Table 1. Total Kjeldahl nitrogen (TKN), ammonium (NH4-N), nitrite and nitrate (NO2− and NO3−) from manure-bedding mix from steer barn (S), dairy cow barn (DC), and composting lot (CL)
DOY | TKN (mg/L) | NH4-N (mg/L) | NO2− and NO3− (mg/L) |
S | DC | CL | S | DC | CL | S | DC | CL |
270 | - | - | - | - | - | - | - | - | - |
316 | 7,513.2 ± 1,310.9 | 7,096.9 ± 814.5 | - | 103.3 ± 101.1 | 227.3 ± 67.7 | - | 88.6 ± 80.3 | 23.7 ± 31.7 | - |
351 | 4,911.2 ± 350.4 | 7,772.2 ± 1,451.5 | - | 588.8 ± 60.7 | 589.5 ± 342.6 | - | 12.3 ± 1.3 | 42.5 ± 66.1 | - |
23 | - | BM | - | - | BM | - | - | BM | - |
27 | BM | - | - | BM | - | - | BM | - | - |
28 | 4,660.3 ± 379.4 | 8,829.1 ± 1,558.7 | - | 669.5 ± 47.4 | 764 ± 203.1 | - | 2.8 ± 0.9 | 17.5 ± 47.8 | - |
42 | - | BM | - | - | BM | - | - | BM | - |
111 | BM | - | - | BM | - | - | BM | - | - |
112 | 8,772.7 ± 1,292.3 | 13,098.1 ± 2,162.1 | - | 553.1 ± 83.7 | 388.1 ± 136.4 | - | 5 ± 1.3 | 298.6 ± 261.3 | |
142 | BR | BR | 10,097.2 ± 1,830 | BR | BR | 506.2 ± 216.3 | BR | BR | 9 ± 13 |
182 | 10,126.4 ± 2,703.6 | 11,634.4 ± 2,472.3 | - | 260.5 ± 133.5 | 672.3 ± 171.2 | - | 21.7 ± 36.4 | 7.3 ± 1 | - |
241 | 11,280.9 ± 3,668.6 | 13,769.2 ± 2,178.6 | - | 240.3 ± 119.7 | 385.7 ± 80 | - | 34.3 ± 40.3 | 7.6 ± 0.9 | - |
273 | 9,928.7 ± 1,678.4 | 14,226.6 ± 3,450 | - | 132.2 ± 83.3 | 342.5 ± 168.2 | - | 38 ± 14.1 | 38 ± 14.6 | - |
297 | - | - | 2,296.1 ± 1,946.1 | - | - | 435.8 ± 543 | - | - | 104.1 ± 193.1 |
301 | 9,393 ± 818.3 | 14,799.6 ± 3,666.8 | - | 320.6 ± 120.2 | 455.6 ± 123.3 | - | 2.9 ± 1.8 | 17.5 ± 45.2 | - |
DOY, day of year; BM, bedding mixing; BR, bedding replacement.