Phytophtora%20Root%20Rot (Phytophtora%20spp.) - Phytophtora%20root%20rots%20are%20pathogens%20that%20target%20a%20plant%27s%20root%20system%20and%20reduce%20the%20ability%20for%20the%20plant%20to%20transport%20water%20and%20nturients.%20It%20exists%20typically%20as%20a%20parasite%20in%20a%20variety%20of%20plant%20hosts%2C%20and%20manifests%20itself%20most%20obviously%20through%20rotting%20of%20the%20stem%2C%20crown%2C%20and%20roots%20of%20a%20plant.%20While%20infection%20begins%20most%20oftentimes%20in%20the%20roots%2C%20aboveground%20symptoms%20can%20sometimes%20be%20presented%20first.