Vidigal, Sanzio Mollica, Iza Paula de Carvalho Lopes, Mário Puiatti, Marcelo Resende de Freitas Ribeiro, e Maria Aparecida Nogueira Sediyama. 2018. “SPAD Index in the Diagnosis of Nitrogen Status in Cauliflower As a Function of Nitrogen Fertilization”. Científica 46 (3). Dracena, SP:307-14. https://doi.org/10.15361/1984-5529.2018v46n3p307-314.