Avaliação de propriedades do solo, características morfológicas e componentes de rendimento da soja em relação ao relevo

Abstract

Soybean (Glycine max (L.) Merril) is an oleaginous plant that has accompanied humanity since the beginning, being one of the main grains cultivated on a large scale around the world. The Southwest of Paraná is located in the Third Plateau of Paraná. With the influence of the parent material, correlating with the climate and relief conditions, soils with high levels of clay and iron oxides and a strong variation in terms of topography were originated. The revealing of the properties also significantly impacts the productivity of the crop. In view of the above, the present work aims to evaluate the physical, chemical and morphological characteristics of a typical Dystrophic Regolitic Neosol and a Leptic Dystrophic Haplic Cambisol Tb, and their relationship with soybean productivity on a half-slope composed of different geomorphological features (concave, convex) developed from basalt, which are under no-tillage system during a soybean crop planting cycle. The data obtained in the granulometric analysis showed high levels of clay. In the chemical analysis from 0 to 5 cm and from 5 to 10 cm, expected values were found, finding aluminum at a depth of 5 to 10. Through the VESS analysis, it was possible to identify that the soil structure is not adequate, and the producer must make improvements. It is concluded that it was not possible to verify whether there was a difference in productivity by the slope found at the site.