Rainfall profiles and sisal productivity for Bahia mesoregions, Brazil

Sisal is widely produced in the semi-arid region of Bahia State, Brazil, and an important source of economic income for rainfed agriculture. Thus, the objective of the study was to analyze and classify the historical series of rainfall in relation to its profiles and the trends related to rainfall a...

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Bibliographic Details
Published in:Dyna (Medellín, Colombia) Colombia), 2022-03, Vol.89 (220), p.35-42
Main Authors: Lopes, Iug, Carvalho, Ailton Alves de, Guimarães, Miguel Julio Machado, Melo, Juliana Maria Medrado de, Alfaro, Marcela Daniela Mollericona, Leal, Brauliro Gonçalves
Format: Article
Language:English
Subjects:
Agave sisalana Perrine
Agricultural economics
Arid regions
Arid zones
climate variability
kendall
mann
Mann-Kendall
Productivity
Rainfall
Rainfed farming
Semi arid areas
Semiarid lands
Sisal
Trends
variabilidad climática
Water balance
Weather stations
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Summary:Sisal is widely produced in the semi-arid region of Bahia State, Brazil, and an important source of economic income for rainfed agriculture. Thus, the objective of the study was to analyze and classify the historical series of rainfall in relation to its profiles and the trends related to rainfall and sisal production in two mesoregions and four meteorological stations. Pluviometric characterization and water balance were carried out; data were organized to fit Gumbel's model and classified by the Quantis technique; then, the trend was determined through the non-parametric test of Mann-Kendall. Average rainfalls between 565.1 and 687.3 mm were obtained, very dry years with rainfalls between 370.3 and 445.7 mm and very rainy years, between 748.3 and 962.5 mm, with a trend of reduction of productivity in years classified as dry and very dry and vice versa.
ISSN:0012-7353
2346-2183
DOI:10.15446/dyna.v89n220.94395