TY - GEN TY - GEN T1 - Developmental stages of the apex used as a basis for supplemental nitrogen application in spring wheat production T2 - Publication / University of Helsinki, Department of Plant Production, Section of Crop Husbandry T2 - Publication / University of Helsinki, Department of Plant Production, Section of Crop Husbandry T2 - Kasvinviljelytieteen julkaisuja A1 - Peltonen, Jari, 1962-2011 LA - eng PP - Helsinki PB - University of Helsinki YR - 1992 UL - https://kansalliskirjasto.finna.fi/Record/fikka.3529953 NO - Artikkeliväitöskirjan yhteenveto-osa ja 4 eripainosta. SN - 951-45-6260-7 nidottu KW - vehnä KW - lannoitus KW - typpilannoitteet KW - kevätviljat ER -