T. lt; P gt; 4-amino-6 - (direct and ampere; Iacute; click) pic and its derivatives; 6-amino-2 - (direct and ampere; Iacute; click) pyridine-4-carboxilates and its derivatives; and all of these derivatives used as herbicides by M amp; eacute; lt; / P gt;<;p>;4-AMINO-6-(HETEROCÍ;CLICO)PICOLINICATOS Y SUS DERIVADOS; 6-AMINO-2- (HETEROCÍ;CLICO)PIRIMIDINA-4-CARBOXILATOS Y SUS DERIVADOS; Y MÉ;TODOS DE USO DE LOS MISMOS COMO HERBICIDAS.<;/p>;