2008 was much too full to get it all into one post so I've decided to do a couple more looking back over the year.
In early November I drove up to the University of Georgia Coastal Plains Experiment Station in Tifton to attend the Southeastern Citrus Exposition. It's an annual event held in various states and attended by citrus enthusiasts from all over the country. This time it was close enough that I could day trip the thing so off I went.
I left the house at five a.m. driving through on and off rain all the way up and one truly torrential downpour between Gainesville and Alachua to arrive at the confence center at 8:00 a.m. when the registration opened. When I got there the plant sale in the parking lot had already started.
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Naturally being a citrus exposition there was a lot of it on offer but there were also many other plants as well such cycads, palms, deciduous trees and a nice selection of camellias.
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I got close to them just long enough to snap that shot then kept my distance before I lost all reason and started buying as I really like camellias.
After nearly spending myself broke I finally made my way inside to register and settle in for a long day of all things citrus.
There were some good speakers. Monte Nesbit from the Auburn University, Gulf Coast Research Station in Fairhope, AL. spoke about their continuing efforts to bring back the commercial satsuma industry in southern Alabama and the rest of the upper Gulf Coast. Before commercial citrus became as big as it is today in penninsular Florida there used to be quite a few satsuma groves across the upper Gulf Coast. They're more cold hardy than most sweet oranges and need cooler fall temperatures to develop their best flavor.
Dr. Wayne Dixon with the USDA spoke about the citrus greening disease problem that has broken out in Florida, Brazil and now possibly California. This is a potentially devastating disease that first renders the fruit inedible then ultimately kills the tree. If we cannot come up with a successful management plan it has the potential to eliminate citrus as a commercial crop in Florida. Unfortunately the disease is spread by a small insect called the Asian Citrus Psyllid. It looks like a small moth and has proven to be easily transported by both man and weather so that now it has been found in nearly every Florida county, Georgia, South Carolina, Alabama, and Southern California (by way of Mexico they think). Complicating matters further is that the disease can remain latent up to four years before the first visible symptoms in the tree occurs which in practical effect means that if the psyillid has been found in a given area it's very likely the disease is there by now as well, but not yet visible.
There doesn't seem to be any way to stop the spread of the insect and eradication of the disease is impossible so management is the only alternative. The only upside of all of this is that there is now a twenty million dollar research effort underway here in Florida to come up with that management plan. There are experiments using salicylate compounds to treat the disease, but they're still too preliminary to know if they're going to amount to anything. And there are some indications that some types of guava may deter psyllids from trees they are interplanted with, but those experiments are still in early days as well. I'm personally going with the plan to keep on keeping on with what I'm doing until they come up with some sort of management or defense or until the disease kills all of my trees and I have to move on to other types of fruit. The situation may look bad, but we're not dead yet.
After Dr. Dixon we heard from Jerry Selph, retired from the Helena Chemical Company down to Indian River county in Central Florida on identifying and managing common citrus pests and diseases. Some very good photos and management advice. For a chemical company man he was not really big on the use of pesticides, recommending using them only to the extent that was necessary to bring an out of control problem back to where naturally occuring predators could deal with them. Over spraying was he said one of the best ways of turning a difficult management problem into an impossible one when the naturally occurring predatory insects had been killed off.
The last speaker was Dr. Jack Hearn, Retired USDA Citrus Scientist. For anyone interested in ag history he was one of the most interesting speakers of the morning and I wish there had been more time to hear him talk.
When the speakers were finished it was time for the fruit contest awards and the raffle drawing. This is my one halfway-decent photo from inside the auditorium as the awards were being given.
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That citrus fruit shirt he's wearing really stands out doesn't it? The plants on the stage are for the raffle and the bit of the palm you can see him standing in front of was the first item drawn won by yours truly - a European Fan Palm. It was somewhat like carrying a porcupine getting it into and out of the truck. I still haven't decided where I'm going to plant the thing, but I'm sure something will come to me presently. The bad thing about it is that it's gotten me interested in palms now as if I needed yet another type of plant interest...
Once the awards and the raffle were over it was time for lunch which gave me a chance to pick Monte Nesbitt's brain more about his work with satsumas in Alabama and the various cold resistance strategies they've employed. I have a terrible memory for names so I can't recall everyone that I spoke with that day, but there were a lot of them! There was an amazing amount of knowledge walking around the place.
Lunch finished it was time for the walking tours. The first was with Dr. Wayne Hanna. He's the turf and forage grass specialist at Tifton, but he's taken an interest in cold hardy citrus and is trying to develop seedless varieties that can be grown in South Georgia. Here's a photo of us all out in the field near to the conference center where he's telling us about his experiments with Changsha tangerine and Ichang lemon. The conference center is the large building in the far background.
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Behind him are his trees. The Changsha row on the left, the Ichang on the right.
He says the lemons have only just begun to bear so I was only able to find one fruit in a position that I could get a photo.
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It's too soon to say if they are going to pan out, but it looks promising so far.
The Changsha he is further along with. As you can see the trees are loaded with fruit.
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The lighting is a bit weird because the sky was starting to lighten a bit and I wasn't able to improve it more than that in the editing.
Here's a close up of the fruit on the branches:
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They had nice color and most of them had good external qualities.
But what he's working on is seedlessness so it's the inside that tells the story. Here are several of the fruit that he cut for us.
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As you can see most of them have a fair amount of seeds, but you'll note the one fruit in the lower left is seedless. Here's a close up for a better view.
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He's still working on identifying the specific branches of specific trees in the row that are producing the seedless fruit and whether they'll continue to do it year after year, but it looks promising so far.
Of course no seeds is only part of the story. The fruit has to taste good as well and Dr. Hanna graciously allowed me to sample some of the seedless one that he cut when the presentation was over. It was surprisingly good. A decent Page or Ponkan would still be better in my opinion, but had I paid money for a sack of those Changshas at a fruit stand I'd have been pleased with what I got. If he's providing any cold protection for those trees I must have missed it. I can say they are all out in the open just several hundred yards from the conference center. If ever he is able to develop one that he's satisfied to release I'll be in the line to get one.
The second walking tour was Dr. Ruter's ornamentals work at the plots on the other side of the Interstate. The only photos I took of that area were the oil camellias he's working with. The species name is
Camillia oleifera and they look much like any other camellia in the appearance of the plant itself. The flowers are mostly single though he had some nice doubles as well. What makes them of particular interest are the rather large seeds they produce. The pod with the seeds inside is about the size of a ping-pong ball and they have a high extractable oil content. Given that the plant is a long lasting perennial there is potential for development of an edible oil source similar to olive oil in chemical composition and with a higher smoke point. He's still fairly early into his project but I think it shows some promise.
The 2009 Exposition is scheduled to be held November 21st in Charleston, South Carolina at
Magnolia Plantation. I don't have any further information yet, but when it becomes available it should be posted on the
Southeastern Palm Society website who sponsor the exposition every year. I'll try to remember to post it here as well.
In the next post will be the photos from the fruit judging competition. If you have any interest in citrus you want to see them!
.....Alan.
Labels: citrus, fruit, ornamentals