Weed Photo Gallery
The UC IPM Weed Photo Gallery includes many, but not all, weed species commonly found in California farms and landscapes. Additional species will be added over time. Acknowledgments ... [... more]
University of California IPM |
Avocado
Phytophthora Canker and Collar Rot (7/01) ... [... more]
University of California IPM |
Armored Scales
Armored scales are distributed on many hosts throughout the avocado-growing areas of California. Latania scale is the most commonly found armored scale on avocado. The occurrence of California red scale on avocado is ... [... more]
University of California IPM |
Fuller Rose Beetle
Fuller rose beetle is common in citrus groves and can also be a problem in young plantings of avocado. The beetles feed on leaf margins, causing a ragged, notched, or serrated appearance. This type of injury is ... [... more]
University of California IPM |
Sunblotch
Sunblotch can occur anywhere avocados are grown. While there have been serious outbreaks of sunblotch in the past, it is currently considered to be a minor problem that can be avoided by not allowing it to be ... [... more]
University of California IPM |
Bacterial Canker
The first visual symptoms of bacterial canker on the bark are slightly sunken dark areas with a watery necrotic pocket under the surface. As the canker develops, the bark splits, usually at one side of the canker, ... [... more]
University of California IPM |
Armillaria Root Rot
Armillaria root rot spreads from place to place in infected wood. This wood may be a root fragment or part of an infected nursery tree. It may be carried by flood water, by leaf mulch gathered from under infected ... [... more]
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Dothiorella Canker
The principal evidence of infection by Dothiorella gregaria is a white powder that exudes from the bark and a cracking and shedding of the outer bark. Affected trees sometimes gradually die back and look unthrifty; ... [... more]
University of California IPM |
Anthracnose
After being deposited on the undamaged green fruit surfaces, the spores germinate and penetrate the fruit, causing small brown to black spots surrounding the lenticels. There is no further development until the fruit ... [... more]
University of California IPM |
Amorbia
The egg, larval, and pupal stages of amorbia are generally heavily parasitized by a variety of beneficial insects. One of the most effective parasites of amorbia eggs is the tiny wasp, Trichogramma platneri. Amorbia ... [... more]
University of California IPM |
Avocado Root Rot
Gypsum and Mulch. Create soil conditions that suppress Phythopthora root rot by applying gypsum (1500-3000 kg/ha or 25 lb of gypsum under the canopy of each tree) and mulch (6-12 inches, but kept 6 inches away from ... [... more]
University of California IPM |
Omnivorous Looper
Monitor larvae throughout spring and summer, particularly from May through July, at 7- to 10-day intervals. Pheromone traps are commercially available and are used primarily to identify periods of peak flight ... [... more]
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