Avaliação da qualidade fisiológica de sementes salvas de trigo no Município de Salvador das Missões

Abstract

Wheat is the second most-produced cereal in the world. Thus, seek for increased productivity is constant by farmers. In this sense, use of high seeds physiological quality is a key attribute for successful establishment of the culture in the field. A very common practice in the northwest region of Rio Grande do Sul State, Brazil, and still widely used by farmers is the technique to save wheat seed; and the same is guaranteed by law. However, the seeds quality is unknown in many cases and can cause problems in crop establishment phase. In this context, it is aimed to with this job, to know the saved seeds quality by wheat farmers in the city of Salvador das Missões, RS, Brazil. The seeds sample collection occurred in pre- established properties in accordance with community knowledge; and in each sample were collected 0.5 kg. After collection, the samples were taken to the seed laboratory of the Universidade Federal da FronteiraSul, campus Cerro Largo, where was carried out qualitative analysis. In this sense, were carried out tests of germination, force, thousand seeds mass, moisture content and volumetric seed weight. Considering the results as a whole, 29% of the seeds lots studied were below the reference values in germination and about 90% had force lower than recommended, which shows the lots precariousness.