Diagnóstico da fertilidade dos solos cultivados com arroz irrigado em Itaqui, RS

Abstract

Itaqui city is the second largest producer of rice in the state of Rio Grande do Sul. However, the yield obtained is inferior to many other counties producers. It is known that the soil has a very important role in crop yields, as this often meets the nutritional needs of plants. As a result, the aim of this work was to diagnose soil fertility of rice farmers Itaqui through the collection and analysis of soil fertility parameters. Reports were obtained from soil analysis of 2012/2013 harvest with the Instituto Rio Grandense do Arroz and the AGEFER Insumos Agrícolas, with a total of 427 reports. The results of these reports were framed in bands of interpretation suitable for rice cultivation in the state of Rio Grande do Sul. After the interpretation, the results were grouped and was made of the frequency distribution (percentage). A comparison was made of the soil chemical parameters in other regions of Rio Grande do Sul. Soil fertility Itaqui is a major factor in reducing the rice yield, and the soils are less fertile than the rest of the Rio Grande do Sul and Fronteira Oeste. The proper application of fertilizers in these areas, probably, will result in increased productivity.