Pistachio Pest Management Guidelines
UC agricultural management guidelines for control of pistachio pests. Ferrisia gilli: A New Mealybug Pest of Pistachios and Other Deciduous Crops Relative Toxicities of Insecticides and Miticides Used in Pistachios to Natural Enemies and Honey ... [... more]
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Alternaria Late Blight
UC Management Guidelines for Alternaria Late Blight on Pistachio. 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 ... [... more]
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Western Tussock Moth
UC Management Guidelines for Western Tussock Moth on Pistachio. Western tussock moth overwinters in the egg stage, and larvae begin emerging in March and April. Immature larvae are hairy and black. Mature western tussock moth larvae are large ... [... more]
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Preplant fumigation.
UC Management Guidelines for Verticillium Wilt on Pistachio. Generally Verticillium wilt causes a rapid desiccation and death of one or more scaffolds or the entire tree, usually in late spring or early summer. The first symptoms are interveinal ... [... more]
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Scientific name: Nysius raphanus
The adult false chinch bug is a small bug, about 0.12 inch or 3 mm long. It is gray to light brown in color and looks somewhat like a small lygus bug. The nymph is gray with a reddish brown abdomen. False chinch bugs can occur in high numbers on ... [... more]
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Panicle and Shoot Blight
UC Management Guidelines for Panicle and Shoot Blight on Pistachio. Vegetative and flowering buds that were killed during the previous fall or winter do not emerge in spring. In mid-spring (end of May to June) buds that were partially infected ... [... more]
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Pistachio Seed Chalcid
UC Management Guidelines for Pistachio Seed Chalcid on Pistachio. The pistachio seed chalcid overwinters as a diapausing larva in infested nuts. In spring the larva pupates, and the pupa transforms to an adult that chews a tiny (1 mm) exit hole ... [... more]
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Scientific names: Pin nematode: Paratylenchus hamatus
Nematodes are microscopic, unsegmented, roundworms that live in diverse habitats. Plant parasitic nematodes feed on plant roots by piercing and sucking the cell contents with a spearlike mouthpart called a stylet. They usually live in soil and ... [... more]
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Pathogens: Oidium sp.
Powdery mildew causes leaves to yellow, then brown and die. Infected tissues may be distorted and misshapen. Similar symptoms can be found on rachises, fruit stems, petioles, underside of leaf blades, and young shoots. The disease commonly occurs ... [... more]
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MANAGEMENT Degree-day calculator Degree-day table
UC Management Guidelines for Obliquebanded Leafroller on Pistachio. Obliquebanded leafroller larvae cause two types of damage to pistachios. When populations are high, leaves are tied together, which kills portions of leaves and reduces the ... [... more]
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Green plant bug: Chlorochroa uhleri
The redshouldered stink bug is somewhat triangular in shape and about 0.33 inch in length. It is predominantly green with a narrow red band across the shoulder; sometimes the band is absent. There is also a brown-colored phase, usually found in ... [... more]
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Armillaria Root Rot (Oak Root Fungus)
Armillaria root rot is only occasionally a problem in pistachio orchards. Management of this disease can be difficult and resistant rootstock may offer the best protection. Research indicates that Pistacia terebinthus and P. atlantica x P. ... [... more]
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