DUA, V K.; GOVINDAKRISHNAN, P M; LAL, S. S. EFFECT OF FYM AND N LEVELS ON SPINACH YIELD, N-USE EFFICIENCY AND SOIL FERTILITY IN POTATO- SPINACH SEQUENCE. Potato Journal, Himachal Pradesh, India, v. 37, n. 3 - 4, 2013. Disponível em: https://epubs.icar.org.in/index.php/PotatoJ/article/view/32631. Acesso em: 24 jun. 2026.