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We review the assumptions leading to the description of long distance QCD by a Lagrangian density expressed in terms of dual potentials. We find the color field distribution surrounding a quark anti-quark pair to first order in their velocities. Using these distributions we eliminate the dual potentials from the Lagrangian density and obtain an effective interaction Lagrangian L_I ( \vec x_1 \, , \vec x_2 \, ; \vec v_1 \, , \vec v_2 ) depending only upon the quark and anti-quark coordinates and velocities, valid to second order in their velocities. We propose L_I as the Lagrangian describing the long distance interaction between constituent quarks. Elsewhere we have determined the two free parameters in L_I, \alpha_s and the string tension \sigma, by fitting the 17 known levels of b \bar b and c \bar c systems. Here we use L_I at the classical level to calculate the leading Regge trajectory. We obtain a trajectory which becomes linear at large M^2 with a slope \alpha' \simeq .74 \, \hbox{GeV}^{-1}, and for small M^2 the trajectory bends so that there are no tachyons. For a constituent quark mass between 100 and 150 MeV this trajectory passes through the two known Regge recurrences of the \pi meson. In this paper, for simplicity of presentation, we have treated the quarks as spin-zero particles

A CONSTITUENT QUARK-ANTIQUARK EFFECTIVE LAGRANGIAN BASED ON THE DUAL SUPERCONDUCTING MODEL OF LONG DISTANCE QCD