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Title: Determinação da água facilmente disponível para mudas de eucalipto em condições de viveiro
Authors: Torres, Hebert
Keywords: Água facilmente disponível;Eucalipto;Coeficiente de cultura;Viveiro;Water easily available;Eucalyptus;Crop coefficient;Nursery
Issue Date: 24-Jan-2012
Publisher: Universidade Federal do Espírito Santo
Citation: TORRES, Hebert. Determinação da água facilmente disponível para mudas de eucalipto em condições de viveiro. 2012. 55 f. Dissertação (Mestrado em Fitotecnica; Recursos Florestais) - Universidade Federal do Espírito Santo, Vitória, 2012.
Abstract: The paucity of information consumption regarding the water seedlings of forest species complicates the planning and management of irrigation in commercial nurseries most often leads to adoption of subjective criteria, leading to water stress, mainly due to excess water, which besides causing waste of water, causes loss of seedling diseases, due to excess humidity. The present work aimed to study the influence of substrate moisture on the productivity of seedlings of a hybrid clone of Eucalyptus grandis x Eucalyptus urophylla under nursery conditions and determine the Kc during the stage of seedling production and establish criteria for the easy management of irrigation in nurseries for the production of eucalyptus. The study was conducted in a greenhouse installed in the area of the Centro de Ciências Agrárias of the Universidade Federal of Espírito Santo, located in the city of Alegre-ES. The experimental design was completely randomized, with five levels of moisture in the substrate 90, 80, 70, 60 and 50% relative to the maximum water holding capacity of the substrate (RCMW) and three replications. The experimental unit was initially composed of 36 plants. The treatments were applied according to the monitoring of the quantity of water contained in the substrate by means of weighing the experimental units and the replenishment of the fraction of water lost by evapotranspiration. To follow the development and growth of seedlings were assessed following morphological parameters: height, collar diameter, leaf area, leaf dry matter, aerial part, root and total. The experimental data obtained were subjected to analysis of variance and when significant, means were compared by Tukey test at a significance level of 5%. The results of this study indicate that water is easily available for seedlings of a hybrid clone of Eucalyptus grandis x Eucalyptus urophylla until the level of 70% of RCMW, the value of Kc is 1.25 and the Irrigation control by weighing method shows be applicable in greenhouses
Appears in Collections:PPGPV - Dissertações de mestrado

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