One could consider, for example, that using resistant varieties, fallow, cover crops and trap crops are merely a part of crop rotation.
Some, consider resistant varieties to be an aspect of biological control, while others consider them a totally separate category of management.
We will cover soil amendments as an aspect of biological control, although it could also be considered another cultural technique.
In reality, nematode management is a spectrum of techniques with considerable overlap between methods. Each practicing nematologist works out their own categorization in a way that helps them best plan, explain, and carry out a management program.