Subject
nitrate
soil pollution
3
water pollution control
3
agriculture
2
denitrification
2
fertilization
2
fertilizer
2
manure
2
nitration
2
nitrification
2
plant growth
2
simulation
2
cattle
1
cultivated plant
1
drinking water contamination
1
ecosystem
1
erosion
1
forest decline
1
forestry
1
liquid manure
1
lysimeter
1
nitrogen
1
nitrogen cycle
1
nutrition
1
pesticide residue
1
plant breeding
1
slurry
1
soil protection
1
soil water
1
water pollution
1
water protection
1