Herbicides were developed during the twentieth century to be used with conventional tillage for weed control. Conservation (or minimum) tillage subsequently evolved, which enabled less soil damage when used with herbicides.

Los herbicidas se desarrollaron durante el siglo XX para su uso con la labranza convencional con el fin de controlar malezas. Posteriormente, evolucionó la labranza de conservación (mínima), que permitió menor daño al suelo cuando se utilizaba con herbicidas.

This Issue Paper identifies the nature of gene flow and discusses the relatively limited situations in which it is likely to cause economic problems in the production of commercial biotech crops.

In an effort to reduce greenhouse gas emissions, expand domestic energy production, and maintain economic growth, public and private investments are being used to pursue dedicated feedstock crops for biofuel production.