Abstract

LOZADA GARCIA, Beatriz I  and  BARBOZA, Carmen. Tend of rainfall in Bramón, Táchira state, Venezuela. Agronomía Trop. [online]. 2007, vol.57, n.2, pp.89-98. ISSN 0002-192X.

The agriculture presents a high dependence of the climatic conditions. Of those elements of the climate, the rainfall is the responsible for the alternation in the yields, due to its inter-year variability. In the last years had increased the interest for the studies of variability and climatic change, so it is necessary to have homogeneous series. The objective of this study was to identify tendencies or trends in the series of annual rainfall, and of the rainfall of the dry (December-March) and wet (April-November) periods in Bramón (Táchira State, Venezuela), in the period from 1941 to 2005, and to estimate the year of beginning of the change in the tendency of the rainfall. The analysis of the tendency was done through the following not parametric tests: serial correlation (Wald-Wolfowitz), the coefficient of Spearman, Mann-Kendall, and the test of Pettit. A significant (α=0.05) increase of the annual total rainfall, and wet time was observed. The test of Pettit showed a significant change (α=0.05) in the year 1965.

Keywords : Rainfall Tendency in Bramón; Táchira State; Venezuela.