Atributos físicos e hídricos do solo em ambientes de produção de cana-de-açúcar fertirrigada
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2019-12-02
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Universidade Federal de Goiás
Resumo
According to data from 2019/2020 of the Companhia Nacional de Abastecimento (CONAB), the
State of Goiás occupies the second national position in relation to the total cultivated area
(11.2%), sugarcane production (11.7%) and total ethanol production (15.4%) in the Brazilian
sugar-energy sector, in addition to the fourth position in sugar production (6.0%). Despite
relevant economic data, there are scientific articles that relate the intensive mechanization of
sugarcane to the worsening of the physical and hydric quality of the soil, in contrast to others
that indicate fertigation with vinasse as a mitigation of this degradation. Therefore, the objective
of this work was to evaluate the behavior of an Ferralsol under cultivation of sugarcane in
fertigated areas in the Midwest region of Brazil. Physical and hydric attributes were evaluated
in different soil layers (0.0-0.1, 0.1-0.2, 0.2-0.3 and 0.4-0.5 m) and crop cycles (first, third,
fifth, seventh and twelfth cut) of fertigated sugarcane, in addition to a reference area with native
vegetation. The physical and hydric attributes of the soil are affected by the cycle and fertigation
of the culture and cultivation of sugarcane. The soil of the third cycle shows greater deterioration
of physical attributes and less aggregation. The area of the fifth sugarcane cultivation cycle has
better hydric attributes. The addition of vinasse throughout the cycles of sugarcane cultivation
via fertigation leads to an improvement in physical attributes and aggregation, however, from
the fifth cycle on, it does not attenuate the deterioration of the hydric quality of the soil.
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GRAVINA, O. S. Atributos físicos e hídricos do solo em ambientes de produção de cana-de-açúcar fertirrigada. 2021. 93 f. Dissertação (Mestrado em Agronomia) - Universidade Federal de Goiás, Goiânia, 2019.