All growing weed seedlings within the fumigated zone. Non-germinated seeds or established weeds may not be controlled.
Gas is toxic to most young, green plant tissues.
Application Methods Injected into the soil 15 - 20 cm deep using special application equipment. The soil surface is sealed by either surface irrigation or physically compacting the soil surface. Cultivation of the fumigated soil after the desired period of time allows the gas to escape. Residual Activity Varies with soil type but usually 4 - 6 weeks if left undisturbed. Aways check the soil for fumigant using the lettuce-seedling bioassay before planting a crop in it.