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| How to Grow Marijuana Guide to Cannabis Cultivation |
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Phytophthora Root Rot
Phytophthora root rot (Phytophthora spp.) are usually associated with root rots of established plants but are also involved in damping-off. These species enter the root tips and cause a water-soaked brown to black rot similar to Pythium. These fungi survive indefinitely in soil and plant debris.
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