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r I-JIMItrogen cotlectio'n ca@cullatoons: Dry: Wet: Cattle In freestalls and flushed concrete lanes: Collected @ Corrals Flushed from Cow Lanes � f 20% 80% Lactating cows @ 753 lbs.N10ay 151 lbs 602 lbs Dry cows @ 0 lbs.NIDay 0 lbs 0 lbs Bred heifers @ 233 lbs.NIDay 47 lbs 186 lbs ' Calves-1 yr.to bred @ 0 lbs.NIDay 0 lbs 0 lbs r Calves-3 mos.to 1 yr.-@ 112 lbs.NIDay 22 lbs 89 lbs Baby calves @ 22 lbs.NIDay 4 lbs 18 lbs I Total Nitrogen collected per day: 224 lbs per day,Dry 895 Jbs per day,Dry Dry: Wet: Cattle in corrals and flushed feed lanes: Collected @ Corrals f=lushed from Cow Lanes 40% 60% Lactating cows @ 0 lbs.NIDay 0 lbs 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 lbs 0 lbs Calves-3 mos.to 1 yr.@ 0 lbs.NIDay 0 lbs 0 lbs Baby calves @ 0 lbs.NIDay 0 lbs 0 lbs Total Nitrogen Collected per day: - lbs per day,Dry lbs per day,Dry Dry; Wet; ,Cattle In corrals(Scraped: Collected @ Corrals 100% Lactating cows @ 0 lbs.NIDay 0 lbs Drycows @ 79 lbs.NIDay 79 lbs k Bred heifers @ 0 lbs. NIDay 0 lbs Calves-1 yr,to bred @ 78 lbs.NIDay 78 lbs Calves-3 mos.to 1 yr.@ 0 lbs.NIDay 0 lbs Baby calves @ 0 lbs.NIDay 0 lbs FTotal. Nitrogen collected per day: 156 lbs per day,Dry Nitrogen flushed from concrete cow lanes will flow through settling ponds. Settling ponds typically collect 80%of the solids 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 895 179 lbs.per day ""'Lbs of nitrogen reaching anaerobic lagoon 80% x 825 716 lbs.per day Yearly nitrogen production: Total nitrogen in solids per year from corrals: 380 x365 138,776 IbINlYear Total nitrogen in solids per year in aerobic settling pond: 179 x365 65,366 Ib/NNear �.Jotal nitrogen in liquids at anaerobic lagoon: 716 x365 261,464 IbINNear Nitrogen retention(losses)calculations from storage: Nitrogen 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% abs of nitrogen per year available after losses in storage: Solids: .x .14 in solids from corrals: 138,776 x .25 34,694.12 IbINlYear N in solids from aerobic setting pond: 65,366 x .40 26,146 IbINlYear Total nitrogen in solids after losses; 60,841 IbINlYear Liquids: N in liquids from anaerobic lagoon after losses: 261,464 x .25 65,366 Ib/NNear FTiN otal nitrogen after losses available to crops from both solids and liquids: 126,207 bINear �arNitrogen requirements by the acres of farmed properties during the summer season and winter season SII taking solids and liquids: ,.rop Acres N Requirement Com silage(35T) 'x!;7.815-250..lbs.of nitrogen per crop 153,643 lbs.N I Wheat silage- ;j615"=- j75tlbs.of nitrogen per crop: 107,550 lbs.N i lfalfa `Q 480.lbs.of nitrogen per crop: - lbs.N Nitrogen required at these fields 269,192 lbs.N E i