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Below you'll see everything we could locate for your search of “fruit drop”
By Ramdas Kanissery, Fernando Alferez and Ozgur Batuman Herbicides are one of the key inputs necessary for effective management of a wide diversity of weed infestations in citrus crop production. Most weeds in citrus could be controlled by adopting a weed management program that utilizes a combination of herbicides based on their selectivity and compatibility with the crop. This would …
Column sponsored by the Citrus Research and Development Foundation Plant growth regulators (PGRs) are chemicals that increase or decrease plant growth, flowering and/or fruit set. PGRs include some herbicides. This article summarizes research studies on how PGRs might aid in the management of HLB. Although several successful herbicide practices were developed by University of Florida Institute of Food and Agricultural …
By Megan M. Dewdney, Tripti Vashisth and Ariel Singerman In 2017, the damage from postbloom fruit drop (PFD) was lower than the previous three years. This was mainly due to the low rainfall accumulation in late winter and early spring. The long bloom with relatively few flowers at any one time made the decision of when to apply a fungicide …
By Megan M. Dewdney Again in 2016, postbloom fruit drop (PFD) caused widespread problems in Florida groves. There were multiple factors that contributed to the outbreak in 2016. The primary factor was likely the extended bloom that many saw because of a combination of tree stress caused by huanglongbing (HLB) and the very warm winter. Bloom in some groves was …
Geraldo Silva, a scientist with Fundecitrus in Brazil, shared thoughts about postbloom fruit drop (PFD) and its control at a recent seminar in Arcadia. Silva says Brazilians assume that the PFD inoculum is present in groves at all times, because consecutive days of rain can bring on a PFD outbreak 10 years after a previous outbreak. “We can have a …
Postbloom fruit drop (PFD) in recent years has caused many Florida citrus growers as much, or almost as much, anguish as HLB. The Citrus Research and Development Foundation (CRDF) in December approved an extension of PFD research begun in 2016. CRDF Chief Operations Officer Harold Browning discusses PFD and the research. “Progressively the last several years, PFD has increased in …
Timing of fungicide sprays is the key to controlling the postbloom fruit drop (PFD) that caused many Florida citrus growers severe problems this year. That was a central message that University of Florida researcher Natalia Peres delivered at Citrus Expo this summer. In this interview, Peres discusses the keys to proper spray timing, starting with bloom. Peres says longer bloom …
Heavy winds from Hurricane Matthew Friday caused some fruit drop in the Indian River citrus area. But the amount of drop was “not catastrophic,” said Florida Citrus Mutual spokesman Andrew Meadows. “The fact that it stayed offshore helped tremendously,” Meadows said. Some Indian River growers and packers told Mutual that in addition to fruit drop, there will likely be some …
A Citrus Research and Development Foundation (CRDF) Research Management Committee meeting was called on June 29, 2016, to discuss post-bloom fruit drop (PFD) caused by Colletotricum spp. in Florida. In this meeting, it was suggested that there is an opportunity to retrospectively investigate PFD management strategies from 2016 to determine if grower treatment programs led to variable results. A survey …
A report from the U.S. Department of Agriculture Foreign Agricultural Service (USDA FAS) projects world grapefruit and tangerine/mandarin crops will decline in 2024–25 from the previous season. GRAPEFRUIT Global grapefruit production for 2024–25 is forecast down slightly to 6.9 million tons as decreases in Türkiye and the United States more than offset higher production in China. Exports and fruit for …
The 2020–21 orange crop forecast for the São Paulo and West-Southwest Minas Gerais citrus belt in Brazil is 269.36 million boxes. The updated forecast was published Dec. 10 by Fundecitrus and its cooperators. The decrease of 17.36 million boxes represents a 6 percent decline in crop size from the September forecast update. ADVERSE WEATHER CONDITIONSExpected production was significantly hindered by …
By Tripti Vashisth and Megan Dewdney This article discusses the use of gibberellic acid (GA), the naturally occurring plant hormone, on huanglongbing (HLB)-affected trees. The results were generated from a 3-year trial in which Valencia trees were treated with GA in the fall. The outcomes suggest that GA can be effectively used for synchronizing and suppressing profuse flowering without negatively …
A decrease in grapefruit production costs among Indian River growers allowed the average grower to approach the break-even point in the 2015-16 season, a University of Florida economist reports. Ariel Singerman made his report at the recent Florida Citrus Show in Fort Pierce. The report was based on a July 2016 survey of 70 growers representing a majority of grapefruit …
By Ute Albrecht, Gabriel Pugina, Caroline Tardivo, Jasmine de Freitas and Deived de Carvalho The month during which oxytetracycline (OTC) injections are performed can have a considerable impact on fruit size, juice quality and OTC fruit residues. Citrus fruit development can be divided into three overlapping stages: If injections are performed during Stage I, they promote cell division, which increases …
Growers use the citrus under protective screen (CUPS) production system to protect trees from the Asian citrus psyllid, the insect vector of HLB disease. While grapefruit is most commonly grown in CUPS, statistics support the belief that CUPS can be conducive to other types of citrus. “There’s a need to establish the growing requirements and the needs of other varieties. …
Retail sales of orange juice (OJ) and grapefruit juice (GJ) declined for the current season through Feb. 22, according to Florida Department of Citrus (FDOC) Director of Economic and Market Research Marisa Zansler. She reported the following data to the Florida Citrus Commission on March 26: The Florida Citrus Commission serves as the governing board for the FDOC. The FDOC …
The 2024 Commercial Citrus Inventory for Florida shows total citrus acreage of 274,705 acres, down 17% from the 2023 annual survey. The net loss of 57,551 acres is 14,505 acres more than was lost the previous year. New plantings at 4,751 acres are down from 2023, when 6,203 acres were planted. The inventory was released Aug. 29 by the U.S. …
Grapefruit is an unpopular citrus fruit in the South African domestic market, the U.S. Department of Agriculture’s Foreign Agricultural Service (USDA FAS) reported recently. Consequently, only 5,000 metric tons (MT) of an expected 400,000 MT grapefruit crop in 2023–24 is forecast to be consumed in the country. The majority of South Africa’s grapefruit is expected to be exported. The production …
By Tripti Vashisth Huanglongbing (HLB) severity is associated with small fruit sizes and lower fruit numbers at harvest. Moreover, small fruit are more likely to drop and drop earlier during preharvest fruit drop. Unfortunately, management practices suggested to increase fruit size or reduce drop have had mixed results. So, before looking for ways to increase fruit size and number, it …
University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers Mark Ritenour and Flavia Zambon recently provided an update on a large field trial. The project is called Evaluation of Potential HLB Tolerant Grapefruit Rootstock/Scion Combinations in the Indian River District of Florida. A summary of their update follows: The project started as a collaborative effort between the UF/IFAS …
