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Table 2.
The value of the possible NPK substitution and economic efficiency of the use of biological products for cultivation of perennial grasses
| Factor A (types of grasses) | Factor B (fertilizers and biological products) | NPK substitutio n value | Cost reduction for NPK application, RUB/ha | Cost of biological productss, rubles/ha | Cost saving, rubles/ha | |
|---|---|---|---|---|---|---|
| % | kg/ha | |||||
| Ryagrass multi-beetle (control) | Control (without fertilizers) | – | – | – | – | – |
| N88P35K43 (30 t/ha green masses) | – | – | – | – | – | |
| Azotovite 2 kg/t seeds + Flavobacterine 4 l/ha | 53 | 88 | 3520 | 1643 | 1877 | |
| Albite 40 g/t seeds + Flavobacterine 4 l/ha | 34 | 56 | 2240 | 1302 | 938 | |
| Rizogrine 3 kg/t seeds + Flavobacterine 4 l/ha | 30 | 50 | 2000 | 1445 | 555 | |
| Ryegrass 60% + boneless rump 40% | Control (without fertilizers) | – | – | – | – | – |
| N88P35K43 (30 t/ha green masses) | – | – | – | – | – | |
| Azotovite 2 kg/t seeds + Flavobacterine 4 l/ha | 48 | 80 | 3200 | 1643 | 1557 | |
| Albite 40 g/t seeds + Flavobacterine 4 l/ha | 20 | 33 | 1320 | 1302 | 18 | |
| Rizogrine 3 kg/t seeds + Flavobacterine 4 l/ha | 23 | 38 | 1520 | 1445 | 75 | |
| yegrass 60% + meadow fescue 40% | Control (without fertilizers) | – | – | – | – | – |
| N88P35K43 (30 t/ha green masses) | – | – | – | – | – | |
| Azotovite 2 kg/t seeds + Flavobacterine 4 l/ha | 51 | 85 | 3400 | 1643 | 1757 | |
| Albite 40 g/t seeds + Flavobacterine 4 l/ha | 20 | 33 | 1320 | 1302 | 18 | |
| Rizogrine 3 kg/t seeds + Flavobacterine 4 l/ha | 24 | 37 | 1480 | 1445 | 35 | |
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