1.
SAARELA I, HUHTA H, VIRKAJĂ„RVI P. Effects of repeated phosphorus fertilisation on field crops in Finland 2.Sufficient phosphorus application rates on silty and sandy soils. AFSci [Internet]. 2006Jan.4 [cited 2024Nov.22];15(4):423-4. Available from: https://journal.fi/afs/article/view/5853