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Below you'll see everything we could locate for your search of “biological control”
Repeated evaluations throughout California showed “a massive decline – greater than 70%” in HLB-spreading Asian citrus psyllid (ACP) densities since the inception of a biological control program, a researcher reported recently. Mark Hoddle said the University of California, Riverside (UCR) and the California Department of Food and Agriculture (CDFA) turned to biocontrol because insecticide spraying wasn’t adequately controlling the psyllid. …
Lebbeck mealybug (Nipaecoccus viridis) was first identified in Florida citrus in 2019 in Highlands County. It has now been documented in commercial citrus groves in 11 counties and in dooryard citrus plantings in two counties. While lebbeck mealybug can feed on most of the above-ground parts of a citrus tree, it is most damaging in the canopy, where it feeds …
By Jawwad Qureshi Managing the Asian citrus psyllid (ACP) is critical because of its role in spreading huanglongbing (HLB). Biological control is one method for ACP control. It is essential for developing integrated and sustainable pest management strategies. Biological control has always been a vital component of citrus pest management in Florida; understanding its contribution to the mortality of ACP …
In the latest All In For Citrus podcast, Ozgur Batuman talks about his research into biological control of the Asian citrus psyllid (ACP). Batuman is an assistant professor at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Southwest Florida Research and Education Center. ACP control is necessary for management of citrus greening disease, or huanglongbing (HLB). Batuman’s …
Biological control can have a significant impact on Asian citrus psyllid (ACP) and citrus leafminer (CLM) populations in Florida, a researcher reported in a Nov. 19 virtual meeting. Jawwad Qureshi, associate professor of entomology with the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS), also discussed some cultural and chemical controls that work on the pests. ACP Qureshi, …
Researchers Marcelo Miranda and Haroldo Volpe with Brazil’s Fundecitrus discussed control of the HLB-spreading psyllid during a recent visit to a South African research symposium and accompanying events. During the Citrus Research Symposium in Drakensberg, Miranda discussed studies developed at Fundecitrus on the management of the HLB-spreading psyllid (Diaphorina citri). In South Africa, HLB is caused by a bacteria different …
Agriculture officials and researchers in California have drastically reduced populations of HLB-spreading Asian citrus psyllids (ACP) through biocontrol measures. Now they’re working on ways to control other insects that are intent on protecting the ACP — Argentine ants. Mark Hoddle, professor of Extension in biological control at the University of California, Riverside, Department of Entomology, explained the ACP/Argentine ant dynamics …
A wider diversity of weeds and insects in organic Mexican citrus orchards compared to conventional orchards aids in control of the HLB-spreading Asian citrus psyllid (ACP/Diaphorina citri), a Mexican scientist reported recently. HLB is also known as citrus greening disease. “In the organic orchard, there are almost double the species of weeds compared to the conventional orchard,” Carlos Castillejos Cruz …
HLB, spread by the Asian citrus psyllid (ACP), has been the scariest and most destructive disease that Florida citrus growers have ever faced. So, it was fitting that entomologist Jawwad Qureshi made a virtual presentation about ACP/HLB on Halloween, often considered the scariest day of the year. Qureshi, a University of Florida Institute of Food and Agricultural Sciences associate professor, …
By Jawwad Qureshi Management of the Asian citrus psyllid (ACP, Figure 1) is critical because it is responsible for spreading huanglongbing (HLB) disease. Although HLB is established in Florida, it continues to spread through ACP feeding in already infected trees and by infecting newly planted young trees. Some ACP control occurs naturally in the environment by beneficial organisms such as …
By Lukasz Stelinski Ants can be involved in mutualistic relationships with honeydew-producing hemipterans. Ants provide protection against their natural enemies, and in return, hemipterans reward ants with honeydew. Such mutualism may affect population regulation of hemipterans by third trophic level predators. However, current knowledge regarding the effects of this food-for-protection mutualism of ants with Asian citrus psyllid (ACP, Diaphorina citri) …
By Ramdas Kanissery and Mahesh Bashyal Using compost and soil amendments is beneficial to Florida citrus groves. Florida soils are sandy and have a low organic matter and cation exchange capacity. Adding compost and organic amendments (e.g., humic acid) can enhance the soil’s ability to retain water and nutrients. These practices can also boost soil microbial activity and improve soil …
The severe impacts of recent storms are layered on top of the complex set of challenges already facing U.S. citrus growers—especially in Florida. From high input costs to domestic supply shortages, the unmatched devastation caused by citrus greening disease, and now the recovery efforts needed post-hurricane, growers need holistic solutions–and they need them fast. The good news is that breakthrough …
Emilie Demard is working to control mites and other pests that damage fresh grapefruit growing as citrus under protective screens (CUPS) at the Indian River Research and Education Center in Fort Pierce. “I look at biological control — in this case, predatory mites controlling pest mites to minimize the need for agrochemicals,” said Demard, a Ph.D. entomology graduate with the …
Fire ant management is essential to the long-term sustainability of citrus groves. This is particularly true for young trees still trying to develop root systems, said Xavier Martini, assistant professor of entomology at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) North Florida Research and Education Center (NFREC). Martini spoke on insect management at the recent UF/IFAS …
Disease management ranks high on the list of every Florida citrus grower’s agenda. Tools are available for producers to combat citrus diseases like greasy spot, melanose, scab, foot rot and citrus canker. But growers can never have enough tools, especially when disease resistance is a real possibility in the future. STOCKING THE TOOLBOX“To grow citrus trees and produce quality fruit …
By Mark A. Ritenour, Jiuxu Zhang, Liliana M. Cano and Megan M. Dewdney The decay of fresh citrus fruit in Florida is usually caused by fungal pathogens that grow and develop in the hot and wet conditions typical to the state. While green and sometimes blue Penicillium molds and sour rot can cause Florida fruit to decay, the subtropical conditions …
Citrus greening disease appears to be a problem for the foreseeable future for Florida growers. But what if growers could improve nutrition so trees could better cope with the disease? Scientists at Douglas Plant Health believe biofertilizers have that capability. “Think about it from a human health standpoint,” says Marcus Jones, vice president of research and development at Douglas Plant …
Lucerne (also known as alfalfa) interplanting improved citrus gall wasp (CGW) control in Australia’s New South Wales (NSW). The interplanting is practiced by some citrus growers in NSW to suppress weeds, reduce soil compaction and improve soil fertility. Jianhua Mo of the NSW Department of Primary Industries addressed the matter; a summary of Mo’s comments follows. One possible explanation is …
By Ramdas Kanissery Adjuvants (derived from Latin, adiuvare: to aid or help) are materials added into an herbicide spray solution that improve handling, performance and crop safety. To be effective, an herbicide must overcome certain environmental and biological obstacles before entering and acting in the weeds. For example, environmental conditions like hot and dry weather will result in a thicker …
