Effect of Farming Systems on the Spatial Variability of Soil Physical Properties and Soybean Yield

Ligia Maria Lucas Videira, Paulo Ricardo Teodoro Silva, Diego dos Santos Pereira, Rafael Montanari, Alan Rodrigo Panosso and Christtiane Fernandes Oliveira

Journal of Agricultural Science, 2024, vol. 11, issue 15, 87

Abstract: In no-tillage (NT) and minimum tillage (MT) areas, spatial variability of soil physical properties may affect crop yield. The aim of this study was to assess the spatial distribution of soil physical properties, as well as the yield components and grain yield of soybean (GY), based on the mapping of areas under soil conservation farming systems. We assessed yield components, GY and the physical properties of an Oxisol, under NT and MT using the t-student test, and geostatistics to assess spatial variability. The largest population of NT plants showed no spatial dependence and did not influence GY, but the components related to plant height and soil properties differed between systems. From a spatial standpoint, the kriging maps demonstrated that mass of one thousand grains (MOG), total porosity (TP) and soil bulk density (BD) influenced GY under NT, whereas TP1 exerted the most influence under high soil moisture conditions and MT. The maps make it possible to assess the spatial distribution of soil physical properties and the influence on GY, making them an important tool for more accurate production planning in soil conservation systems.

Date: 2024
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