For citations:

Valkama E., Rankinen K., Virkajärvi P., Salo T., Kapuinen P., Turtola E. Nitrogen Fertilization of Grass Leys: Yield Production and Risk of Nitrogen Leaching. Agricultural Machinery and Technologies. 2019;13(2):31-39. https://doi.org/10.22314/2073-7599-2018-13-2-31-39