OK. Here's how fumigation works..
Fumigation disinfects soil with a chemical called fumigant. Fumigants are volatile gases like methyl bromide or Telone. Soil fumigants typically are applied below the soil surface through either tractor-mounted shanks. Within a few hours of application, the gaseous fumigant disperses through soil pores from the area of high concentration near the injection point to areas of lower concentration. In most cases, the soil surface is mechanically compacted or covered with plastic film to slow fumigant emission to the atmosphere.
Fumigation disinfects soil with a chemical called fumigant. Fumigants are volatile gases like methyl bromide or Telone. Soil fumigants typically are applied below the soil surface through either tractor-mounted shanks. Within a few hours of application, the gaseous fumigant disperses through soil pores from the area of high concentration near the injection point to areas of lower concentration. In most cases, the soil surface is mechanically compacted or covered with plastic film to slow fumigant emission to the atmosphere.
Soil fumigation is used to control a wide range of soil borne pests including many root and foliar disease pathogens, plant parasitic nematodes, and weed seeds or vegetative propagules. Soil fumigants are usually applied several weeks or months before the crop is planted to reduce the chance of crop injury.
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