| Summary: | Orientador: Carlos Gilberto Raetano === Banca: José Otávio Machado Menten === Banca: João Nakagawa === Resumo: O tratamento de sementes se caracteriza por ser um processo capaz de erradicar e/ou prevenir patógenos e pragas que podem causar prejuízos às sementes. O método de tratamento de sementes pode influenciar no desprendimento de poeira, desempenho na plantabilidade, além de ocasionar diminuição da dose por semente quando realizado de maneira não uniforme. Portanto, este trabalho teve como objetivo avaliar o efeito do tratamento fitossanitário de sementes de soja pelos métodos on farm e industrial (TIS) sobre abrasão, geração de poeira, fluidez e plantabilidade, a fim de obter melhor qualidade do produto final e a otimização deste processo. Para as avaliações, o estudo contou com cinco tratamentos: on farm - fungicida + inseticida + água; TIS - fungicida + inseticida + polímero; TIS - fungicida + inseticida + polímero + pó secante; TIS - fungicida + inseticida + polímero + pó secante + fertilizante mineral; testemunha (sem tratamento). O delineamento experimental foi inteiramente casualizado para todos os testes. Para o tratamento on farm utilizou-se betoneira com acionamento elétrico, tratando 10 kg de sementes. No TIS foi utilizada máquina de tratamento de sementes por batelada, equipada com disco de atomização rotativo. A poeira foi determinada pelo teste dust-off e os tratamentos distribuídos no esquema fatorial 5 x 4, cinco tratamentos de sementes e quatro intervalos de tempo (2; 32; 62 e 92 dias após tratamento), com quatro repetições. O teste de abrasão foi conduzido em fri... (Resumo completo, clicar acesso eletrônico abaixo) === Abstract: The seed treatment is characterized by being a process capable of eradicating and / or preventing pathogens and pests that can damage the seeds. Seed treatment method can influence the release of dust, performance in planting, and cause seed dose reduction when performed in an uneven manner. The objective of this study was to evaluate the effect of soybean seeds phytosanitary treatment by on farm and industrial methods (IST) on abrasion, dust generation, flowability and plantability, in order to obtain better final product quality and optimization of this product process. For the evaluations, the study had five treatments: on farm - fungicide + insecticide + water; IST - fungicide + insecticide + polymer; IST - fungicide + insecticide + polymer + drying powder; IST - fungicide + insecticide + polymer + drying powder + mineral fertilizer; control (without treatment). The experimental design was completely randomized for all tests. For the on farm treatment, an electric mixer was used, treating 10 kg of seeds. In the IST was used a batch seed treater, equipped with rotary atomizing disk. The dust was determined by the dust-off test and the treatments were distributed in the 5 x 4 factorial scheme, five seed treatments and four time intervals (2, 32, 62 and 92 days after treatment), with four replications. The abrasion test was conducted in a friabilometer, following the same design in the 5 x 3 factorial scheme, five seed treatments and three insertion positions of the filter paper, with four replications. After this procedure the seed treatment was analyzed by high performance liquid chromatography (HPLC), in the 4 x 2 factorial scheme, four treatments and two abrasion conditions (before and after the test). The Niklas® funnel was used to evaluate the fluidity of the seeds, conducting in a 5 x 4 factorial scheme, with five treatments and four-time intervals (0, 7, 14 and 21 min after treatment), ... === Mestre
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