Influencia del manejo del agua y del sustrato en la calidad de la planta de Eucalyptus grandis Hill ex Maiden en contenedores
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Abstract
The reforestation programs that are carried out in the country require a good quality of plants in nursery. In this work is studied the influence of growing media and irrigation in the quality of the Eucalyptus grandis plant in the nursery of Pinar del Río University. To the different used growing media were obtaining the chemical composition and physical properties. Parameters and morphological index of the plants were evaluated, as well as their nutritious state. Physiologic parameters are analyzed as: cuticular transpiration and hidric potential at dawn and at noon. The Scholander pressure chamber is used for the determination of the hidric potential. It was carried out an economic valuation in function of the growing media studied and irrigation. The results demonstrated that the smallest values of cuticular transpiration, as well as the smallest differences of hidric potential at dawn and at noon they base the irrigation in alternating days in the hardening phase, what demonstrates that the plant has created a mechanism able to support the hidric deficit. It is corroborated that the new proposed growing media presents a better behaviour as for the morphological attributes of the plants taken place with equal result in the survival, height and diameter at neck of the root in the plantation and inclusive their decrease in the production costs. The growing media compound for filter cake (cachaza) between 50 and 90% more peat 40% and hen-dung and bat manure 10%, they are those of better results.
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References
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