Zapata, Hector O.; Maradiaga, David Isaias; Pujula, … - Agricultural and Applied Economics Association - AAEA - 2011
This study conducts an investigation on the application of classical unit-root tests using parametric tests (the augmented Dickey-Fuller, 1979 – ADF), and nonparametric tests (Phillips and Perron, 1988—PP) to corn and soybean yields in the Delta states using county-level data from 1961 to...
