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• Pracual Approach~s~EH'ecu~~e E ~. S Control - 89 <br />(95 x 80) <br />= 76% <br />100 <br />If a recommended rate called for 36 Ibs of seed per acre, 50 lbs of this seed <br />batch (PIS 769b) would have to be applied. <br />38 Ibs (rate of application) <br />76% (Pure Live Seed) <br />= 50 Ibs (mixture) <br />It is of critical importance when using legumes in a mixture to make sure they <br />are "inoculated" with the appropriate strain of rhizobia, or bacteria. This <br />procedures enhances the plants ability to "fix" or utilized nitrogen, a beneficial <br />plant nutrient, <br />Field Notes: Some high rates of certain soil sealants can inhibit germination of <br />sealing the seed coat to where water cannot penetrate through it. This is <br />usually not a problem in that these higher application rates are generally rued <br />for dust control and in situations where revegetation is not parr of the BMP. <br />R Growth rate <br />BMPs should be evaluated on their ability to enhance the growth of plants, <br />when plane are pan of the system. Chemicals used to manufacture a product, <br />or chemicals which are introduced into the soil environment upon breakdown of <br />a product can have a beneficial or detrimental effect on plant growth. <br />Growth rate is a comparison of plant development utilizing a selected BMP to <br />plant development without using a BMP. Generally, the test is done in a <br />greenhouse environment on planting flats. The plants to be ultimately used in <br />the field are tested, although some[imes quick growing annual grasses are <br />substituted when appropriate. <br />AM Moisture Retention <br />This variable reflects the capability of a BMP to adsorb or absorb water. The <br />measurement is usually expressed as a percentage of material weight. <br />As previously suggested in the section dealing with infiltration, a material's <br />ability to retain moisture is not a beneficial characteristic; what is imponant is <br />O 1995 IECA <br />