Alaru, Maarika, Liina Talgre, Viacheslav Eremeev, Berit Tein, Anne Luik, Anu Nemvalts, and Evelin Loit. “Crop Yields and Supply of Nitrogen Compared in Conventional and Organic Farming Systems”. Agricultural and Food Science 23, no. 4 (December 8, 2014): 317–326. Accessed November 24, 2024. https://journal.fi/afs/article/view/46422.