Efeito do beneficiamento sobre a qualidade inicial de sementes de soja e após o armazenamento

Abstract

The objective was to evaluate the effect of processing at different stages of the process on the initial quality of soybean seeds is much like after 180 days of storage in uncontrolled conditions. Throughout the processing, after each piece of equipment was collected throughout the flow of seeds in the following sampling points: hopper, after pre-cleaning, after shower, after cleaning, after spiral classifier After-sieve - 6.0, After classifier-sieve - 5.5, After densimetric final - sieve - 6.0 and After densimetric final - sieve - 5.5. Part of the seeds obtained from each point were treated with the mixture of carbendazim fungicides thiram trade name Derosal Plus at the dosage of 200 ml/100Kg seed and part untreated. The seeds were evaluated by determining: physical purity, moisture content, test hypochlorite, germination, accelerated aging, speed of emergence, cold test, tetrazolium and sanity. The statistical design was completely randomized in factorial scheme 9x2, with nine points and collected seeds treated and untreated with four replications. The seeds were evaluated in two distinct periods: Being the 1st - shortly after the processing (Home) and 2nd - the six months after processing. It can be concluded that seeds collected after the last machine densimetric - (sieve 6.0 and 5.0) were generally higher percentage of normal seedlings and reduce the incidence of mechanical damage and fungi. The fungicide treatment was effective in controlling the fungus Aspergillus sp., Cladosporium sp. Fusarium sp. And Penicillium sp. at both assessment times. The store shows the latent effect caused by mechanical damage, especially for seeds collected after pre-cleaning machine.