Alternative to Pesticides

Plants that can kill other plants studied as alternatives for pesticides

It’s long been known that some plants are biologically capable of eliminating other plants. Now that is spurring their development as a low-maintenance, chemical-free option for weed control.

Scores of commercially available ground covers, grasses and ornamentals have shown an aptitude for overwhelming weeds. That includes the ability to outgrow or smother them, or secrete weed-suppressing compounds.

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This article by the Associated Press shines light on this study to use plants as natural pesticides rather than chemicals that may damage the environment. The Environmental Protection Agency (EPA) recently denied the use of a new pesticide, methyl iodide, also called iodomethane, fumigant. This new pesticide was proposed to replace the previous fumigant, which was banned by international treaty because of its harmful effects. Although the pesticide does not harm the crop, its fumes from the soil deplete the Earth's ozone layers and harm nearby inhabitants.

California classifies the fumigant as a carcinogen, and regulators have expressed concern about its safety as an agricultural product. Studies also show chronic exposure can harm the central nervous system, lungs, skin and kidneys. The California Department of Pesticide Regulation is conducting its own review of methyl idodide and would not likely rule on its use in the state for at least a year regardless of EPA's ultimate decision, said spokesman Glenn Brank.

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