Qualidade de sementes de soja produzidas na região sudoeste do Paraná na safra 2015/16

Abstract

The production of quality soybean seeds is of paramount importance for the sustainability of the agricultural sector. In some crops, many producers choose to save seeds with a view to reducing costs with commercial seed procurement. However, there is often no real guarantee of the product at the time of sowing, and this makes the producer vulnerable to the subsequent harvest. The aim of this work was to evaluate the physical and physiological quality of soybean seeds, salves and commercial, produced in the southwestern region of Paraná, in the 2015/2016 harvest. Six seed lots of the cultivars BMX ELITE IPRO were collected, being three lots from companies that own RENASEM and three seed lots saved. After being collected, the seeds were submitted to the UTFPR seed laboratory, Câmpus Dois Vizinhos / PR, and were submitted to the following tests: mechanical damage, first germination count, germination, accelerated aging, seedling length and dry matter. Data were submitted to analysis of variance and compared by the Scott Knott test, at 5% probability. In general, the lots of commercial provenance stood out positively in relation to the seed lots saved, in the majority of the tests carried out in the present study, indicating that commercial seeds confer greater quality guarantee in detriment to the seeds saved.