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Umuarama, Brazil

Luz J.M.Q.,UFU ICA | Carvalho A.F.,UFU ICA | de Santana D.G.,UFU ICA | Silva M.A.D.,Federal Rural University of Pernambuco
Horticultura Brasileira | Year: 2010

Dorstenia cayapia Vellozo (Moraceae), popularly known as carapiá, is a primitive species from the geological point of view but well evolved from the point of view of morphological structures; of large medicinal use, this plant reproductive capacity was not well studied. Since this species is threatened with extinction, the objective of this study was to evaluate the physiological quality of its seeds by their biological and technological attributes. The experiment was set up in a completely randomized design with a factorial 2×3 scheme, in which the first factor was the temperature (constant of 25°C and alternated 20-30°C) and the second factor was the substrate (vermiculite, rolled paper and filter paper), with four replications of 20 seeds per plot. The use of the substrates vermiculite and rolled paper at 25°C increased the percentage of normal seedlings and germinated seeds. The seeds germination was slower when they were placed on filter paper, and it was more asynchronous in this substrate. Additionally, the alternating temperature 20-30°C delayed the beginning of the germination of Dorstenia cayapia seeds.

Luz J.M.Q.,UFU ICA | Oliveira G.,UFU ICA | Queiroz A.A.,UFU ICA | Carreon R.,Aminoagro
Horticultura Brasileira | Year: 2010

Biofertilizer application provides positive responses of several vegetable crops. The effect of foliar application of liquid biofertilizers on seedling and on commercial production of lettuce cultivar Vera were evaluated from October 2005 to January 2006. Seedling production was carried out in a nursery specialized in the production of vegetable seedlings, in Uberlandia, Minas Gerais State, Brazil, and the crop growing was carried out at a field of the Universidade Federal de Uberlandia. Plant height, number of leaves, aboveground part fresh weight and root diameter were evaluated on seedlings and fresh weight of the aboveground part and roots were evaluated on plants in the field. Aminoagro Raiz, Aminoagro Folha Top, Aminoagro Mol, Nobrico Star, Aminolom Foliar and Lombrico Mol 75 were the assessed biofertilizers. The first experiment using seedlings was arranged in a completely randomized design with 15 replications and the second one, which was carried out in the field, was in randomized blocks with four replications. The solely use of liquid organomineral biofertilizers, via foliar application, was superior in comparison to the control treatments for most of the evaluated variables at the plantlet and field stages.

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