Papers

Summary

The cost of sampling for spatial variability characterization of soil chemical and physical attributes is a fundamental problem in precision agriculture. The objective of this work was to use the landscape form as an auxiliary criterion for sampling optimization in an Oxisol under sugarcane cultivation, aiming at the estimation of their chemical and physical attributes. Soil samples were collected in the depths of 0.0-0.2m in the intersections of a 10m regular interval grid, comprising a total of 100 points. All chemical and physical attributes had more than 84% of the points plotted in the concave and convex landforms compared to the linear landform. Larger spatial variability in the soil of chemical and physical attributes was observed in the concave landform than in the linear one according to analysis performed with the program Sanos 0.1. SOUZA, Zigomar Menezes de; MARQUES JUNIOR, José; PEREIRA, Gener Tadeu and MONTANARI, Rafael. Otimização amostral de atributos de latossolos considerando aspectos solo-relevo.