Souza, Filipe Bittencourt Machado de, Rafael Pio, Viviane Amaral Toledo Coelho, Cleber Lázaro Rodas, and Inêz Pereira da Silva. 2015. “Visual Symptoms of Micronutrients, Boron and Iron Deficiency and Mineral Composition of Blackberry Tree”. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics] 45 (2): 241-48. https://doi.org/10.5216/pat.v45i2.33906.