Performance of hybrid corn seed treated with Complete?? Avicta during storage

Os produtos a serem aplicados no tratamento sanit??rio de sementes devem oferecer prote????o suficiente tanto ??s sementes como ??s pl??ntulas no campo, mantendo os fungos, insetos e nemat??ides devidamente controlados. O objetivo do presente trabalho foi verificar o poss??vel efeito imediato e latente do produto Avicta Completo (a????o fungicida, inseticida e nematicida) sobre a qualidade fisiol??gica de sementes de milho h??brido. Foram utilizandos seis h??bridos da empresa Pioneer: 30K73; 30F35; 30F80; 30K75; 30R50 e 32R22. As sementes foram submetidas aos seguintes tratamentos sanit??rios: 1) testemunha, 2) Avicta Completo??, 3) Superdosagem de Avicta Completo?? 100%, sendo ent??o armazenadas em temperatura ambiente e c??mara fria(10oC e 60% de Umidade Relativa) por 350 dias. As avalia????es foram feitas aos 50, 150, 250 e 350 dias, sendo as caracter??sticas avaliadas: germina????o, teste de frio e envelhecimento acelerado. Os ensaios foram realizados no Laborat??rio de Sementes da empresa Tropical Melhoramento e Gen??tica e os dados foram submetidos ?? an??lise estat??stica, utilizando-se o programa estat??stico Sisvar?? (FERREIRA, 2000). Os dados foram discutidos conforme an??lise estat??stica sobre o efeito isolado dos produtos e a intera????o ambiente/armazenamento no qual se obteve as seguintes conclus??es: A redu????o da qualidade fisiol??gica de sementes de milho variou em fun????o do tratamento, do h??brido e do tempo em que as sementes permaneceram armazenadas ap??s o tratamento e a redu????o da qualidade fisiol??gica das sementes intensificou-se com prolongamento do armazenamento das sementes tratadas, validando, portanto, a seguran??a do tratamento e armazenamento com Avicta Completo at?? 250 dias, o que ajuda ao gerenciamento do tratamento nas unidades de beneficiamento de sementes das empresas produtoras de sementes de milho.The products to be applied in the disinfestation of seed shall provide sufficient protection to seed as much as the seedlings in the field, keeping the fungi, insects and nematodes properly controlled. The objective of this study was to investigate the possible effect immediate and latent product Avicta Complete?? Pack (with fungicide, insecticide and nematicide action) on the physiological quality of hybrid maize seed. Was used six hybrids from Pioneer Company: 30K73, 30F35, 30F80, 30K75, 30R50 and 32R22. The seeds were submitted to the following health treatments: 1) control, 2) Avicta Complete??, 3) overdose Avicta Complete?? 100%, and then stored at room temperature and cold chamber (100 C and 60% RH) for 350 days. The evaluations were performed at 50, 150, 250 and 350 days, and the characteristics evaluated: germination, cold test and accelerated aging. Assays were performed at the Laboratory of Seeds of Tropical Breeding and Genetics Company and the data were subjected to statistical analysis using the statistical program Sisvar?? (FERREIRA, 2000). Data were analyzed according to statistical analysis on the isolated effect of the products and environment interaction / storage in which we obtained the following conclusions: the reduction of the physiological quality of corn seeds varied depending on the treatment of the hybrid and the time that seeds remain stored after treatment and the reduction of physiological seed quality intensified with prolonged storage of the treated seed, it is validating therefore the secure processing and storage Avicta Complete?? Pack with up to 250 days, which helps the management of treatment on seed processing units in Seed Corn Companies