BIOLOGICAL SOIL HEALTH TEST: Microbial diversity is an excellent indicator of soil health (Nielsen and Winding 2002). They report that variation in microbial population or activities precede changes that can be noticed in some cases as early signs of soil degradation or amelioration. Water and nutrient supply from soil, particularly N and P, determine the plant growth both in natural and agro-ecosystems. It is important to understand that the above ground vegetation is the ultimate source of C for the microbes in the rhizosphere that, in turn, support the macro-fauna.
Imagine you couldn’t grow canola, warns farm leader. Clubroot’s arrival in the Peace isn’t a shocker, but it’s another sign farmers are flirting with disaster, say canola experts. If you’re growing non-resistant canola varieties, you could wake up one day to find ‘astronomical’ levels of clubroot spores, says agronomist Dan Orchard.