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the natural topography or landform. These areas are too small to stratify out from the type. <br />Land leveling or shaping to overcome these problems has not been done to any great extent <br />within the study area. Ground water seeps and boggy areas from irrigation runoff and irrigation <br />recharged ground water systems contribute to areas of higher production or occur as the <br />swale/drainage vegetation type. <br />The overall composition and species diversity of the site is indicative of the generally poor <br />condition of the irrigated pasture type. Both Kentucky bluegrass and buckhorn plantain <br />dominate the composition of the stand and have frequencies of occurrence of greater than 85 <br />percent (see Table 2.04.10-15). The considerable presence of quackgrass, field bindweed, <br />and dandelion is also indicative of the deteriorated pasture condition. Most of the operators <br />contacted indicated that a standard pasture mix originally was used to establish most of the <br />pastures. Smooth brome (Bromopsis inermis ssp. inermis), orchardgrass, timothy, white Dutch <br />clover, and red clover occurred in the pasture type and are normally included in standard <br />irrigated pasture mixes. <br />Nootka rose (Rosa nutkana) is a common invader shrub of irrigated pastures in the Nucla area, <br />with Russian olive (Eleagnus angustifolia) and elm (Juglans nigra) occurring at lesser levels <br />where pastures have been abandoned. <br />6.3 Irritated Pasture - Hayland Type (IPH) Since this description was originally written by IRI <br />in 1999, the Morgan fields east of the fenceline in the southwest portion of the 1999 study area <br />have been re-classified as Irrigated Cropland (IC). Therefore, the discussion and tables for this <br />vegetation type include Morgan fields which are Irrigated Cropland (IC). <br />The irrigated pasture hayland fields generally occur on soil map units 98D and 98E (NHM <br />2.04.9 - Soil Resource Information) within the study area. Slopes range 1 to 4 percent with a <br />small area of slopes up to 6 percent. Results are summarized in Table 2.04.10-18. <br />Johnson's property has two hayland fields that yielded similar production. The first pasture on <br />the western portion of the property is 20 acres in size. The field is primarily grasses and forbs <br />with approximately 5 percent alfalfa. The field yielded 1,024 bales on the first cutting with an <br />average bale weight of 86 Ib/bale. The production for this field was 88,064 pounds (1024 bales <br />X 86 Ib/bale) or 4,403 Ib/acre (2.2 tons/acre). The second field on the southern part of the <br />February 2015 (TR -66) 2.04.10-58 <br />