Pino, Paulina Lorena, Rodrigo Callejas, Bruno Razeto, and Gabino Reginato. 2012. “Petiole Extract Chemical Analysis to Evaluate Nutritional Status in Grapevine”. Pesquisa Agropecuaria Brasileira 47 (1):111-17. https://doi.org/10.1590/S1678-3921.pab2012.v47.10452.