Fallowed soil should be roto-tilled every two weeks to reduce weeds and to expose nematodes to the sun. The less stress plants are under, the better able they are to withstand nematode attack. Watering plants deeply and less frequently will encourage the development of a deep root system that will reduce stress on plants and can help minimize nematode problems. Proper management of diseases and insects can also reduce stress and help reduce damage from nematodes. Nutrient deficiencies and soil compaction can inhibit root development and increase plant sensitivity to nematode damage.
Nematode damage is more severe in sandy soils than in heavy soils.
Addition of Organic Soil Matter Organic soil amendments can improve plant health and vigor, but they must be incorporated before seeding or transplanting. Amendments that improve the soil composition, moisture retention, or physical characteristics will help produce healthier plants. Compost and pine bark are two amendments that can improve soil conditions and plant health. Pine bark, which works best if fresh and ground into small pieces, has been reported to help suppress damage from root-knot nematodes. This should be done a month or more before planting.