1.   Other uses include removing Artex, lifting vinyl floor tiles, killing weeds and sterilising soil, etc.

2.   The chemical was almost totally ineffective in killing the weeds.

3.   However, although there was no damage to the crop, the herbicide was almost totally ineffective in killing the weeds.

4.   Among other tips, they suggest a chemical- free way to kill weeds is to use old carpet.

5.   Before the introduction of chemicals to kill weeds, farmers relied chiefly on cultivation and crop rotation.

6.   Biotechnology companies have engineered plants that are resistant to herbicides, making it possible to immerse a field in poisons that kill the weeds without affecting the crop.

7.   A few miles north of Pasco, in Othello, the East Columbia Basin Irrigation District is looking at a radically different way of killing water weeds.