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f�Nitroqen colfeo#ion calcuiatIons: Dy Wet- FJ Ca ttW In freestalls and flushed concrete lanes: Collected @ Corrals Flushed from Cow Lanes 200% 80°id` r- ; Lactating cows @ 1,027 lbs.N/Day 205,lbs 822 lhs Dry cows @: 0 lbs;NIDay. 0 Ips 0 Ibs' Bred heifers @ 318 lbs NIDay 64 lbs+r,. 254 lbs € Calves 1yr f0 bred.@: 106 lbs iVlDay 21 lbs: 85 Ibs f Calves-3 mos•.to I-yr.@., 153 lbs. N/Day 31 Ibs:; ' 122;Ibs, Baby calves.@: 30 lbs.N/Day l3 lbs 24 Ibs. h F notal Nitrogen collected per day: 327 Ibs,per day,Dry 1,307Ibs'perday,Dry i Dry: Wet: Cattle In corrals and flushed feed lanes: Collected @ Corrals Flushed from Cow Lanes 40%. 60% Lactating cows @ 0 lbs. NIDay 0 Itis 0 lbs Dry cows @ 0 lbs.NIDay 0 lbs 0 lbs Bred heifers @ 0 lbs.NIDay 0 lbs 0 lbs Calves-1 yr.to bred @ 0 lbs. NIDay 0 Itis 0 Ib$ Calves-3 mos.to 1 yr.@ 0 lbs.NIDay 0 lbs 0 lbs i, Baby calves @ 0 Ibs, NIDay 0 Itis 0 lbs Total Nitrogen collected per day: - Ibs'per day,Dry lbs per day,Dry Dry: Wet: F�Cattle in corrals(Scraped): Collected @ Corrals 100% Lactating cows @ 0 lbs.NIDay 0 fbs Dry cows @ 107 lbs.NIDay 107 lbs Bred heifers @ 0 lbs.NIDay 0 lbs ` Calves-1 yr.to bred @ 0 lbs.NIDay 0 Itis Calves-3 mos.to 1 yr.@ 0 lbs.NIDay 0 lbs t Baby calves @ 0 lbs.NIDay 0 lbs Total Nitrogen collected per day: 107 tbs per day,Dry Nitrogen flushed from-concrete cow lanes wifl flbW-through settling:ponds. settling ponds typically collect SU%04the solyds prior to reaching the lagoon.: Settling ponds retain approximately 20%of the nitrogen prior to reaching the lagoon. Lbs of flushed nitrogen collected in settling pond 20% x 1,307 261 lbs.per day —Lbs of nitrogen reaching anaerobic lagoon Yearly nitrogen pradu'cton: 80% ' x 1,307 1,045� lbs.per.day - -. _ . Total nitrogen in solids per.ye.ar from corrals: 434 x 365 158 456 IbINlYear Total nitrogen in solyds per year in aerobic settling pond: 261 x365 95,381 lb/NrYear Total nitrogen in liquids' at anaerobic lagoon: 1,045 x365 381,523 Ib/NlYear' Nitrogen retention(losses)calculations from storage: rtrogen retained from storage in dry lot corrals: 25-70% Use 25% Nitrogen retained from storage in aerobic settling pond: 35-45% Use 40% Nitrogen retained from storage in anaerobic lagoons: 20-35% Use 25% bs of nitrogen per year available after losses in storage:. solyds: „N in solids from corrals: 158,456 x .25 39,614.09 lb/N/Year N in solids from aerobic setting pond: 95,381 x .40 38,152 IbINlYear Total nitrogen in solids after losses: 77,766 Ib/NlYear Liquids: N in liquids from anaerobic lagoon after losses: 381,523 x .25 95,389 lb/NNear Total nitrogen after losses available to crops from both solids and liquids: 173,147 IbINlYear Nitrogen requirements by-the acres of farmeproper d ties during the summer season and winter season all taking solids and liquids: Crop•,� Acres°N f�equirement Corn sglage{35� 164'.'65f,nitrogeh:percrop 151,893 lbs. N Wheat silage Ibs.of nitrogen per crop: 106,325 lbs.N Alfalfa- '( itis,of nitrogen per crop: lbs N Nitrogen required at these fields 258,217 lbs.N IJ - I