agronomy Article Sustainability Performance through Technology Adoption: A Case Study of Land Leveling in a Paddy Field Juan Quirós-Vargas 1,2,* , Thiago Libório Romanelli 2 , Uwe Rascher 1 and José Agüero 3 1 Institute of Biogeosciences, IBG2, Plant Sciences, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany;
[email protected] 2 Department of Biosystems Engineering, University of São Paulo (USP/ESALQ), Piracicaba-SP 13418-900, Brazil;
[email protected] 3 AgriCien, San José 10107, Costa Rica;
[email protected] * Correspondence:
[email protected]; Tel.: +49-017-0417-2268 Received: 2 October 2020; Accepted: 27 October 2020; Published: 29 October 2020 Abstract: Energy is required in all agricultural activities. Diagramming material flows needed by crop production systems supports the proper analysis of energy flows interactions within a system’s boundaries. The latter complemented with an economic analysis gives a clear view of how beneficial a new practice within a crop cycle is—in this case, the variable slope (VS) land leveling (LL) operation. VS is a global navigation satellite system (GNSS, with real time kinematics—RTK—accuracy) LL technique used to create a smooth continuous surface with a constant slope, by cutting and filling topsoil layers only in those points presenting “anomalies” of micro-relief which make the movement of water difficult. This operation is important for paddy production since: (i) it enables to crop during dry seasons by harnessing the water of rivers and wells, and (ii) improves the production during rainy seasons, by allowing the farmer to manage the drainage timely and homogeneously. The present study aims to analyze, from the energy perspective, the effects of the VS leveling implementation in a paddy field (located in the Costa Rican Pacific), throughout input (labor, gas oil, etc.) and output (yield and price) data of five consecutive years (2011–2015).