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Flat top decay syndrome of the giant cardon cactus of Baja California, Mexico

This presentation discusses the flat-top decay syndrome observed in the giant cardon cactus of Baja California, Mexico. It explores the symptoms, patterns, and various types of decay, including the flat-top decay and gray decay. The presentation also addresses the disappearance of affected cacti and provides further insights.

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Flat top decay syndrome of the giant cardon cactus of Baja California, Mexico

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  1. Flat top decay syndrome of the giant cardon cactus of Baja California, Mexico Other symptoms of flat top decay and gray decay (Presentation no. 4) Click to progress

  2. A second pattern of flat-top decay, found only in the southern Bahía Concepcíon area (site 4 on the map). The decay starts with a single deep crack in the main stem of the plant, without apparent additional rotting

  3. Deep cracks may appear anywhere along a branch

  4. When the crack is deep enough, the branch falls

  5. Common flat-top decay of cardon at Bahía Concepcíon

  6. A flat-top branch may develop a new side branch that can grow to more than 5 m

  7. A third type of decay, found only south of El Conejo. The entire plant becomes gray or white and later dies

  8. Please download presentation number 5 describing why the affected cacti disappear

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