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I Nitrogen collectEon calculations: C) Dry: Wet: Cattle In freestatls and flushed concrete lanes: Collected @ Corrals Flushed from Cow Lanes # 20% 80% Lactating cows @ 1,490 lbs.NIDay 298 lbs 1192 lbs Dry cows @ 0 lbs.NIDay 0 lbs 0 lbs Bred heifers @ 461 lbs.NIDay 92 lbs 369 lbs l Calves-1 yr.to bred @ 154 lbs.NIDay 31 lbs 123 lbs Calves-3 mos.to 1 yr.@ 221 lbs,NIDay 44 lbs 177 lbs Baby calves @ 44 lbs.NIDay 9 lbs 35 lbs Total Nitrogen collected per day: 474 lbs per day,Dry 1,895 lbs per day,Dry + Dry: Wet: Cattle In corrals and flushed feed lanes: Collected @ Corrals Flushed from Cow Lanes •' 40% 60% Lactating cows @ 0 lbs.NIDay 0 lbs 0 lbs t 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 !I Baby calves @ 0 lbs.NIDay 0 lbs 0 lbs Total Nitrogen collected per day: - lbs per day,Dry - lbs per day,Dry F Dry: Wet: .Cattle in corrals(Scraped): Collected @ Corrals 100% 'I Lactating cows @ 0 lbs.NIDay 0 lbs Dry cows @ 156 lbs. NIDay 156 lbs Bred heifers @ 0 lbs. NIDay 0 lbs Calves-1 yr.to bred @ 0 lbs.NIDay 0 lbs Calves-3 mos.to 1 yr.@ 0 Jbs.NIDay 0 lbs Baby calves @ 0 lbs.NIDay 0 lbs FTotai"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 1,895 379lbs.per day �Lbs of nitrogen reaching anaerobic lagoon ', 80°!° x 1,$95 1,516 lbs.per day Yearly nitrogen production: Total nitrogen in solids per year from corrals: 630 x 365 229,822 IbIN/Year Total nitrogen in solids per year in aerobic settling pond: 379 x365 138,338 IbINIYear ,Total nitrogen in liquids at anaerobic lagoon: 1,516 x365 553,353 VNIYear Nitrogen retention(losses)calculations from storage: f�Nitrogen retained from storage in dry lot corrals: 25-70% Use 25% I Nitrogen retained from storage in aerobic settling pond: 35-45% Use 40% Nitrogen retained from storage in anaerobic lagoons: 20-35% Use 25% i �Lbs of nitrogen per year available after losses in storage: Solids: N in solids from corrals: 229,822 x .25 57,455.55 IbINIYear" N in solids from aerobic setting pond: 138,338 x .40 55,335 Ib1NNear LLiquids: otal nitrogen in solids after losses: 112,791 Ib/N/Year N in liquids from anaerobic lagoon after losses: 553,353 x .25 138,338 Ib/N1Year [Total nitrogen after losses available to crops from both solids and liquids: 251,129 ibIN/Year itrogen requirements by the acres of farmed properties during the summer season and winter season l taking solids and liquids: r rop Acres N Requirement Corn silage(35T) A-60 s6 lbs.of nitrogen per crop 149,893 lbs.N � a Wheat silage- OQ 175l lbs.of nitrogen per crop: 104,925 lbs.N r_ FOlfalfa- 480 lbs.of nitrogen per crop: - lbs.N Nitrogen required at these fields 254,817 lbs.N r