Di Gioia F, Gonnella M, Buono V, Ayala O, Santamaria P. Agronomic, physiological and quality response of romaine and red oak-leaf lettuce to nitrogen input. Ital J Agronomy [Internet]. 2017 Mar. 6 [cited 2024 Apr. 23];12(1). Available from: https://www.agronomy.it/agro/article/view/806