Researchers Eye Molasses as Alternative to Methyl Bromide

Scientists at the USDA Agriculture Research Service are examining the use of molasses to stimulate microbial activity and possibly replace methyl bromide — a fumigant used to control pests and pathogens. Methyl bromide has been used by farmers since the 1930s, but has been found to deplete the ozone layer, forcing growers to find other forms of fumigants. Researchers found that by adding a carbon source, such as molasses, to saturated topsoil and covering with a plastic tarp, the tarp “cooks” the weed seeds in the soil and the carbon and water increase microbial activity. Read more.