Table 6 Mineral N levels in two sugarcane soils (sandy loam and clay) from Broadwater (NSW) after 60 days and following the application of OAs (Day 0) and urea ‡ (Day 30)
From: Greenhouse gas emissions from sub-tropical agricultural soils after addition of organic by-products
|  | Sandy loam§ | Clay§ | |||
|---|---|---|---|---|---|
Treatment | NH4+-N NO3--N | NH4+-N NO3--N | |||
|  | mg kg-1 soil | ||||
60% WFPS | UN | 82 ± 22 | 109 ± 12 | 81 ± 12 | 106 ± 13 |
MM | 45 ± 9 | 109 ± 18 | 78 ± 10 | 112 ± 41 | |
RB | 45 ± 1 | 155 ± 26 | 48 ± 8 | 141 ± 15 | |
MB | 39 ± 8 | 115 ± 4 | 87 ± 18 | 154 ± 9 | |
CM | 38 ± 7 | 99 ± 16 | 54 ± 10 | 164 ± 24 | |
HC | 47 ± 4 | 210 ± 4 | 78 ± 26 | 206 ± 39 | |
75% WFPS | UN | 86 ± 17 | 136 ± 15 | 93 ± 4 | 179 ± 3 |
MM | 67 ± 21 | 190 ± 40 | 99 ± 6 | 155 ± 6 | |
RB | 43 ± 14 | 151 ± 23 | 125 ± 32 | 239 ± 29 | |
MB | 47 ± 11 | 161 ± 22 | 89 ± 14 | 172 ± 7 | |
CM | 39 ± 9 | 137 ± 7 | 67 ± 14 | 188 ± 13 | |
HC | 56 ± 4 | 213 ± 24 | 87 ± 9 | 259 ± 5 | |
90% WFPS | UN | 39 ± 8 | 73 ± 22 | 91 ± 14 | 178 ± 28 |
MM | 25 ± 5 | 69 ± 18 | 94 ± 25 | 205 ± 26 | |
RB | 12 ± 4 | 135 ± 42 | 117 ± 14 | 227 ± 24 | |
MB | 17 ± 3 | 97 ± 22 | 99 ± 27 | 149 ± 17 | |
CM | 28 ± 5 | 67 ± 14 | 96 ± 20 | 230 ± 23 | |
HC | 26 ± 5 | 172 ± 20 | 78 ± 16 | 351 ± 52 | |