One of the most effective ways is to inoculate the growing medium with microbial antagonists , but such antagonists need to be thorougly screened and effective ones are carefully identified.Such efforts are effective only for soil borne pathogens. We need altogether a different set of treatments for other than soil borne diseases...

The use of solarization the use of elevated temperatures ideally with addition of of organic amendment can serve the objective of reducing pathogenic inoculum potential. In addition the use of microbial antagonists can complement the reduced pathogenic potential. Working with transplants the use mycorrhizae and growth promoting microbes are a powerful one two combination to promote plant health. In terms of plant genetics it is very important to look for adapted disease resistant genetics. Efforts need to employed to look for optimized plant nutrition this can be facilitated by the use of soil and plant analysis to balance plant nutritional needs. The ability to reduce water on foliage can be very critical for disease management. Controls can be applied based on critical time and needs these can be biological agents and plant extracts or surface active agents.

For controlling any kind of disease, you need to eliminate the source of the inoculate whether in the soil or in the plant. Soil sterlization should be performed before taking up plant production and thereafter screening of soil amendments to prevent entry of inoculum. Similarly, plants should be screened for any kind of disease. You can refer to the guidelines regarding plant and soil sterlization as attached.

The plant disease triangle stresses that disease results from a conducive disease environment combines with a susceptible host plant and the presence of a virulent pathogen. Genetics and environmental influences are determinant. As farmers we can chose our genetics and influence the environment the eradication of inoculum is not always feasible. While pathogens do indeed cause diseases the vast majority of the microbes are either innocuous or have beneficial effects. Probiosis is often overlooked as the commercial interests have touted the need for eliminating offending organisms something that is not always possible.