Resumo -A cama de aviário é um resíduo orgânico abundante provindo da criação de aves, do qual se obtêm um adubo que pode ser utilizado na produção de mudas de espécies florestais. O objetivo deste estudo foi avaliar o efeito do adubo de cama de aviário na germinação, desenvolvimento e qualidade de mudas de Eucalyptus dunnii Maiden em casa de vegetação. O delineamento experimental foi inteiramente casualizado, com cinco tratamentos e quatro repetições. Os tratamentos foram 0%, 20%, 40%, 60% e 80% de adubo de cama de aviário, adicionados ao substrato comercial à base de turfa e casca de arroz carbonizada. Foram avaliados periodicamente (30, 60 e 90 dias) o índice de velocidade de germinação, índice de velocidade de emergência, diâmetro de coleto, altura, relação entre altura e diâmetro do coleto e a sobrevivência das mudas. Aos 90 dias avaliaram-se o índice de qualidade de Dickson e os pesos de matéria seca das raízes, da parte aérea e total. O adubo de cama de aviário é um produto viável para produção de mudas de Eucalyptus dunnii em quantidades moderadas. O uso de 20% de adubo de cama de aviário no volume total do substrato favorece o desenvolvimento e a qualidade das mudas. Quantidades superiores a 20% tendem a ser prejudiciais à germinação e à sobrevivência das mesmas.Palavras-Chave -resíduo orgânico, substrato, espécies florestais, casa de vegetação. Abstract -The poultry manure is an abundant organic residue from the poultry farming, from which a fertilizer can be obtained and used in the production of forest species seedlings. The objective of this study was to evaluate the effect of the poultry manure fertilizer on germination, development and quality of Eucalyptus dunnii Maiden seedlings in a greenhouse. The experimental design was completely randomized, with five treatments and four repetitions. The treatments were 0%, 20%, 40%, 60% e 80% of poultry manure fertilizer added on commercial substrate made of peat and charred rice husk. Periodically (30, 60 and 90 days) the germination speed index, the emergence speed index, the stem diameter, height, the relation between height and stem diameter and the survival of seedlings were evaluated. At 90 days were evaluated the Dickson quality index, dry weight of root, dry weight of shoot and dry weight total. The poultry manure fertilizer is a viable product for use in the production of Eucalyptus dunnii seedlings in moderate amounts. The use of 20% of poultry manure fertilizer in the total volume of the substrate favors the development and quality of the seedlings. Quantities greater than 20% tend to be harmful to germination and their survival.
This work evaluated methods of overcoming dormancy in Jatoba seeds (Hymenaea courbaril L.) by utilizing survival analysis. 75 seeds per treatment were evaluated: without treatment (T1), immersion in water at outdoor temperature for 120 h (T2) and 72 h (T3), immersion in water at 90 ºC and rest in the same water for 24 h (T4), mechanical scarification (T5) and mechanical scarification and soaking it in water
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