Table 4 The flow variation (%) that are critical for the N-P-K sign of the arable crops balance.
Cereals and potato | Legume crops | Fallow land | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
N | P | K | N | P | K | N | P | K | ||
Outputs | Harvests (Ho) | −37% | 381% | 11792% | 61% | 172% | 7045% | — | — | — |
Cropped or grazed straw (So) | −80% | 706% | 90% | 161% | 432% | 184% | — | — | — | |
Cropped or grazed weeds - crops (Wo) | −56% | 1045% | 92% | 69% | 233% | 120% | — | — | — | |
Cropped or grazed weeds - fallow (Go) | — | — | — | — | — | — | 2% | 65% | 1% | |
Leaching and runoff (Lo) | −95% | — | 260% | 395% | — | 340% | 23% | — | 7% | |
Erosion (Eo) | — | 689% | 383% | — | 790% | 500% | — | 764% | 7% | |
N emissions (Vo) | −50% | — | — | 62% | — | — | 6% | — | — | |
Inputs | Seeds (Si) | 387% | (−100%) | (−100%) | (−100%) | (−100%) | (−100%) | — | — | — |
Manure (Mi) | 86% | (−100%) | (−100%) | (−100%) | (−100%) | (−100%) | — | — | — | |
Field excretions (Ei) | 117% | (−100%) | (−100%) | (−100%) | (−100%) | (−100%) | −5% | −76% | −3% | |
Other biomass entries (Bi) | 503% | (−100%) | (−100%) | (−100%) | (−100%) | (−100%) | — | — | — | |
Chemical fertilizers (Fi) | 33% | −80% | (−100%) | (−100%) | (−100%) | (−100%) | — | — | — | |
Rainfall (Ri) | 116% | (−100%) | (−100%) | (−100%) | (−100%) | (−100%) | −8% | (−100%) | −6% | |
Irrigation (Ii) | 270% | (−100%) | (−100%) | (−100%) | (−100%) | (−100%) | — | — | — | |
Soil weathering (Wi) | — | (−100%) | −70% | — | (−100%) | −92% | — | −88% | −1% | |
Symbiotic N fixation - cultivated legumes (Li) | — | — | — | −36% | — | — | — | — | — | |
Symbiotic N fixation - wild legumes (LWi) | 174% | — | — | (−100%) | — | — | −5% | — | — | |
Non-symbiotic N fixation (Oi) | 234% | — | — | (−100%) | — | — | −9% | — | — | |
