The plantings should be reversed the next year. Other French marigold varieties, Tangerine, Petite Harmony, or Petite Gold, may be used. Either grow your own in sterilized soil or buy plants from a reputable dealer who grows in a sterilized medium. Woods dirt is good for growing your own transplants. It can be sterilized by spreading the soil in a pan and placing in the oven at 180 degrees to 200 degrees F for 35 to 40 minutes.
Good resistance is available in many tomato varieties and some other vegetable crops.
VFN mean the variety is resistant or tolerant to Verticillium wilt, Fusarium wilt and nematodes. Using resistant varieties is the easiest, least expensive, and most effective means of nematode control. Unfortunately, varieties resistant to root-knot are available only in certain crops. Pimento Pepper Mississippi Newheart Organic Control Clandasan 618 produced by Iogene Biotechnology advertisized to reduce nematodes. The material works by increasing the population of soil microorganisms that can feed on chitin.