Application of some fungicides can inadvertently impact not only the pathogenic fungi being combated but also the beneficial mycorrhizal fungi growing in the roots. Typically, contact kill foliar sprays like Trifecta Crop Control are safe when applied as directed. Systemic fungicides and a contact kill pesticide applied as a root drench have the potential to damage or greatly inhibit the formation of healthy mycorrhizal colonies.
Is there anything that inhibits mycorrhizal establishment?
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