Dinitroaniline herbicides have been used on the Texas Southern High Plains since the mid-1960s. Over this same period, cotton yields in this region have declined in spite of improved varieties and technology. Repeated applications of trifluralin and pendimethalin, each applied at 1x and 2x rates, were incorporated in 1983 through 1988. Variations in cotton stands, yields, and fiber quality were high due to environmental conditions. After six repeated applications, no reductions in cotton growth or yield were observed, even at the highest rates.

From ancient times to the present, common dandelion (Taraxacum officinale Weber in Wiggers ♯3TAROF) has been considered one of the most delectable of garden vegetables. People have carried the seeds from place to place for cultivation since before written history (9). According to legend, Theseus ate a dandelion salad after killing the Minotaur. Romans ate the plant as did the Gauls and Celts when the Romans invaded the North (9). The Anglo-Saxon tribes of Britain and the Normans of France continued to use the plant as food and as medicine to control scurvy and as a diuretic; it was planted in the medicinal gardens of monasteries (9).