Time adjustment of forest fertilization relative to that of thinning. Preliminary results from a nine year old Scandinavian co-operative study

aclareo age ammonitrate ammonium nitrate calcium ammonium nitrate crecimiento croissance date de traitement edad fecha de tratamiento fertilisation fertilizer application feuille finland finlande finlandia growth hojas leaves nitrate d'ammonium nitrato de amonio noruega norway picea abies pinus sylvestris thinning treatment date volume volumen