow thickets. <br />Woody plant densities were measured in the irrigated pasture vegetation type using direct <br />counts from 1" = 500' color aerial photography with field checks for verification. <br />February 2015 (TR -66) 2.04.10-20 <br />