Damage symptoms of Potato/tomato psyllid in Pumpkin, squash and gourd. The potato/tomato psyllid, Bactericera cockerelli (Sulc) (Hemiptera: Triozidae) has been a major pest of solanaceous crops for decades. This pest can cause damage to crop plants by direct feeding and, as has been recently discovered, by transmitting the bacterial pathogen Candidatus Liberibacter psyllaurous (a.k.a. Psyllid damage hits potato yield. Damage caused by tomato potato psyllid. SPUDMAN: Horticulture New Zealand Potato … Potatoes and tomatoes should be checked each year for developing psyllid problems. Ca. Electron beam (eBeam) irradiation is an environmentally friendly, chemical‐free alternative method that is increasing in use for disinfestation of insect pests. Feeding at immature stages sometimes causes a physiological foliage disorder known as "psyllid yellows" in potatoes. First, feeding by potato psyllid nymphs, and sometimes adults, can result in psyllid yellows, the symptoms of which include stunting and chlorosis of leaves, and in extreme cases plant death; psyllid yellows is believed to be the result of a currently unidentified toxin (Butler and Trumble 2012a). The main direct damage, caused by potato psyllid nymphs when feeding, is known as ‘psyllid yellows’, which results in delayed growth, weakness in the new leaves, chlorosis/reddening or purple colouration of the leaf bases and internodes, and poor-quality fruit. The potato psyllid is a phloem-feeding insect that has an extensive host range but reproduces mainly on potatoes (Solanum tuberosum L.) ... Damage from non-vector psyllids Psyllid nymphs and adults feed similarly to aphids, by probing host plants with their needle- like mouthparts and sucking plant juices. They are small insects that cause damage by infecting plants during feeding. Description of the Pest Damage Management Description of the Pest . Tomato/potato psyllids excrete toxic saliva during feeding that causes what is known as “psyllid yellows” in tomato and potato plants. In warm temperatures (78°F to 82°F or 26°C to 28°C), imma-ture psyllids go through five stages of development in as few as 13 days. Each kind of psyllid feeds on only one plant species or closely related group of plants. Several psyllid species are pests of crops such as citrus, olive, pear, potato, and tomato. Testing was performed at USDA-ARS Laboratory in Prosser, WA. Nobody knows how it got here, but it is a major threat to our horticulture industry, particularly commercial growers of potatoes and tomatoes. However, the nymphs inject inject toxins with their saliva that can cause leaf curling, yellowing or purpling, and small, misshaped tubers. Tomato Psyllid (Potato Psyllid) Bactericera cockerelli; On This Page. Lorsqu'elles se nourrissent sur les tomates, les nymphes injectent une toxine qui cause un symptôme connu sous le nom de « jaunisse du psylle ». Signs of tomato potato psyllid include: • Insects jumping from the foliage when disturbed. Image copyright: Western Australian Agriculture Authority (Dept of Ag & Food, WA) Tomato potato psyllids are most active in warmer months and less so in winter. The Atlantic variety is particularly susceptible to potato psyllids, but all known varieties are susceptible to different degrees. The Potato/Tomato Psyllid Jeffrey Bradshaw, Extension Entomologist Alexander D. Pavlista, Extension Potato Specialist Robert Harveson, Extension Plant Pathologist Outbreaks of potato/tomato psyllid are sporadic but occur suddenly over vast areas of North America, including Nebraska. By JIL GALLOWAY 12:01, Aug 11 2009. Caged potato plants without psyllids (A) and caged plants with psyllids exhibiting potato psyllid damage and zebra chip (ZC) symptoms (B), five weeks after insect release. Pour un insecte de si petite taille, le psylle du poirier peut causer d'importants dégâts. Facebook; Twitter; Whats App; Reddit; Email; MURRAY WILSON/Manawatu Standard. Sampling for psyllids is usually focused on field edges. Monitoring. Potato psyllid damage. Viruses transmitted by aphids to potato include potato virus Y (PVY), potato … Adult potato psyllids are most often sampled with yellow sticky traps or sweep nets. Photo credit: Whitney Cranshaw, www.bugwood.org Sampling. The tomato potato psyllid can carry the bacterium “Candidatus Liberibacter solanacearum”, causing the ‘zebra chip’ disease in potato. Pest description and crop damage Adult psyllids resemble miniature cicadas, while the immature stages are scale-like and mostly sedentary (much more sedentary than aphids) and look like white fly nymphs.
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