Produção e nutrição mineral de mudas de Eucalyptus urophylla fertirrigadas com água residuária da suinocultura

• Autor(a) principal: Batista, Raquel Oliveira
• Data de Publicação: 2010
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/3558
• topic: Dejeto suíno; Eucalipto; Qualidade de mudas; Swine manure; Eucalyptus; Seedling quality; CNPQ::CIENCIAS AGRARIAS::ENGENHARIA AGRICOLA::ENGENHARIA DE AGUA E SOLO

This study aimed to analyze the remaining wastewater from swine culture (RWS) use in the seedlings production of Eucalyptus urophylla in two substrates alone, evaluating the effect of RWS different proportions and seedlings ages in their morphological quality and nutritional. The experiment was carried out at the Hydraulics Experimental Area, Irrigation and Drainage, Department of Agricultural Engineering in greenhouse. The experiment consisted of 10 treatments in a factorial 5 x 2 (5 RWS proportions supplemented with nitrogen fertilization and two seedlings ages), with different number of repetitions, and the statistical used design was a randomized block. The used substrates were Mecplant®, pine bark substrate (PBS) and an urban municipal solid waste compound (MSW). To track the performance of studied species seedlings, the following characteristics were evaluated: 1. shoot height (H), 2. collar diameter (CD), 3. shoot dry mass (SDM), 4. root dry mass (RDM), 5. total dry mass (TDM), 6. seedling height relationship/stem diameter (H/SD), 7. shoot dry mass ratio/root dry mass (SDM/RDM), 8. and Dickson quality index (DQI). We analyzed the concentrations of N, P, K, S, Ca, Mg, Fe, Cu, Zn, Mn, and Na in the plants leaf, stem and roots. These characteristics were evaluated at 75 and 90 days after sowing (DAS). It is showed that the proportion of 50% of RWS brings results in better nutritional and morphological characteristics of eucalyptus seedlings, with good use of slurry during the production process. For both substrates, the seedlings reached morphological characteristics suitable for field planting to 90 days after sowing. In PBS, the most nutrients in the seedlings at 75 DAS showed higher concentrations compared to 90 DAS. In both seedling ages, there is a good nutritional status, because they did not have concentrations that would indicate deficiency and toxicity. In MSW, the seedlings showed levels adequate for most nutrients in boths evaluated ages.