Avaliação de diferentes práticas de manejo sob cultivo orgânico de hortaliças na densidade do solo em Seropédica (RJ): qualidade física do solo na produção orgânica de hortaliça

Abstract

Conservation management techniques promote the recovery of the productive potential of the soil and enable the sustainable management of this natural resource. These techniques are also practiced and approached in organic production systems. It is believed that the system of no-tillage cultivation, by maintaining the vegetation cover and reducing the soil rotation, is adequate to be inserted in organic agriculture. The present study aimed to evaluate the effect of different management practices under organic crop cultivation on soil density in Seropédica (RJ). The experiment was installed in the agricultural year of 2014/2015 in an experimental area belonging to the Agroecological Integrated Production System - SIPA, at Fazendinha Agroecológica Km 47, in Seropédica (RJ). The experimental design was a randomized block design with four replicates. Three soil management systems under organic production were evaluated: a) no-tillage, no herbicide use and with the use of a waste disposer (Triton); b) conventional management system with the use of the rotary hoe; and c) conventional management system with the use of a plowing and two harrows. The results showed that there was no statistical difference in the values ​​of soil density between the management systems evaluated. Soil management systems acted homogeneously in soil compaction. Soil density values ​​have been high and the use of cover crops can reduce soil density in the long term.