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 |
Nectarine
Relative Toxicities of Insecticides and Miticides Used in Nectarines to Natural Enemies and Honey Bees (6/02) ... [... more]
University of California IPM |
Phytophthora Root And Crown Rot
Symptom expression depends upon how much of the root or crown tissues are affected and how quickly they are destroyed. Generally, crown rots advance rapidly and trees collapse and die soon after the first warm ... [... more]
University of California IPM |
Pacific Flatheaded Borer
The Pacific flatheaded borer overwinters in the prepupal stage. Pupation occurs in spring, and beetles begin to emerge in April. Adult beetles are flattened and vary in length from 0.5 to 0.75 inch. They are dark ... [... more]
University of California IPM |
Brown Rot Blossom And Twig Blight
Monilinia fructicola overwinters on mummified fruit that fall to the ground in late fall or early winter; a few mummified fruit remain in the trees. In spring, apothecia form on mummies that are on the ground; these ... [... more]
University of California IPM |
Oriental Fruit Moth
Use either bait pans or pheromone traps to monitor flights; pheromone traps are preferred by most PCAs and farmers. Once the first moth is trapped, accumulate degree-days (DD) to estimate when the onset of the second ... [... more]
University of California IPM |
Western Flower Thrips
Begin monitoring thrips as individual blocks begin to bloom. One way of monitoring for adult thrips is to slap a clump of flowers in the palm of your hand and look for dislodged thrips adults. A better method is to ... [... more]
University of California IPM |
Peach Silver Mite
Peach silver mites overwinter as females in bark crevices, around buds, and under bud scales. They move to the leaves soon after budbreak in spring. These mites can also be found on small fruit, often inhabiting the ... [... more]
University of California IPM |
Peachtree Borer
COMMENTS: Apply with a hand spray gun to tree trunk from juncture of main scaffold limbs to soil line. Cover trunk thoroughly using enough liquid so it runs off to form a small puddle at base of tree. Two treatments ... [... more]
University of California IPM |
Peach Leaf Curl
Leaves produced in spring are thickened, curled, and colored red or yellow instead of normal green. Severely affected shoots die. Irregular, reddish lesions are sometimes seen on fruit. Badly diseased leaves fall by ... [... more]
University of California IPM |
Omnivorous Leafroller
Begin monitoring by placing pheromone monitoring traps in the orchard by mid-February in the San Joaquin Valley to establish the biofix for the first flight; biofix is the first night moths are consistently caught in ... [... more]
University of California IPM |
Armillaria Root Rot (Oak Root Fungus)
Before fumigating, remove all infected trees, stumps, and as many roots greater than 1 inch in diameter as possible. Healthy-appearing trees adjacent to those showing symptoms are often infected also. Removal of ... [... more]
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