APLICAÇÃO DE DOSES ELEVADAS DE CALCÁRIO NA DISPONIBILIDADE DE NUTRIENTES E NO DESENVOLVIMENTO DE PLANTAS

Abstract

Brazilian soils have a natural characteristic of low pH levels, which results in a lower availability of nutrients for several crops, combined with high levels of exchangeable aluminum, which is a risk factor for plants because it is toxic, affecting mainly the development of the root system. To correct these problems, it is necessary to carry out the application of lime in particular doses for each area, however, there are situations in which these amounts exceed the real need for the soil, which may result in problems in the production system. Therefore, the objective was to evaluate through the review literature, the effects of applying lime doses in quantities above the recommendations, analyzing the influence on the nutrients of the soil-plant system in different management situations. After evaluating the works presented, it was possible to observe little influence in relation to decreases in nutrient content both in leaf tissue of the plants and in the soil, since they still remained at adequate levels even with the use of doses above that recommended by the base saturation method. this effect in the contents depends on the concentration of the nutrient in the soil and the pH resulting after the dose of limestone used. However, the productivity gains observed were not as expressive, with the need for a better understanding of the effectiveness of these dosages.