出版社：Grupo de Pesquisa Metodologias em Ensino e Aprendizagem em Ciências
摘要：The objective of the present study was to analyze the relationship between rainfall variability and cassava yield in the municipality of Cruzeiro do Sul-Acre, taking into account the rainfall regime as an essential input for agriculture. Data on total monthly and annual rainfall observed in the city from 1993 to 2018 were used. the analyzed period. In 1995, it was verified that the registered values of rainfall are far from the average value. Regarding the years of cassava productivity, it is possible to verify that until the year 2012 there were no significant variations in the evaluated records. In the period 1993 to 2012, the highlight is the year 2010, whose productivity exceeded the value of 20 t.ha-1. It was found that from the year 2013 the highest productivity values for the cassava crop were recorded. In the interval between the years 2013 and 2018, the municipality recorded the highest productivity values during the analyzed period. The year 2015 stood out with a productivity that reached 32.3 t.ha-1. There was also an upward trend in crop productivity through growth in rainfall values. Through simple linear regression analysis, it was evidenced an increasing increase of 0.0043 t.ha-1 in cassava yield as a function of 1 mm of rain, in the city of Cruzeiro do Sul.
