Taivalmaa, Sanna-Liisa, and Heikki Talvitie. “The Effects of Ridging, Row-Spacing and Seeding Rate on Carrot Yield”. Agricultural and Food Science 6, no. 5-6 (December 1, 1997): 363–369. Accessed November 23, 2024. https://journal.fi/afs/article/view/72799.