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Below you'll see everything we could locate for your search of “psyllid”
The average capture rate of psyllids in traps distributed across 23 regions of the citrus-growing area of São Paulo and the Southwest Minas Gerais Triangle in Brazil has fallen for the second consecutive year. The information provided by the Fundecitrus Psyllid Alert platform confirms a downward trend after the peak recorded in 2023. It indicates a scenario of lower pest …
Southeast citrus growers hoping that the Feb. 1 freeze would wipe out the Asian citrus psyllid (ACP) population are going to be disappointed. “What we do know about freezes is a lot of time they will reduce or delay the buildup of many of the populations of pests that we worry about,” said Lauren Diepenbrock, University of Florida Institute of …
The vector of citrus greening disease remains in low numbers in Georgia. University of Georgia (UGA) researchers are hoping the Asian citrus psyllid (ACP) stays that way. Led by UGA entomologist Apurba Barman, UGA Extension is monitoring for the insect in hopes of limiting its migration throughout South Georgia. “The good thing is, so far, we’ve found ACP in only …
By Jawwad A. Qureshi In winter, citrus trees enter a state of quiescence due to lower light and cooler temperatures, which slows their metabolic activity. Therefore, most citrus trees do not produce new shoots during this period. These young shoots are essential for the growth of the Asian citrus psyllid (ACP), Diaphorina citri. The ACP is a small sap-feeding insect …
An adult Asian citrus psyllid (ACP) sample collected from a rural residential property in Imperial County has tested positive for Candidatus Liberibacter asiaticus (CLas), the bacteria that causes huanglongbing (HLB). The ACP sample was collected from a citrus tree on Oct. 30 and was confirmed positive for CLas on Nov. 13. This is the first confirmed CLas-positive adult ACP found …
Recent research has shown that systemic acquired resistance (SAR) sprays can protect young citrus tree flushes from Asian citrus psyllid (ACP) feeding, HLB and citrus canker. ACP is the vector that spreads HLB disease from tree to tree. Researchers with the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) and Bayer Crop Science report that SAR sprays can …
Control of HLB-spreading Asian citrus psyllids (ACP) can be enhanced with dormant winter sprays and a focus on spraying grove perimeters, according to Citrus & Specialty Crop Expo presenter Jawwad Qureshi. Qureshi is an associate professor of entomology at the University of Florida Institute of Food and Agricultural Sciences Southwest Florida Research and Education Center. DORMANT SPRAYS In making the …
Populations of Asian citrus psyllids (ACP) have been found in residential and commercial citrus in Georgia’s Lowndes and Wayne counties during the past two months. ACP spread huanglongbing (HLB) disease. In several places where ACP were found, HLB-infected trees were identified nearby. University of Georgia College of Agricultural and Environmental Sciences (UGA CAES) entomologist Apurba Barman provided details about the …
By Jawwad A. Qureshi The impact of the Asian citrus psyllid continues to intensify through devastation of its vectored huanglongbing (HLB) disease. Although there is no permanent solution for HLB yet, psyllid suppression reduces its impact. Chemical control is the most implemented method. Its strategic use helps reduce psyllid resistance and collateral damage to non-target organisms, including beneficial organisms needed …
A recent article by the São Paulo Research Foundation explains how a potent compound might aid in controlling the Asian citrus psyllid, the vector of citrus greening disease. In São Paulo, greening is managed in part by controlling the psyllid. In an attempt to manipulate psyllid behavior, a team of scientists discovered α-copaene, a molecule present in large quantities in …
The strategies to control the Asian citrus psyllid (ACP) in Florida have evolved over the years. Some practices have come and gone, but one point remains — ACP control is essential. That was the message Lukasz Stelinski made during the June episode of the All In For Citrus podcast. Stelinski, an entomologist with the University of Florida Institute of Food …
During the recent Florida Citrus Industry Annual Conference, Kirsten Pelz-Stelinski, director of the University of Florida Institute of Food and Agricultural Sciences Mid-Florida Research and Education Center, presented evaluations of trunk-injected antimicrobials for HLB management. She said the purpose of these antimicrobial treatments is a short-term or stop-gap approach to keep the current inventory of Florida citrus trees in the …
Fundecitrus researcher Marcelo Miranda recently discussed the effectiveness of insecticides in combating greening-spreading Asian citrus psyllids in Brazil. He presented a lecture at the 50th Expocitrus/46th Citrus Week at the Sylvio Moreira Citrus Center in São Paulo. The information Miranda shared focused on the Citrus Belt of São Paulo and expansion areas. The researcher shared updated results of studies conducted …
Fundecitrus researcher Renato Bassanezi recently emphasized the importance of controlling the psyllid that spreads huanglongbing (HLB, also known as citrus greening) in Brazil. Bassanezi pointed out that with the increase of HLB-spreading psyllids recorded in 2023 and the lack of eradication of diseased trees, controlling the HLB-spreading insect becomes increasingly important. The researcher said there can be no failures in …
The population of HLB-transmitting psyllids in Brazil dropped a significant 40% in 2024 from the prior year. Despite that drop, the psyllid population remains above the average recorded between 2014 and 2019, a period before the insect’s resistance to some insecticides was identified. This data reinforces the need for effective control strategies to prevent new psyllid population increases, according to …
Citrus under protective screen (CUPS) offers benefits that go beyond its initial purpose of Asian citrus psyllid (ACP) exclusion. Steven Callaham of Dundee Citrus Growers Association discussed the advantages and sustainability of this form of citrus production. Rapid tree growth is a major benefit, according to Callaham. “It has been documented that trees inside of CUPS grow about 2.5 times …
Fundecitrus researcher Silvio Lopes and agricultural engineer Orlando Lucato Neto recently addressed how climate variation impacts the development of citrus shoots — the HLB-spreading psyllid’s main food source. They also discussed the incidence of psyllids in Brazilian orchards. Lopes said climate impacts the three components of HLB disease: the citrus plant, the vector insect (psyllid) and the causative bacteria. “The …
Now is the time for Florida citrus growers to implement management tactics to control the Asian citrus psyllid (ACP), the insect that vectors citrus greening, also known as huanglongbing (HLB). ACPs are currently in low populations across Florida’s citrus-producing region. That means growers should act now to protect their crop from the insect’s impact, says Chris Oswalt, University of Florida …
The capture of greening-spreading psyllids in traps in the Brazilian Citrus Belt states of São Paulo (SP) and Triângulo Sudoeste Mineiro dropped 41% in 2024 compared to 2023. The data is part of a survey carried out biweekly by Fundecitrus and made available on the Psyllid Alert platform. The average capture recorded in 2023 was 2.23 psyllids per trap, compared …
A groundbreaking research collaboration led, in part, by Indian River State College Professor Tom D’Elia, has resulted in the successful annotation of the Asian citrus psyllid genome. This marks a significant advancement in the fight against citrus greening disease. The research, published in GigaScience, represents an achievement in both scientific discovery and undergraduate education, featuring 28 Indian River State College …
