Verticillium Wilt
When choosing an orchard site, have the inoculum level in the soil determined by a private laboratory. Preplant or planting site fumigation can reduce soil inoculum levels but will not eradicate the fungus or prevent ... [... more]
University of California IPM |
Alternaria Late Blight
Alternaria late blight occurs as black angular or circular lesions on leaves of both male and female trees. When the pistachio fruit are maturing, lesions appear on hulls. Black spores develop in the center of the ... [... more]
University of California IPM |
Tadpole Shrimp
The action threshold is determined by counting numbers of seedlings at various stages of development. Take samples twice during seedling development: at 5 to 7 days after flooding is initiated and again 3 days to a ... [... more]
University of California IPM |
General Properties Of Fungicides Used In Almonds
1 To reduce the risk of the development of resistance to the fungicide by the disease pathogen, rotate fungicides, using different chemical classes ... [... more]
University of California IPM |
Leafminers
Leafminer adults are very small flies, 0.1 inch long, black to blue, with parts of the thorax, legs, and abdomen yellow. Usually there is a prominent yellow area at the base of the wings. The minute white eggs are ... [... more]
University of California IPM |
Common Purslane
Common purslane, Portulaca oleracea, is a member of the Portulacaceae family with more than 120 different species found in that family. It is a weedy summer annual species that is abundant throughout the world, invading vegetable gardens, bare ... [... more]
University of California IPM |
Rice
Relative Toxicities of Pesticides Used in Rice to Natural Enemies and Honey Bees (4/04) ... [... more]
University of California IPM |
European Earwig
If you suspect that earwigs are causing damage, lift and shake or sharply tap any trunk wrappers and look for earwigs dropping to the ground, where they quickly scurry for cover. Alternatively, place a folded ... [... more]
University of California IPM |
Pear
Water quality becomes impaired when pesticides move off-site and into water. Air quality becomes impaired when volatile organic compounds move into the atmosphere. Each time a pesticide application is considered, ... [... more]
University of California IPM |
Cribate Weevil
As the weevils become sexually mature, they become less mobile and tend to stay close to the ground on younger leaves. Eggs are usually deposited in the soil around the roots of the host plant. Eggs hatch in about 18 ... [... more]
University of California IPM |
Beet Yellow Stunt
Beet yellow stunt causes pronounced yellowing of older leaves; later, infected plants collapse prematurely and die. Internally, the phloem tissue of the stem and crown is brown and necrotic. ... [... more]
University of California IPM |
Bean Aphid
A second, and equally important factor in reducing virus spread, is good field sanitation. Infected keeper beets that produce new vegetative growth after harvest act as sources of virus inoculum for new plantings. ... [... more]
University of California IPM |
