Atributos químicos de latossolo e sua relação com a produtividade do feijoeiro (Phaseolus vulgaris(L.))

Abstract

The present work aimed to characterize and correlate spatial variability of soil chemical attributes and bean crop productivity in a 10 ha commercial crop, managed for more than twenty years under no - tillage system, in an oxisol in the city of Cruz Alta , RS. The work has an NDVI map with data obtained in two distinct harvests in the years 2016/17 and 2017/18 for the definition of zones of homogenous management. Soil collections were carried out for the chemical quantification of the fertility of the study area and after the follow - up of the crop, plots were collected to define the real productivity of the area. Statistical and geostatistical analyzes were performed in order to evaluate the spatial variability of soil chemical attributes and correlated with productivity. Thus, it was possible to observe the spatial dependence of productivity for each chemical attribute analyzed. Bean productivity showed significant spatial variability and is strongly correlated with potassium (K), and it is possible to state that with the increase of potassium fertilization we can increase the grain yield of the bean in the study area.