Coelho, Fabrício Silva, Paulo Cezar Rezende Fontes, Fernando Luiz Finger, and Paulo Roberto Cecon. “Evaluation of Potato Nitrogen Status Based on Polyphenol and Chlorophyll Leaf Content”. Pesquisa Agropecuaria Brasileira 47, no. 4 (May 23, 2012): 584–592. Accessed November 14, 2025. https://apct.sede.embrapa.br/pab/article/view/11925.