. Der Tropenpflanzer; zeitschrift fr tropische landwirtschaft. Tropical plants; Tropical crops. Abbild. 4. Wurzelhalserkrankung der Baumwolle. Habitusbild. Abbild. 5. Beschädigung durch Stengel- bohrer (links) und Wurzclhalskrankhcit mit Flugloch (rechts!. IG'. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Berlin

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