Effect of Different Levels of Nitrogen and Mulching on the Growth of Chinese Cabbage (Brassica campestris var. Pekinensis). Progressive Agriculture, [S. l.], v. 20, n. 1-2, p. 27–33, 2013. DOI: 10.3329/pa.v20i1-2.16845. Disponível em: https://www.banglajol.info/index.php/PA/article/view/16845. Acesso em: 28 jun. 2026.