Nitrogen and phosphorus gate balances on Finnish pilot dairy farms
Type de document
conferencePaper
Langue source
Anglais
Titre français
Titre anglais
Nitrogen and phosphorus gate balances on Finnish pilot dairy farms
Auteur(s)
- KAJAVA S.
- SAIRANEN A.
Editeur(s)
Autre(s)
Id
W8BS6YK4
Version
2785
Date ajout
15 janvier 2021 10:06
Date modification
15 janvier 2021 10:06
Résumé anglais
The aim of this work was to study nitrogen (N) and phosphorus (P) nutrient farmgate balances on 12
Finnish pilot dairy farms: 9 conventional farms (CF) and 3 organic farms (OF). The results were based
on yearly production balance: input N and P (purchased animals, fertilisers and feeds, and biological
N fixation) – output N and P (sold milk, meat, animal and crop products, and manure). Most N and
P imports to CF came from fertilisers and concentrates. The median N balance of CF was 118 kg ha‑1
and of OF 49 kg ha‑1 respectively. The N utilisation (output/input) of CF was 2% and of OF 32%. The
median P balance of CF was 9.5 kg ha‑1 and of OF 4.2 kg ha‑1. The P utilisation of CF was 46% and of
OF 49%. Farmgate balances were most affected by animal density and production intensity, and balances
would be lower in all dairy farms if nutrient cycling were more closed. The farmgate balance levels of
Finnish pilot farms were similar to other Nordic regions, yet balance was lower compared with some
other European countries. However, milk production per ha also remains quite low in Finland.
Note
None
CRAW tags
- AB - Modalité bio
- FREDO alimentation animale
- FREDO aspect technico-économique
- FREDO biologie et travail du sol
- FREDO fertilisation
- GEO Finlande
- azote
- bovin laitier
- comparaison
- dairy farming
- efficiency
- grassland
- nitrogen
- nutrient gate balance
- phosphorus
- resource
- élevage
WEB tags
Pages
807
Date caractères
10/2020
Date publication
1 octobre 2020