|What product can I pour on this bed to eliminate
the nematode population?
All the roots have knots on them.
|It can be difficult to control nematodes once they've attacked your tomato plants but you may have some success with this simple recipe:
Mix one=half cup of regular white table sugar into 1 gallon of water in a bucket.
Stir thoroughly until the sugar is completely dissolved. Pour directly into the soil that is affected by nematodes. The sugar will not harm the tomato plants, but can help to suffocate the nematodes.
To avoid damage next year, plant your tomatoes in a different garden bed. Solarize the soil in the infested bed by covering with clear plastic for the entire summer. The plastic will help heat the soil up to a high enough temperature that it will kill the nematodes.