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1
Citrus General Discussion / Citrus Greening Spreads To Alabama, US
« on: June 22, 2017, 09:30:35 PM »
A highly contagious bacterial disease that seriously threatens the U.S. citrus industry has been found for the first time in Alabama.

http://www.freshplaza.com/article/177607/Citrus-greening-spreads-to-Alabama,-US

2
Citrus General Discussion / The Tough Gold Nuggget
« on: June 22, 2017, 09:19:20 PM »
The Florida Nursery, Growers & Landscape Association Citrus Nursery Division held a meeting in Apopka recently. Part of the sidebar discussions among attendees included the amazing health and vigor of the ‘Gold Nugget’ mandarin.

NVDMC originally brought the ‘Gold Nugget’ to Florida in hopes of finding an alternative to the ‘Honey Tangerine’ for the late season. As is typical with new mandarins in Florida, all of the early trees were grafted onto ‘Cleo’ liners. The trees grew well and looked decent, but did not produce enough fruit to be commercially viable.

As HLB continued to wreak havoc on old-line varieties, the ‘Gold Nugget’ seemed to hold its own. The worse everything else looked, the better the ‘Gold Nugget’ looked. The oldest planting of ‘Gold Nugget’ mandarins was at Conserv II. At the time this article was written, the front-end loaders were closing in on the block, but the trees were still standing. A small group of nursery owners drove out to see the trees. The trees remained dark green with a thick canopy, despite 14 to 18 months without irrigation, pest control, or nutrition.

NVDMC recently converted its ‘Gold Nugget’ contract from trial only, to also include dooryard and commercial production. This variety is a natural fit for dooryard growers. The jury is still out on its commercial utility in Florida, but more growers could be working with it soon.




http://www.freshplaza.com/article/177510/Citrus-variety-Gold-Nugget-becoming-more-appealing-for-Florida-growers

4
Citrus General Discussion / Citrus & Spinch Genes
« on: June 12, 2017, 10:19:54 PM »
......Eyrich stressed that the tristeza virus employed is merely a vehicle for delivering the spinach protein to the tree’s vascular system or phloem.

When the spinach protein comes in contact with the greening bacteria, “it puts a hole in the bacteria cell wall, the bacteria cell leaks out its contents and dies,” Eyrich said.

And, unlike the tristeza virus that debilitated trees in the late 1990s, this form “can’t be transmitted from tree to tree by an aphid,” Eyrich said.

No new, foreign genes are inserted into the tree, which means it isn’t genetically modified, Eyrich said.

Same goes for the fruit. Early tests don’t detect any sign of the spinach protein in the fruit.......

http://www.news-press.com/story/money/2017/06/09/citrus-industry-looks-help-turn-corner-citrus-greening-fight/376749001/

5
One of the largest growers of Finger Limes and Australian Blood limes (cross between Finger Limes and Burmese Lime with 1400 trees.

http://www.freshplaza.com/article/176999/AU-Increased-exposure-for-the-Australian-Blood-lime

6
University of Florida researchers may have come a step closer to finding a treatment for a disease called Huanglongbing, or citrus greening, that has been decimating citrus trees in the state. In work published this week in mSphere, an open access journal from the American Society for Microbiology, the investigators describe identifying a small protein from one bacterium living in Asian citrus psyllids—the flying insects that spread the disease as they feed on the trees—that can "cross-talk," moving to another bacterium within the insects to silence so-called "prophage genes" containing viral material in the second bacterium, helping prevent an insect immune reaction that would likely be detrimental to both bacteria.

https://phys.org/news/2017-06-protein-halt-citrus-tree-disease.html

7
Cold Hardy Citrus / Prison Cold Hardy Citrus Grove
« on: June 06, 2017, 10:19:25 PM »
Mitchell County Correctional Institute, Georgia has planted the first correctional facility orange grove.   The grove consists of 10 trees each of 10 different more or less cold hardy cultivars.

Changsha Tangerine (Sweet Frost)
Bruce Grapefruit (Pink Frost)
Ichange Lemon (Grand Frost)
Cara Cara Navel
Frost Owari Satsuma
Nules Mandarin
Meyer lemon
Murcot Mandarin
Kieffer Lime
Liquid Gold Grapefruit

All 100 trees are grafted upon trifoliate stock. Some of these varieties I have never heard of.  The trees will be cared for by the inmates, and if all goes well the grove can be expanded.  Micro sprinkles for frost protection and irrigation was also donated for the venture.   Wish them luck.

8
In the 2000-01 citrus season, Florida had 106 citrus packinghouses operating across citrus belt.  Each of the top 24 packinghouses sold more than 1 million cartons of fresh citrus that season.  The 2016-17 season saw only 26 packinghouses operating in Florida – All due to Citrus Greening Disease.

http://www.theledger.com/news/20170530/fla-packinghouses-struggle-to-maintain-supplies-amid-greening

9
A new step in food safety. Chinese website Alibaba offers food counters that immediately measure the amount of nitrate in your fresh produce, and knows whether your food has been exposed to radioactive radiation. For approximately 100 dollar

11
Citrus General Discussion / Biostimulation Foliar Sprays
« on: May 20, 2017, 02:36:29 PM »
I am reading the text book titled "Advances In Citrus Nutrition". There are several chapters on biostimulation sprays.  Biostimulation is the foliar spray application of items such as marine (fish oils), seed extracts, plant tissues (sea weed), and of all things meat industry wastes.  Meat foliar sprays contains large amounts of amino acids and peptide chains which are valuable to the tree's growth. What are biostimulators ?  They are  inorganic and organic substances or its mixtures that positively affect plant development or other physiological processes in plants.

