Potential Pests and Avocado Diseases Video Presentations Available

  • Dec 18, 2013

View three presentations concerning threats posed to California avocado groves by new pests and diseases, including laurel wilt disease, fusarium dieback disease, the polyphagous shot hole borer and the Florida redbay ambrosia beetle.

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Identifying Fusarium dieback disease

  • Jul 03, 2013

A new beetle that vectors a Fusarium dieback on avocado trees has been discovered in and near Los Angeles County. The newly discovered polyphagous shot hole borer beetle is indistinguishable from the tea shot hole borer beetle and is believed to be a new species of beetle.

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Avocado Root Health

  • Jun 12, 2013

Healthy avocado roots play an important role in producing consistent high-quality avocado crops from healthy avocado trees. Roots provide nutrients and water for strong healthy leaves, good shoot growth, flowering and fruit set, and avocado fruit growth.

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Avocado Trunk Canker Disease Symptoms

  • Jun 12, 2013

Phytophthora mengei (P. citricola) and P. cinnamomi have been associated with trunk canker and collar rot of avocado. The pathogen infects the crown, lower trunk and limbs of older trees. The disease develops after crowns, limbs, or trunks become infected through wounds, such as injuries from equipment, pruning, vertebrate chewing, and wind damage.

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Avocado Trunk Canker Disease Management

  • Apr 16, 2013

The measures recommended for the control of Phytophthora avocado trunk canker disease are similar to those described for Phytophthora root rot. In fruit, prevention of infection is challenging because it is likely caused by the splashing of Phytophthora spores from the soil surface to the fruit during rainy weather.

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Avocado Branch Canker Disease Management

  • Apr 16, 2013

The primary means of managing avocado branch canker disease is applying chemical treatment to any open wounds to prevent Botryosphaeriaceae spores from entering and initiating infection.

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