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Below you'll find a list of all posts that have been categorized as “HLB Management”
Brazil’s Fundecitrus recently published a scientific article explaining why HLB is so difficult to control. “Why is it so difficult to control huanglongbing (HLB)? Point of view” was published by the journal Scientia Agricola (Agricultural Science). It was authored by Fundecitrus researcher Renato Bassanezi and post-doctoral researcher Isabela Vescove Primiano, in collaboration with the late professor Armando Bergamin Filho of …
By Michael Rogers It has now been two decades since huanglongbing (HLB), or citrus greening, was first detected in Florida. That announcement in August 2005 changed everything for the Florida citrus industry. At the time, Florida citrus was still a global powerhouse. Less than a year earlier, HLB had been confirmed in Brazil, and we were aware of its devastating …
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 …
Mountain Valley MD Holdings Inc. (MVMD) recently reported positive results from ongoing citrus field trials in Brazil for its Agrarius™ signaling technology. Agrarius™ is designed to organically increase crop yields, reduce fertilizer and pesticide usage and enhance plant health. MVMD has been working with a client-directed third-party agricultural partner, FARM ATAC, in Brazil to assess the impact of the application …
Fundecitrus recently held an international seminar dedicated to citrus greening. The event had approximately 150 participants and featured experts from China and Brazil. GENOME EDITING Xuefeng Wang, from China’s Southwest University’s Citrus Research Institute, highlighted his interest in building a solid partnership in the area of genome editing. He said his group has already identified promising genes that can contribute …
As the end of the year approaches, now is a good time to look back at what has been learned about huanglongbing (HLB) disease over the last 20 years. In the Citrus Industry section of the December issue of Specialty Crop Grower, Michael Rogers, Citrus Research and Education Center director, provides a comprehensive review of the progress made in fighting …
Sponsored Content Question: Are third-party research trials showing good improvement in HLB symptoms with the use of ReMedium TI®? Answer: There have been a number of research trials performed by the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) and U.S. Department of Agriculture-Agricultural Research Service (USDA-ARS) over the past couple of years. ReMedium TI® results have been …
The first half of November saw the most sprouting ever observed in Brazilian citrus by the Psyllid Alert, reaching 37.4%. This scenario raises an alarm for citrus growers, since the increase in sprouting is directly linked to the growth of the psyllid population, the insect vector of huanglongbing (HLB) disease. HLB is also known as citrus greening. According to the …
The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center (CREC) citrus breeding team hosted a field day on Nov. 19 at the UF/IFAS Eagle Lake Block. The Eagle Lake Block is a 30-acre property that was gifted to CREC as part of the Jim Hughes estate. The grove tour featured several selections being …
A University of Connecticut researcher recently made advancements in citrus gene editing techniques to reduce the drawbacks of traditional methods. The researcher is Yi Li, professor of horticultural plant breeding biotechnology in the College of Agriculture, Health and Natural Resources. BACKGROUND Scientists employ genome-editing technologies to precisely modify a plant’s own genes, either by inactivating or activating specific target genes …
The Florida Department of Agriculture and Consumer Services recently approved TJ BioTech’s request for a Section 24(c) registration related to a fourth year of use of the oxytetracycline (OTC) product ReMedium TI®. The product is a systemic injectable antimicrobial for the control or suppression of huanglongbing (HLB) disease in citrus. The Section 24(c) registration is a special local need registration. …
Sponsored Content Question: Previous questions have been asked about increases in yield and quality of the citrus crop as groves begin to recover from HLB. Why does it take additional time to get quality to improve? Answer: The ability of any crop to produce both high yield and high quality is an agronomic function of a plant’s ability to intake …
By Taylor Livingston and Tripti Vashisth Preharvest fruit drop is a major concern for Florida citrus growers, especially in groves affected by huanglongbing (HLB). Environmental stressors such as drought, flooding and cold snaps further accelerate fruit drop and tree decline. Recent field trials in Central Florida evaluated the use of plant growth regulators (PGRs) — specifically gibberellic acid (GA3) and …
University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers are putting genes from a non-citrus plant into Hamlin oranges to develop citrus plants that fight huanglongbing (HLB), also known as citrus greening disease. The newly developed plant is called NuCitrus. It’s based on a protein called Arabidopsis NPR1 (AtNPR1). The new citrus shows strong tolerance to HLB, but not …
By Fernando Alferez and Divya Aryal Brassinosteroids (BRs) are a class of plant growth regulators with several effects on plant growth and development. They engage in crosstalk with other hormones like auxin, gibberellins, ethylene and abscisic acid, influencing all plant growth and development aspects including fruit maturation, but the timing of this effect appears to be short and tightly regulated. …
Sponsored Content Question: There has been discussion that HLB recovery will be seen in yield first and quality second. Is that happening? Answer: It is still too early to tell exactly what the numbers will look like for the 2025–26 harvest. However, early harvest reports are coming in, and they seem quite encouraging. There is a report on a grove …
As every Florida citrus grower knows, it has been difficult to grow trees and fruit profitably since huanglongbing (HLB) disease was discovered in the state in 2005. Soon after the disease was discovered, officials determined it couldn’t be eradicated largely because the Asian citrus psyllids (ACP) that spread it showed up years earlier and were in virtually all citrus-producing regions. …
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 …
Sponsored Content Q: With the 2025–26 trunk-injection season near, what steps can be taken to make the ReMedium TI® injections the most effective for increased fruit yield and quality? A: The basics of the injection are still the same: There is one factor that is new in the injection realm. Research conducted at the University of Florida shows that injection …
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 …
