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Below you'll see everything we could locate for your search of “tip of the week”
By Lukasz Stelinski Vector control is considered a basic component of HLB management even under high disease incidence scenarios. A recent study compared the effects of three different economic thresholds (ET-0.2, ET-0.5 and ET-1.0) and one calendar-based application schedule on the incidence of Asian citrus psyllid (ACP) and beneficial species in plots of commercially grown citrus. The study also examined …
Sunkist Growers is celebrating its 130th anniversary and California roots with Sunkist Citrus Day on March 1. In anticipation of the day, the fresh citrus cooperative discussed its history and products. Sunkist began in 1893, making it the longest-standing agricultural co-op in the United States. Sunkist’s first advertisement was published in Des Moines, Iowa, in March 1908 to promote the California …
By Ajia Paolillo As the season moves from winter to spring, the irrigation requirements of citrus trees change. Typically, February through May is the drier time of year in Florida with low rainfall amounts in most areas. However, during this period, the trees are actively producing leaves and flowers, setting fruit, and pumping resources to the growing fruit during cell …
By Megan Dewdney For foliar diseases, 2022 started off easily with limited outbreaks in Florida because the spring was dryer than average. The same La Niña weather pattern responsible for the dry conditions of the last two springs is predicted to occur again this winter into early spring. The weather pattern is then predicted to become a neutral pattern with …
Southeast citrus trees were undoubtedly impacted by multiple days of sub-freezing temperatures during Christmas week. An exact understanding of the impact will not be known for another couple of months, believes Jonathan Oliver, University of Georgia (UGA) assistant professor and small fruits pathologist. “The freeze was significant, but you never really know for sure until the plants start to flush …
By Jude Grosser, Fred Gmitter and Maria Brenelli The new OLL (Orie and Louise Lee) series of sweet oranges (OLL-4, OLL-8 and OLL-20) are very high-quality processing sweet oranges that generally produce higher soluble solids and better juice color than Valencia. OLL trees are more vigorous than Valencia, and anecdotal evidence suggests they are slightly more HLB-tolerant than Valencia. Trees …
By Megan M. Dewdney Postbloom fruit drop (PFD) is a sporadic flower disease. It is primarily caused by the fungus Colletotrichum acutatum. While infections only occur on flowers, the fungus is present on trees throughout the year. It survives by producing resting structures on leaves and stems. How the inoculum survives multiple years between infections is still unclear. The fungus …
By Ajia Paolillo Editor’s note: This article grants one continuing education unit (CEU) in the Core category toward the renewal of a Florida Department of Agriculture and Consumer Services restricted-use pesticide license when the accompanying test is submitted and approved. As a certified restricted-use pesticide applicator, it is your responsibility to use pesticides safely, not only for yourself but for …
By Larry Duncan and Fernando Alferez Newly planted citrus trees are far less tolerant of pests and diseases than when mature. Sting nematode (Belonolaimus longicaudatus) was not considered a serious economic threat to Florida citrus until successive hard freezes in the 1980s caused widespread replanting of groves. Patches of stunted, declining trees caused by the irregular distribution of sting nematodes …
By Lauren Diepenbrock Pest management is a year-round challenge in Florida citrus. With the warm climate, pests are at the ready as soon as plant resources are available to them. With knowledge of insect and mite biology in relation to tree phenology, plans can be developed to protect fruit and maintain productive citrus trees. Populations of some highly problematic pests …
By Clara Diekman, Micah Gallagher, Taylor O’Bannon and Michelle Danyluk Compliance dates for all water associated with the Produce Safety Rule (PSR, Subpart E) has previously been delayed, pending completion of the rule. The U.S. Food and Drug Administration (FDA) announced in the fall of 2022 that postharvest water requirements in the PSR will be enforced on large farms beginning …
By Tripti Vashisth Since 2021, a number of Florida growers have adopted the use of gibberellic acid (GA) in their grove management programs. This widespread adoption is due to the fact that GA-treated trees show canopy rejuvenation and reduction in preharvest fruit drop, resulting in improved yields. The research on Valencia shows that the effect of GA improves over time. …
By Lorenzo Rossi With no cure for HLB available, searching for alternative mitigation strategies is an urgent priority for a sustainable citrus industry. Interest has grown regarding the use of organic amendments to improve the fertility of Florida native soils. Although hardwood mulch applications have been demonstrated to improve both tree health and soil fertility in other fruit industries, little …
Temperatures in the teens walloped the South Georgia-North Florida citrus region over the Christmas weekend, destroying fruit still on trees and damaging trees to some extent. “We got as low as 15, but most places it hovered around 18 degrees,” reported Lindy Savelle, president of the Georgia Citrus Association. “All fruit left on trees appears to have turned to mush …
By Rhuanito S. Ferrarezi and Mark A. Ritenour Two independent trials were conducted under a commercial citrus under protective screen (CUPS) system. The first trial was to investigate canopy management strategies to improve fruit yield and quality of mandarins. Canopy management is essential for CUPS since the environment stimulates vigorous vegetative growth, posing operational challenges to mechanization that can be …
With temperatures plummeting over Christmas weekend, the latest episode of the All In For Citrus podcast is well timed. Chris Oswalt, a University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) citrus Extension agent covering Polk and Hillsborough counties, joined the podcast to discuss tips on preparing for freeze events. Oswalt encouraged growers to find a reliable source of …
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 …
By Ramdas Kanissery Florida citrus growers face weed management problems throughout the year because of conditions that favor rapid weed growth in groves. A weed-free tree row is desired in a citrus grove to minimize weed competition with trees. Hence, chemical weed control using post-emergent, systemic herbicides like glyphosate has become a vital production practice in the Florida citrus industry. …
By Mongi Zekri For maximum efficiency of a grove, it is essential that every location is occupied by a tree and that every tree is healthy. Prompt replacement of dead and declining trees means higher average long-term returns from the grove. If the declining trees remain in the grove, they keep getting weaker and yield less fruit each year. Therefore, …
Regular flower bud advisories from the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) were restarted Nov. 21 and will be provided every other week through early spring. Associate Professor Tripti Vashisth provides the advisories. The advisories provide critical information about the intensity and time of citrus blooms. Growers use this information to determine when to spray for …
