Begin by choosing a good planting site with suitable soil.
- Improve drainage and other soil conditions before planting.
- Take sanitation measures to limit pathogen spread. For example, a concrete drainage ditch on a slope above an avocado grove can divert pathogen contaminated runoff water.
- Control weeds, especially established perennials.
- Obtain certified, disease-free nursery stock.
- Use pathogen-resistant rootstocks.