Laserfiche WebLink
Crop Nitrogen Phosphorus P2O5) <br />Forage Crops (per active growing season) <br />Improved perennial grasses (i.e. maintenance fertilization of established pastures/ha fid <br />grazed 160 40 <br />hay or silage (assuming 4 harvests) 320 80 <br />Cool season annualrg asses <br />(e.g., grazed smallrag ins, ryegrass, fescue) 160 80 <br />Warm season annualrg asses <br />(e.g., sorghum-sudan hybrid or pearl millet) <br />grazed 160 40 <br />3. The NMP shall include realistic annual yield goals for each crop identified for each application zone, if <br />applicable. <br />4. The NMP shall include the soil phosphorus storage "capacity index" (CIl and soil phosphorus results from <br />6. The NMP shall include the percent water extractable phosphorus (PWEP) of each anticipated biosolids <br />source (permittees may use a weighted average or estimated weighted average when biosolids applied to an <br />application zone will be from multiple sources), <br />7. The crop nutrient needs for phosphorus may be adjusted as given in a. and b. below, based on the soil <br />phosphorus storage_ cap city index and the biosolids percent water extractable phosphorus when determining <br />biosolids application rates. <br />a. When the percent water extractable phophorus of biosolids is less than 14%, one of the following may be <br />used: <br />(I) When the soil phosphorus storage capacity index for an application zone is greater than 40 mg/kg, the water <br />extractable phosphorus value for the biosolids being applied may be used to adjust the amount of phosphorus <br />aqpplied. <br />(II) When the soil phosphorus storage capacity index is at least 20 mg/kg and up to 40 mg/kg, the amount of <br />to adiust the <br />(IV) When the soil phosphorus capacity index is less than 0 mg/kg, the amount of phosphorus shall not be <br />adiusted. <br />b. When the percent water extractable phosphorus of biosolids is 14% or greater, the amount of phosphorus <br />shall not be adiustedlunless the the soil phosphorus storage capacity index is greater than 40 mg/kg, in which case <br />the amount of phosphorus may be increased by 50 percent. <br />8. When considering the availability of nitrogen in biosolids, once the amount of plant available nitrogen to be <br />supplied by biosolids has been determined (i.e. the crop nitrogen demand has been adiusted to take other sources of <br />nitrogen into account), this amount may be multiplied by a factor of 1.5 (i.e. a 50 percent increase) to determine the <br />amount of total nitrogen that may supplied by biosolids <br />9. The calcium carbonate equivalency of any alkaline -treated biosolids and recommended lime application rates <br />for each application zone, <br />10. Septage application rates for application zones with a soil capacity greater than 0 mg/kg shall be no more <br />than 30,000 gallons per acre or no more than 40,000 gallons per acre per year for the septage not containing food <br />establishement sludge. Septage application rates for application zones with a soil phosphours storage capacity index <br />less than 0 mg/kg shall be no more than 12,000alg lons per acre per year. <br />11. The method of land application for each application zone; and, <br />12. The methodology and calculations used to determine the application rates for each application zone. <br />130 <br />