ABSTRACT Despite the important role of coffee production in the economy of Espirito Santo, the second largest coffee producing state in Brazil, productivity is still below the Brazilian average. One of the factors that explain this low productivity is the presence of nematodes of the genus Meloidogyne. Contaminated seedlings are an important and efficient agent for disseminating nematodes. According to normative instruction no. 35 (IN 35), of 11/29/2012 of the Ministry of Agriculture, Livestock and Supply (MAPA), the presence of Meloidogyne spp. in a single plant among a field-lot of seedlings condemns it, and the plants that compose that lot should be destroyed. In Espirito Santo, no evaluation has been carried out in nurseries covering the entire State for phytonematode detection. Therefore, the objective of this work was to carry out a nematological survey in nurseries to guide the nurserymen in relation to fulfilling IN 35 of MAPA, in addition to guiding them regarding the phytosanitary care during the production of their seedlings. The nurseries were evaluated in 19 municipalities located in both the north and the south of Espírito Santo. There were Meloidogyne spp. in evaluated samples.

In order to evaluate the effect of potassium silicate spray on the control of coffee leaf rust and coffee yield, an experiment was conducted during the 2005/2006 and 2006/2007 growing seasons on Coffea arabica cv. Catuaí Vermelho IAC 144, in a location situated at an elevation of 850 m in Coimbra, Minas Gerais, Brazil. The treatments consisted of: 1 - potassium silicate; 2 - potassium silicate + copper hydroxide; 3 - copper hydroxide; 4 - epoxiconazole formulated with pyraclostrobin and 5 - control treatment. Six applications of potassium silicate and copper hydroxide were made twice per month from December to March of each year. Two applications of the systemic fungicide were done in December and March of each year. Potassium silicate alone or in combination with copper hydroxide was not efficient in reducing coffee leaf rust incidence and increasing yield under high incidence of coffee leaf rust.

RESUMO O presente trabalho teve como objetivo avaliar o efeito de diferentes tratamentos com fungicidas e hipoclorito de sódio na redução da incidência de fungos em sementes de espécies florestais nativas da Mata Atlântica. O experimento foi conduzido empregando-se o delineamento inteiramente casualizado, no esquema fatorial 5x5, com cinco níveis do fator A (espécies florestais) e cinco níveis do fator B (tratamento químico e desinfestação superficial com hipoclorito de sódio), com quatro repetições. Foram identificados os gêneros fúngicos Fusarium, Alternaria, Aspergillus e Penicillium. As espécies de jacarandá-da-Bahia e ipê-roxo apresentaram menor incidência fúngica com 1% e 1,3%, respectivamente. Exceto para a espécie de angico- vermelho, o fungicida Pencicurom e o hipoclorito de sódio não deferiram estatisticamente da testemunha nas espécies avaliadas. Os tratamentos de sementes com os fungicidas Captan e Tiram proporcionaram resultados satisfatórios quanto à redução da incidência fúngica em sementes de espécies florestais.

ABSTRACT This study evaluated the effect of different fungicide and sodium hypochlorite treatments in reducing the incidence of fungi on seeds of native species of the Atlantic rainforest. The experiment was done using the completely randomized design in a 5x5 factorial with five levels of factor A (forest species) and five levels of factor B (chemical treatment and surface disinfection with sodium hypochlorite) with four replications. The fungal genera Fusarium, Alternaria, Aspergillus and Penicillium were identified. The species ‘Jacarandá- da-Bahia’ and ‘Ipê-roxo’ had lower fungal incidence, 1.0% and 1.3%, respectively. Except for ‘Angico Vermelho’, the fungicide pencycurom and sodium hypochlorite were not significantly different from the control in the species evaluated. Seed treatment with fungicides ‘Captan’ and ‘Tiram’ yielded satisfactory results in reducing the incidence of fungal contamination in forest species seeds.