Open AccessResults of tests made with placement fertilization on the Kotkaniemi experimental farm
Author(s) -
Yrjö Pessi,
Mikko Ylänen,
Auvo Leskelä,
Jorma Syvälahti
Publication year - 1970
Publication title -
agricultural and food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.347
H-Index - 35
eISSN - 1795-1895
pISSN - 1459-6067
DOI - 10.23986/afsci.71770
Subject(s) - fertilizer , yield (engineering) , agronomy , human fertilization , mathematics , nutrient , crop , nitrogen , soil water , nitrogen fertilizer , urea , soil nutrients , environmental science , biology , chemistry , soil science , materials science , ecology , biochemistry , organic chemistry , metallurgy
On the basis of the results of the tests made on clay soils and on soils containing clay the following conclusions can be drawn: Among different nutrients the placement of nitrogen proved to be the most important. Placement of nutrients in rows at a depth of about 8—10 cm gave considerable increases in crop yield compared with ordinary broadcasting. In the two tests where fertilizer and seed were sown in the same row, the crop yield was of the same size as in the case where they were sown separately. Ripening was delayed, however. When fertilizer and seed were sown with separate machines and the fertilizer was placed closer than 10 cm to the seed, urea did not prove as good as nitrochalk.