Caracterização microclimática em lavoura de café conilon em diferentes alinhamentos : norte-sul e leste-oeste
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Data
2018-02-28
Autores
Bis, Ana Paula Pereira
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Universidade Federal do Espírito Santo
Resumo
Coffee is one of the most important agricultural commodities in the global market,
because it is a drink consumed by at least half the world's population. However, this
significant economic contribution made by coffee production may be affected if
problems arising from global climate change are not studied. In this context, the first
chapter "Microclimatic characterization of conilon coffee cultivated in the north-south
alignment" aims to evaluate the climatic variables in order to quantify them and to
point out possible effects on a north-south aligned crop. The experiment was carried
out in four dates from December 2016 to September 2017. The variables irradiance,
air temperature and vapor pressure deficit were quantified on the side of the plant
facing east and west. Thermal images were obtained using an infrared camera to
determine the coffee. There was no significant difference between the two sides for
the evaluated factors that characterize the plant growth. The west side of the plant
had higher values of irradiance, temperature and vapor pressure deficit in the
afternoon, reaching an average difference of 5°C between the two sides at
approximately 16 hours. Leaf temperature had similar behavior to air temperature,
reaching an average difference of approximately 12°C between the two sides at 14
and 16 hours. The second chapter aimed to evaluate the influence of the east-west
plantation alignment on the microclimatic aspects and plant growth in order to
quantify the variables and to point out their possible effects on the coffee crop. Data
collection was carried out in a full-fledged conilon coffee crop (Coffea canephora) at
2 years and 6 months of age at the beginning of the experiment, with a spacing of
3,0m x 1,0m, with a height of approximately 1,6 m. The experiment was carried out in
four dates from December 2016 to September 2017. The variables irradiance, air
temperature and vapor pressure deficit were quantified on the plant side facing north
and south by means of external data loggers. Thermal images were obtained using
an infrared camera to determine the coffee leaf temperature on both sides of the
plant. The growth of the plant and leaf concentration on the sides of the plant facing
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north and south were evaluated. The northern side of the plant presented higher
values of irradiance, temperature and vapor pressure deficit, reaching a difference of
4 °C between the two sides. The leaf temperature had a similar behavior to the air
temperature, reaching a difference of approximately 11 °C between the two sides at
noon. There was no significant difference between the two sides for the evaluated
factors that characterize the plant growth.
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Coffea canephora , Irradiance , Irradiância , Temperature , Temperatura
Citação
BIS, Ana Paula Pereira. Caracterização microclimática em lavoura de café conilon em diferentes alinhamentos : norte-sul e leste-oeste. 2018. 36 f. Dissertação (Mestrado em Agricultura Tropical) - Programa de Pós-Graduação em Agricultura Tropical, Universidade Federal do Espírito Santo, São Mateus, 2018.