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Below you'll see everything we could locate for your search of “psyllid”
Psyllids collected in orchards in four microregions of Brazil’s citrus belt showed reduced susceptibility to insecticides from the pyrethroid and neonicotinoid chemical groups. That information was reported earlier this year by agronomist and researcher Fernando Amaral of the Arthropod Resistance Laboratory at the Luiz de Queiroz College of Agriculture/University of São Paulo (ESALQ/USP). This was the first confirmation of psyllid …
Entomologist Kirsten Pelz-Stelinski recently shared findings from trials on the use of foliar-applied and trunk-injected antibiotics for controlling HLB and the Asian citrus psyllids (ACP) that spread the disease. Pelz-Stelinski is associate center director at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center (CREC) in Lake Alfred. In a May 17 presentation …
The California Department of Food and Agriculture’s (CDFA) Asian citrus psyllid (ACP) quarantine program now requires all harvesters/farm labor contractors (FLCs) to have valid compliance agreements to harvest citrus groves. An FLC is defined as any person or establishment that employs people to perform work related to grove management and/or harvesting commercial citrus fruit. The requirement was announced by CDFA’s …
Lukasz Stelinski for years has promoted saving money on HLB control by spraying for Asian citrus psyllids (ACP) only when their populations reach a certain threshold. The University of Florida Institute of Food and Agricultural Sciences professor still promotes that concept, but with a slightly new twist. TRUNK INJECTION SHOWING PROMISEIn a virtual seminar on April 25, Stelinski advised growers …
California officials have confirmed the presence of HLB-spreading Asian citrus psyllids in a residential area east of Sonoma. The confirmation came following analysis of a survey trap set by the Sonoma County Department of Agriculture. The county department is coordinating with the California Department of Food and Agriculture (CDFA) in responding to the pest’s presence in Sonoma Valley. “Discovery of …
When commercial citrus acreage started migrating north some years ago, the big question was: To what extent would Asian citrus psyllids (ACP) and HLB migrate with the crop? With citrus getting well established in South Georgia, the pest and disease are there, but not yet at devastating levels like in Florida. Johnathan Oliver, an assistant professor of fruit pathology with …
By Lauren Diepenbrock Pest management is an ongoing effort in Florida citrus. Taking advantage of pest life cycles has been shown to be an effective tool for reducing populations of target pests. For many citrus growers, managing impacts of the Asian citrus psyllid (ACP), the vector of huanglongbing (HLB), is part of the annual management plan. As we enter the …
An ongoing study in coastal Southern California citrus groves has found that just over 3.5% of Asian citrus psyllids (ACP) tested are carrying the bacterium that can cause HLB. ACP is the insect vector of HLB. Thus far, 138 of 3,000 adult ACP collected from 15 commercial citrus sites had some level of the bacterium present. The results were reported …
By Kirsten S. Pelz-Stelinski and Lukasz L. Stelinski Managing Asian citrus psyllids (ACP) remains a consideration for growers because psyllids transmit the citrus greening disease pathogen, Candidatus Liberibacter asiaticus (CLas), to newly planted trees. There are several tools that can reduce psyllid populations or mitigate the symptoms of HLB and improve the health of infected trees. However, additional methods that …
Controlling fire ants in groves aids in the control of HLB-spreading Asian citrus psyllids (ACP), entomologist Lukasz Stelinski reported at the Citrus & Specialty Crop Expo. Fire ant control was just one way that Stelinski suggested for growers to manage ACP while reducing costs. The University of Florida Institute of Food and Agricultural Sciences entomologist said ACP populations drop when …
The onset of rains in several regions of Brazil’s citrus belt has made it necessary for growers to pay added attention to citrus greening, Fundecitrus reported. The association of citrus growers and juice manufacturers from the state of São Paulo said the extra attention is needed due to the increase in greening-spreading psyllid populations in this period. Fundectirus reported that …
All commercial citrus producers in California are invited to apply for participation in the Citrus Research Board’s (CRB) California-focused Citrus Research and Field Trials (CA-CRaFT) project. The overarching goal of CA-CRaFT is to demonstrate the effects of additional mitigations on Asian citrus psyllid control within commercial citrus groves across the various citrus-growing regions in California. The project is supported by …
A new airborne insect monitoring system that has been tested in a field trial at Midura, Australia, should assist in monitoring for African and Asian citrus psyllids, which transmit HLB. The trial was conducted by Agriculture Victoria in conjunction with Citrus Australia and had two main purposes. One purpose was to test the sampling ability of the monitoring system against …
By Bryony C. Bonning and Lukasz L. Stelinski Asian citrus psyllids (ACP) transfer the pathogen that causes citrus greening from plant to plant as they feed. After confirmation of citrus greening in Florida in 2005, growers intensified their use of insecticides against ACP to try to stop disease spread. However, this method alone has yielded variable success and increased costs. …
The San Joaquin Valley ACP (Asian citrus psyllid)/HLB Area-Wide Task Force in California is recommending growers participate in a coordinated treatment application in commercial citrus orchards. This recommendation is for orchards located east and south of Bakersfield and includes young, non-bearing trees. The recommendation comes as a result of higher than normal HLB-spreading ACP finds in traps earlier this summer. …
A Fundecitrus study found that the first four stages of orange tree shoot development are the ones that should be most protected against HLB-spreading psyllids. The Brazilian association reported that among the six stages of shoot development, the first four (V1 to V4) are the most attractive to the psyllid and favorable for its feeding and reproduction. Therefore, those are …
An Asian citrus psyllid (ACP) sample confirmed positive for Candidatus Liberibacter asiaticus (CLas) — the bacteria that causes huanglongbing (HLB) — was collected from a commercial citrus grove in the Pauma Valley area of California’s San Diego County. This confirmation marks the first CLas-positive ACP found in a commercial grove in San Diego County and only the second grove detection …
Brazil’s Fundecitrus has launched the Insecticide Rotation Guide for Psyllid Control. Its aim is to help producers control the insect vector of citrus greening, highlighting the importance of proper rotation of products to avoid the selection of resistant psyllids. The resistance of insects and mites to pesticides can compromise the effectiveness of products and, consequently, the control of the pest …
In the latest episode of the All In For Citrus podcast, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) entomologist Kirsten Pelz-Stelinski discussed her research on the Asian citrus psyllid (ACP) and a new grant from the National Institute of Food and Agriculture to further her work. The goal of the research is to use bacteria already present …
By Jawwad A. Qureshi and Azhar A. Khan The Asian citrus psyllid (ACP), Diaphorina citri, invaded Florida over two decades ago. The need to consistently suppress it became apparent soon after detection and particularly after discovering huanglongbing (HLB) disease, which it spreads. Managing HLB depends strongly on vector control to either reduce disease transmission of healthy trees or reinoculation. Single …
