Tratamento industrial de sementes: quantificação do ingrediente ativo em lotes de milho doce

Abstract

This work aimed the evaluation of the variation of active insecticide ingredientsin the industrial treatment of sweet corn seeds, quantifying them by High Performance Liquid Chromatography (HPLC) and investigating the physiological performance impact after three months of storage. The study was conducted at Monsanto Brazil LTDA, in Uberlândia. Four sweet corn batches were used (A, B, C and D), and three sieves (C1, C2 and C3). Forthis experiment was carried out the industrial processing of seeds and evaluated the physiological quality by the germination and flowerbed test. Four treatments were used: T1: yellow seed (without treatment); T2: seeds treated with Cruiser® 350 FS; T3: seeds treated with Poncho®; and T4: seeds treated with Maxim XL. In experiment 2 were evaluated the HPLC results of these batches and the technical efficiency of the HPLC.It is concluded that the HPLC is efficient in quantifying the active ingredient of sweet corn batches treated with Cruiser® 350 FS and Poncho®. It is possible to conduct seed treatment three months before sowing without physiological performance impact for sweet corn seeds, using Advanced Maxim, Cruiser® FS 350 or/and Poncho®. Considered important realize the industrial seed treatment with dosages by seed number, which is explained by differences in the number of seeds Kg-1 between batches of smaller and larger sizes.