Crescimento de plantas de pequizeiro à irrigação e adubação orgânica
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2012-03-02
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Universidade Federal de Goiás
Resumo
Brazilian Cerrado is considered the tropical savanna ecosystem richest in biodiversity
in the world, with around 10,000 plants species, and 4,400 are endemic to this environment. Fruit
species native to Brazil, mainly in the Cerrado, have been remembered and often exalted as to
their qualities as producers of fruits and other products for human use. Among all the species
identified as economically viable for the cerrado, the pequi (Caryocar brasiliense) presents a
major potential. Several studies have been conducted on species native to the Cerrado, but
information based on scientific research, about the fruit species of the Cerrado are still scarce.
Agronomic aspects of these fruit are poorly studied. Thus, the present study aimed to evaluate the
survival rate and growth of young plants of pequi, irrigated compared to non irrigated, conducted
with and without fertilizer. The study was conducted at the College of Agronomy and Food
Engineering, Federal University of Goiás (EA / UFG) in Goiânia-GO, Brazil. The orchard was
established with 120 seedlings spaced 5 m by 5 m, in January 2009. The experiment was initiated
in April 2010 using a randomized complete block design with split plot with six replicates. Each
repetition with 16 plants, 8 irrigated and 8 non irrigated. Each subplot with 4 plants, with and
without fertilization. The fertilization were performed during the rainy season (November 2010
and 2011), using organic compost. The irrigation system was by microsprinkler, which was used
during the dry season and rainy season when needed. The amount of water to be applied in each
irrigation was estimated based on crop evapotranspiration, obtained from the weather station of
the EA / UFG. Plant growth was assessed monthly based on plant height, length of the main
branch, stem diameter, number of branches, length and number of shoots. The results showed that
irrigation and fertilization did not influence the vegetative growth of young plants of pequi in the
first 3 years of age. Showing up as a species well adapted to the savanna conditions. Therefore,
the index of fixation of seedlings transplanted was of 97% and the plants showed a growth rate
considered normal for the conditions of the species
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TAVEIRA, M. R. Crescimento de plantas de pequizeiro à irrigação e adubação orgânica. 2012. 65 f. Dissertação (Mestrado em Agronomia) - Universidade Federal de Goiás, Goiânia, 2012.