Improving Yield and Quality of Processing Potato Crops Grown in the Argentinian Pampas: the Role of N, P and S and Their Impact on CO 2 Emissions D. O. Caldiz 1 & P. G. Viani 2 & C. M. Giletto 2 & E. C. Zamuner 2 & H. E. Echeverría 2 Received: 12 January 2016 /Accepted: 7 February 2018 # European Association for Potato Research 2018 Abstract The area grown with processing potato crops in the Argentinian Pampas has been increasing steadily since 1995. The aim of this work was to assess the effects of N, P and S upon yield and tuber quality and their impact on CO 2 emissions assessed with the Cool Farm Tool-Potato. During the spring-summer growing seasons 2008/2009 and 2009/2010, ten fertilization experiments to individually assess N, P and S effects were carried out in the southeast region of the Argentinian Pampas. Nitrogen (four N rates), phosphorus (four P rates) and sulfur (three S rates) were applied at planting and tuber initiation; at combined rates of 0, 50, 100 and 150 kg N ha -1 , and at rates of 0, 25, 50 and 100 kg P ha -1 and 0, 10 and 20 kg S ha -1 . N and P had a positive effect on total tuber yield, but tuber dry matter concentration (DMC) decreased at higher N rates. The fraction of marketable tubers suitable for processing into French fries increased with the addition of N, showed no variations with P fertilization, and decreased when S was Potato Research https://doi.org/10.1007/s11540-018-9364-5 * D. O. Caldiz dcaldiz@mccain.com.ar P. G. Viani gastonviani@hotmail.com C. M. Giletto giletto.claudia@inta.gob.ar E. C. Zamuner zamuner.ester@inta.gob.ar H. E. Echeverría echeverria.hernan@inta.gob.ar 1 Global Agronomy R&D, McCain Foods Limited, Colectora Panamericana 1804, B1607AB San Isidro, Argentina 2 Unidad Integrada FCA UNMdP-INTA Balcarce, CC 276, B7620EMA Balcarce, Argentina