12
Citrus General Discussion / Clemenluz
« on: May 19, 2017, 11:55:54 AM »
Clemenluz is another mutation of the Clementine.  Have be harvested a month earlier to aavoid frost.

http://www.freshplaza.com/article/175662/Chile-The-Andes-1cv.-Clemenluz-is-a-new-clementine-protected-variety

13
Citrus General Discussion / Clemenluz - Another Clementine Mutation
« on: May 19, 2017, 11:35:25 AM »
Clemenluz is a mutation of the Clentine that ripens a month earlier - harvest before frost.

16
Citrus General Discussion / Global Orange Production
« on: May 12, 2017, 11:32:10 AM »
According to estimates of the USDA, 49.6 million tonnes of citrus will be harvested worldwide this 2016/2017 citrus year.

17
I have a Seville Sour orange that I planted from seed.  It is now 8.5 feet in height and after a long wait is producing fruit.  The node count on the seed grown tree reached maturity at about 5-feet.  Fruit production starts at 5-feet and goes to the very top of the tree.  There is no fruit, and will never be any fruit, below the 5-foot mark.  The lower portion of the tree, that portion below the required node count for maturity, will forever be immature.  The node count where maturity begins for a Seville Sour orange must be approximately at 5-feet, at least it was for this particular tree, and is probably pretty much the same for this variety. . 

18
Since its founding in 1935, the Citrus Department has financed its operations from the citrus growers’ self-imposed tax on their output. Last year, however, with crop loads severely diminished by the fatal greening disease, the department for the first time in its history asked lawmakers for help from the state’s general fund. The move signified how desperate the citrus industry has become since the greening plague took root.
Yet, per The Ledger, we recently witnessed an example of the growers demonstrating again the willingness to look after their own.
The Lake Wales-based Florida Natural Growers, a cooperative of 14 major Florida citrus producers, is offering $13.5 million in seed money to incentivize growers to seed new groves.
The Planting Incentive Program offered $10 million when it was originally conceived in 2014. It was so popular that Florida Natural added another $1 million a year later. As evidence of the demand it generated, only 60 percent of the orange trees funded three years ago have been planted because of a dearth of young trees.
The initiative will pay $10 per new tree, which covers about a quarter of the cost to plant a tree and bring it to fruit-bearing maturation. Still, that’s far better than nothing.
Florida Natural also has expanded the program to pay for grapefruit trees, groves of which are more depleted on a percentage basis than oranges trees, as well as lemon trees, which are largely unaffected by greening and are seen as an alternate to either of the other fruits. Thus, $10 million will be set aside for orange trees, $3 million for grapefruit and $500,000 for lemon.
The co-op will not pay to replace dead trees. That would counter the program’s purpose, which is to spur investment in new trees, which are sorely needed. Since the onset of greening, about one-third of Florida’s mature orange trees have perished, joined by roughly half the grapefruit trees.

In exchange for the cash, the recipients agree to provide their crop exclusively to Florida Natural for juice processing.
“It’s great news for the Florida citrus industry,” Mike Sparks, CEO of Florida Citrus Mutual in Lakeland, the growers’ trade group, told The Ledger recently. “It shows the private sector is willing to offer incentives to replant, and it ties in great with public incentives.”
“No one program is a silver bullet,” Sparks added. “It’s going to take a combination of incentives to get the Florida citrus industry back on its feet, which will take a few years.”

http://www.newschief.com/opinion/20170507/our-viewpoint-revived-wrinkle-in-war-against-citrus-greening

19
Citrus General Discussion / National Orange Juice Day
« on: May 04, 2017, 11:56:42 AM »
May 4 recognizes National Orange Juice Day, America’s most popular breakfast drink. People have been waking up to a glass of orange juice for many years and enjoying the health benefits it gives them.

20
Citrus General Discussion / Mealy Bugs
« on: May 03, 2017, 05:40:45 PM »
This is the time of year that Mealy bugs make a home in the calyx of the  new young fruit.  For smaller container trees, a squirt bottle filled with a horticultural oil (HO) solution works well, even a small brush works well.  For larger trees a sprayer with HO gets rid of them.   

22
"I think we’re going to see a rapid expansion of the Citrus greening disease in Southern California in this coming year,” Grafton-Cardwell Research Entomologist at UCR Riverside said in a speech this week. .

23
Some companies market their food product as “non-GMO” to create a nonexistent distinction that gives them a competitive advantage (sometimes at a premium price). For example, Tropicana Orange Juice includes the “Non-GMO Project” seal on its package, yet its sole ingredient is oranges, and there are no commercially grown, genetically engineered oranges. Every brand of orange juice is naturally “non-GMO,” provided the only ingredient is oranges.

https://www.geneticliteracyproject.org/2017/04/21/no-gm-oranges-tropicana-deceiving-consumers-non-gmo-label/#.WPpNlkqWIip.twitter


24
In 10 years, Florida's round orange production fell from an average 342 boxes per acre down to 163 boxes per acre. That is a 52% reduction.
The report also noted break-even or negative cash flow groves are selling at discounted prices. The University of Florida benchmarks the typical all-in production costs for processed oranges is $2,235 per acre. Given that, the break-even number for a grove would be 225 boxes per acre receiving $2.28 per pound solids delivered (assuming 5.86 pound solids per box).

http://www.freshplaza.com/article/174155/Retail-prices-for-Floridian-orchards-shows-grim-picture

25
Inspectors from the California Department of Food and Agriculture are going home-to-home inspecting trees after the devastating citrus disease Citrus Greening was detected in La Habra.

http://abc7.com/news/deadly-citrus-disease-detected-in-oc/1885842/

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