Action level, concentration level of airborne eto in or at breathing level. Which is 0.5 ppm
Always decontaminate equipment after working in a field suspected of having the club-root fungus by thorough washing followed by spraying all surfaces with a disinfectant such as Lysol, formaldehyde, etc. Grow cabbage and related crops once every three to five years with crops not in the mustard family.
Do not plant where youâve planted other cabbage family members in the past two years. Keep the soil evenly moist and weed free. Feed it one time during the growing season with a complete high-nitrogen fertilizer. Like other cabbage family members, Chinese cabbage is susceptible to a number of pests and diseases. Keep the garden clean and watch for encroaching pests to combat an invasion early.