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SOLBERG PIT SEEDING -BROADCAST RATES <br />(DIVIDE BY 2 FOR DRILLING) <br />SPECIES PLS <br /> Ib/acre seeds/lb seeds/sq ft <br />Western Wheatgrass 6 126,000 17.3 <br />Sideoats Grama 4 143,000 13.1 <br />Blue Grama 1 711,000 16.3 <br />Little Bluestem 2 225,000 10.3 <br />Green Needlegrass 3 181,000 12.4 <br />Intermediate Wheat 5 97,000 11.1 <br />Regreen 15 75,000 <br />TOTALS 36 1,558,000 80.7 <br />The seed mixture shown includes 15 pounds per acre of Regreen, a sterile hybrid of <br />winter wheat and native wheatgrass. This is used as a cover crop to help control erosion <br />in the early stage of vegetation development. This species will survive for two or three <br />years. Because it is sterile it does not produce viable seed and will therefore disappear <br />after serving its purpose. The Regreen is not included in the seeds per square foot total as <br />it is a cover crop and will not become a part of the final grass community. <br />As indicated in earlier discussions fertilizer should not be needed with these species of <br />grass. Fertilization would act to enhance weed growth. In addition it would create a <br />condition that would favor cool season species at the expense of warm season species. <br />The native vegetation in this area is a blend of cool and warm season species. Therefore <br />to produce the best match between the final vegetation on this site and the surrounding <br />areas, fertilizer should not be use except to correct nutritional deficiencies if they become <br />evident in the vegetation. No fertilizer will be used in the revegitation process. <br />Weed control may be necessary on this site depending on weather conditions during the <br />first two years of growth. If conditions are wet then weeds may become a problem. Under <br />normal to dry conditions weeds may still be present but not problematic. Weed control <br />will be by either mechanical or chemical means depending on the species that needs <br />control. Which method used will be left to the permittee. <br />Mulching should not be needed when using to proposed species of grass. Like fertilizer, <br />mulch tends to favor the cool season species. In addition the high carbon content of <br />mulches often makes it necessary to add fertilizer to avoid a nitrogen deficiency in the <br />soil. Mulch can help with the establishment of the seed however it tends to distort the <br />species balance. In a dry land situation it is difficult to determine the rate at which mulch <br />will decompose. This makes it difficult to determine the amount of additional nutrients <br />to be added to the soil. If the decomposition rate is slower than expected then the <br />