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. 2020 Mar 27;8:e8899. doi: 10.7717/peerj.8899

Table 8. Number of fields and their total area with specified natural fertilization.

Application time and type of manure (basic leaching modification) Number of fields Total area (ha)
No manure application (0%) 182 636.14
Spring—solid manure and slurry (+10%) 63 176.11
Autumn—solid manure (+15%) 43 131.49
Autumn—slurry (+30%) 3 13.00