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Table 2.
The effect and aftereffect of various forms and norms of organic fertilizers on the content of nutrients in comparison with the effect of mineral fertilizers and the natural background, mg/kg of soil (Weighted average chronological indicators for the phases of growth and development of crops in 0–20 cm soil layer)
| Norms and types of fertilizers | Spring wheat (effect, 2016) | Corn (1st year of aftereffect, 2017) | Spring wheat (2nd year of aftereffect, 2018) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| N g | P2O5 | K2O | Ng | P2O5 | K2O | N g | P2O5 | K2O | |
| Without fertilizers – control (natural background) | 79.7 | 190.8 | 97.5 | 57.0 | 217.0 | 82 | 85.4 | 172 | 83.0 |
| NPK of mineral fertilizers to obtain 4 t/ha of grain and 40 t/ha of corn green mass | 94.3 | 275.0 | 173.3 | 77.3 | 255.8 | 181 | 88.2 | 246 | 159.5 |
| GCM 1,0 t/ha | 138 | 323.0 | 194.3 | 81.3 | 279.0 | 128 | 96.6 | 241 | 135.5 |
| GCM 2,0 t/ha | 144.3 | 343.3 | 234 | 85.8 | 302.3 | 152 | 104.0 | 260 | 186.0 |
| GCM 3,0 t/ha | 169 | 365.0 | 280.8 | 90.3 | 330.0 | 222 | 123.0 | 330 | 293.5 |
| Straw-based manure 42 t/ha (in the composition of 3 t/ha GCM) | 95.7 | 295.8 | 162.3 | 75.3 | 257.0 | 115 | 127.0 | 390 | 190.0 |
| Buckwheat green manure 27 t/ha | 94.9 | 300.4 | 198.7 | 71.5 | 263.0 | 150 | 92.8 | 270.6 | 180.1 |
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