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black scurf of potatoes; rhizoctoniosis; rhizoctonia red-rot | |||
black scab of potato (Rhizoctonia solani); black scurf (Rhizoctonia solani); black speck (Rhizoctonia solani) | |||
brown root-rot |
Wurzeltöterkrankheit : 2 phrases in 2 subjects |
Agriculture | 1 |
Phytophathology | 1 |