1. Regional Gross Nutrient Balances 2000-2005 Hungary RISSAC HCSO

2. Calculating GNB Each of the 7 regions of Hungary According to OECD methodology HCSO agricultural databases (regional data), RISSAC coefficients (country level) No regional coefficients Annual and cumulated balances

3. I. Input 1.Fertilization - inorganic - organic 2. Sewage sludge (3kg/t N, 3 kg/t P 2 O 5 ) 3. NP intake with seeds 4. Nitrogen fixation (leguminous plants, free living organisms) 5. Wet and dry deposition

4. Composition of N input in 2005

5. Composition of P input in 2005

6. I.1. Fertilization Inorganic - enterprises: quantity of active ingredients (NPK) known - private holdings: quantity of active ingredients only in 2002 was known - Quantity of mineral NP per hectare

7. I.1. Fertilization Organic - Data on total amount is collected, without NP content previous years livestock number

8. LU/100 ha

9. Coefficients calculating manure NP content Species Quantity of produced nutrient kg/head/year NP2O5P2O5 Cattle6030 Horse6030 Buffalo6030 Donkey2512,5 Mule2512,5 Pig105 Sheep94,5 Goat147 Poultry0,40,2

10. I.3. NP intake with seeds = Quantity of agronomical required propagating material X NP content

11. I.4. Nitrogen fixation Leguminous plants Free living soil organisms kg/ha Pulses40 Soybeans20 Clover50 Alfalfa60 Arable Land4 Permanent Crops4 Permanent pasture4

12. I.5. Wet and dry deposition measured in 4 locations in Hungary average at country level, no regional coefficients 2000-2002: 18 kg N/ha 2003-2005: 14 kg N/ha

13. II. Output Ratio of main- and by products; Handling of by-products - 70% of cereal straw is removed from the field - 0% of corn and sunflower stalk is removed Nutrient level of the soil Highest yield in 2001, 2004 and 2005 wheat:1,1 barley: 1,2 maize: 1,1 millet: 1,2 oat: 1,3 sorghum: 1,2 rice: 1,0 soy: 1,5 sunflower: 2,0 rape: 1,4 rye: 1,8 bean: 1,8 pea: 1,8 potato 0,1 sugar beet 0,1 hemp for fibre 3,0 fodder beet 0,1 tobbaco 1,0

14. III. Balances Region200020012002200320042005 Central Hungary442949523026 Central Transdanubia614452642815 Western Transdanubia484145441417 Southern Transdanubia543034501911 Northern Hungary3519403679 Northern Great Plain432448471320 Southern Great Plain392045521311 Hungary452845491615 Regional N balances, kg/ha between 2000 and 2005

15. III. Balances Regional P balance kg/ha between 2000 and 2005 Region200020012002200320042005 Central Hungary-2-437-2-3 Central Transdanubia0-309-5-10 Western Transdanubia-3-21-10 Southern Transdanubia-6-11-92-11-15 Northern Hungary-2-701-10-9 Northern Great Plain-2-814-9-7 Southern Great Plain-3-906 -10 Hungary-3-74-9

16. IV.Problems Application rate of inorganic NP on different crops - within the advisory scheme - minimal respond No data on bought feedingstuff - surface balance No data on urban compost - negligible

17. Summary Balances were mostly determined by output Balances alone are not sufficient to evaluate environmental effects of agriculture - soil supply status - groundwater nitrate content Losses during storage of mineral fertilizers, and aging of manure (~10-20%) Manure appliation (only 80% of the total quantity) Losses in the process of wet and dry deposition (~20%) N content of manure can not be utilized by 100% by crops (~50-70%)

18. Thank you for your attention!