Open Access
Table 1.
The yield of potato depending on the fertilizer doses and the planting density, 2012–2015.
| The amount of fertilizer | Planting density, thousand tubers/hectare | Yield, tons per hectare | ± from the amount of nutrition | ± from the planting density | ||||
|---|---|---|---|---|---|---|---|---|
| 2012 | 2013 | 2014 | 2015 | average | ||||
| Without fertilizer | 55.5 | 19.62 | 16.60 | 15.52 | 17.05 | 17.20 | – | – |
| 60.6 | 22.50 | 18.32 | 16.44 | 19.04 | 19.08 | – | + 1.88 | |
| 66.6 | 22.83 | 19.71 | 18.10 | 20.23 | 20.22 | – | + 3.02 | |
| Calculation for 30 t/hectare | 55.5 | 29.51 | 26.81 | 23.48 | 29.65 | 25.37 | 8.17 | - |
| 60.6 | 31.22 | 28.58 | 26.10 | 32.45 | 29.59 | 10.51 | + 4.22 | |
| 66.6 | 31.80 | 30.42 | 28.84 | 33.65 | 31.18 | 10.96 | + 5.81 | |
| Calculation for 35 t/hectare | 55.5 | 35.63 | 33.47 | 31.64 | 34.87 | 33.90 | 16.70 | – |
| 60.6 | 37.91 | 34.81 | 32.85 | 36.48 | 35.52 | 16.44 | + 1.62 | |
| 66.6 | 38.30 | 36.10 | 34.10 | 37.56 | 36.52 | 16.30 | + 2.62 | |
| Calculation for 40 t/hectare | 55.5 | 39.94 | 38.06 | 36.41 | 38.65 | 38.27 | 21.07 | – |
| 60.6 | 41.32 | 40.34 | 37.95 | 39.87 | 39.87 | 20.79 | + 1.60 | |
| 66.6 | 41.50 | 42.10 | 38.75 | 42.33 | 41.17 | 20.95 | + 2.90 | |
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