Plum Pest Management Guidelines
UC agricultural management guidelines for control of plum pests. Relative Toxicities of Insecticides and Miticides Used in Plums to Natural Enemies and Honey Bees (5/06) Plum Weed Photo Gallery, with Common and Scientific Names (5/06) Year-Round ... [... more]
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Phytophthora Root and Crown Rot
COMMENTS: Applications are made in early spring and fall. Do not apply to trees within 90 days of planting. COMMENTS: For use on nonbearing trees only. Apply as a foliar spray at 60-day intervals. Varies with method of The most effective ways to ... [... more]
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Scientific name: Xylomyges curialis
Citrus cutworm has only one generation per year. The grayish citrus cutworm moths emerge from early January to the end of April, with peak emergence during March. After mating, female moths lay their round, milky white eggs mainly on the ... [... more]
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Scientific name: Chrysobothris mali
UC Management Guidelines for Pacific Flatheaded Borer on Plum. Feeding by Pacific flatheaded borers may cause a portion of the bark to die or may girdle and kill young trees or scaffold limbs. In older trees the best way to avoid infestations is ... [... more]
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Scientific name: Archips argyrospila
The fruittree leafroller overwinters in egg masses on scaffold limbs and twigs and emerges in spring as larvae. Larvae are dark green caterpillars with black heads. When disturbed, they wiggle backwards and drop to the ground on a silken thread. ... [... more]
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Leaf Curl Plum Aphid
The leaf curl plum aphid is often found inside curled leaves. It is shiny and varies considerably in color from green to brownish green or brownish yellow. This aphid overwinters in the egg stage near the base of buds. In spring it rapidly builds ... [... more]
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General Properties of Fungicides Used in Plums
Information about Information about General Properties of Fungicides Used in Plums. Adaskaveg, J. E., B. A. Holtz, T. J. Michailides, and W. D. Gubler. 2006. Fungicide Efficacy and Timing for Deciduous Tree Fruit and Nut Crops and Grapevines ... [... more]
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Green Fruitworms
Green fruitworms include several species of caterpillars, all of which are pale green, often with whitish stripes down each side of the body and a narrow stripe down the middle of the back. Most species pass the winter as pupae or adults, and ... [... more]
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PETAL FALL and AFTER
On plums, larvae feed on leaves and buds during bloom and also on the surface of fruit in midsummer. In some cases they cause severe damage as well as contamination with their excrement. Parasites of obliquebanded leafroller include Macrocentrus ... [... more]
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Armillaria Root Rot (Oak Root Fungus)
Avoid planting plum orchards where forest or oak woodland has recently been cleared or where there is a history of Armillaria root rot. All stone fruit rootstocks are susceptible to Armillaria root rot but some, such as Marianna 2624, are less ... [... more]
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Relative Impact of the Timing of Pesticide Applications ...
Information about Relative Impact of the Timing of Pesticide Applications on Natural Enemies in Plum. H = high, M = moderate, L = low, - = no information 3 IGR = insect growth regulator (Dimilin, Intrepid, Esteem, Seize) 7 inseason use of OPs on ... [... more]
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Bacterial Canker
Planting trees that are budded or grafted about 32 inches above the root crown can help suppress bacterial canker infections. Bacterial canker tends to mostly affect weak trees, so any management practice that improves tree vigor (e.g., lighter, ... [... more]
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