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Tropical Fruit Discussion / Re: ID Please
« on: September 04, 2020, 07:08:28 PM »
Thanks folks. My friend just sent me more pics, and I think we're in the right ballpark here!
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Tropical Fruit Discussion / ID Please
« on: September 04, 2020, 07:58:31 AM »
This plant was given to a friend as an Australian finger lime. But the leaves, stem, and attachment of the fruit don't look right for that ID. Unfortunately, he did not have a picture of the interior of the fruit. I've asked for that. My best guess has been something close to Uvaria, since the fruit attachment reminds me of Asimina fruits, but again, the leaves don't look typical for something in Annonaceae. So I'd appreciate it if someone who recognizes it could let me know. Thanks.
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Tropical Fruit Discussion / Re: How To Graft Pitanga - Suriname Cherry (Eugenia uniflora) With a Modified Cleft
« on: September 03, 2020, 06:02:30 PM »
Nice! Thanks. I've not tried cleft grafting them. I get pretty good success with veneer grafts.
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Citrus General Discussion / Re: orange dog/swallowtail
« on: July 10, 2020, 12:00:55 PM »
I've not noticed any variety preference here (Lakeland, Florida). They are native in the area, where Zanthoxylum species are their natural food. But we seem to see them on all our citrus.
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Tropical Fruit Discussion / Re: Eugenia uniflora: zill black VS black star
« on: March 26, 2020, 10:48:06 PM »
I don't know Black Star at all, but I do grow Zill Dark (not sure if that is the same as Zill Black).
Zill Dark makes a good-flavored, sweet fruit and bears heavily. We find that if we pick them ripe and refrigerate them for a few days, they develop very much the flavor and texture of a good black sweet cherry.
Zill Dark makes a good-flavored, sweet fruit and bears heavily. We find that if we pick them ripe and refrigerate them for a few days, they develop very much the flavor and texture of a good black sweet cherry.
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Tropical Fruit Discussion / Re: What grapes would you grow if in east central Florida?
« on: November 07, 2019, 08:27:54 PM »
'Blue Lake' and 'Lake Emerald' are nice. 'Blue Lake' is similar to 'Concord', and 'Lake Emerald' is similar to 'Niagara', but they will do well in central and south Florida. 'Orlando Seedless' would also thrive, but be aware that it tends to make really small grapes that often don't have a lot of flavor.
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Tropical Fruit Discussion / Re: Avocado recommendations, Florida 10A on the Gulf Coast
« on: October 06, 2019, 09:42:00 PM »
I grow Brogdon in Lakeland and love it. But if I were in 10a, I think I'd go with some less cold-hardy ones as well. A couple of older varieties, if you can find them, are 'Dr. Dupuis #2' and 'Booth 7'. Both are quite delicious.
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Citrus General Discussion / Re: flying dragon vs trifoliate orange
« on: September 23, 2019, 09:20:53 PM »
I heard a presentation years ago (Perhaps at the International Citrus Congress in Sun City South Africa, 1996???), about Flying Dragon from seed. They said that while it was highly nucellar, there was a lot of variation among seedlings. As I recall, they said that there was a nice correlation between the degree of thorn curving and the amount of dwarfing you could get as a rootstock. So they recommended selecting in favor of the most curved thorns, if strong dwarfing was the desired characteristic in the rootstock.
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Tropical Fruit Discussion / Re: Grafting wax for mangoes?
« on: September 23, 2019, 04:56:10 PM »
I don't use it. 1/2" plastic grafting tape (we get it from AM Leonard) works well.
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Tropical Fruit Discussion / Re: Carambola flowering and fruiting on young grafted tree
« on: September 21, 2019, 07:27:13 PM »
Jungle Yard, Yes, that's true; I've just never seen it happen that close to the graft union. So more "fun" than "amazing."
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Tropical Fruit Discussion / Carambola flowering and fruiting on young grafted tree
« on: September 21, 2019, 07:02:27 PM »
Thought you all might be interested in the most extreme case of a lack of juvenility I've seen in a grafted plant -- a 'Fwang Tung' carambola, with a fruit less than an inch above the graft union, less than a year after grafting, and a second crop of flowers about a foot higher on the new stems. In a one-gallon pot in the Florida Southern College greenhouse.
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Tropical Fruit Discussion / Re: Would Brogdon or Choquette make for good Avocado seedling grafting rootstock?
« on: September 21, 2019, 04:50:39 PM »
We use a lot of Brogdon seedlings, just because we have a very productive tree, so we get a lot of seeds. They work fine.
Realize that unlike citrus, where the rootstock affects the cold-hardiness of the scion, that's not the case with avocado. So the only concern about a less-cold-hardy rootstock than your scion would be that the rootstock could freeze out from under the scion. If you graft low, and cover up above the union with mulch on your coldest nights, that also ceases to be a problem.
Malcolm Manners
Horticultural Science
Florida Southern College
Lakeland
Realize that unlike citrus, where the rootstock affects the cold-hardiness of the scion, that's not the case with avocado. So the only concern about a less-cold-hardy rootstock than your scion would be that the rootstock could freeze out from under the scion. If you graft low, and cover up above the union with mulch on your coldest nights, that also ceases to be a problem.
Malcolm Manners
Horticultural Science
Florida Southern College
Lakeland
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Tropical Fruit Discussion / Re: Reviewing my Brogdon and Joey avocados
« on: July 16, 2019, 03:55:36 PM »
Brogdon is a great avocado! I grafted one in the summer of 1981 and brought it to Florida Southern College with me when I came here to teach. It froze to the ground in the 1989 freeze, but otherwise has been quite carefree, and it bears a heavy crop nearly every year. The tree is now probably 40' tall by at least 25' wide. It is somewhat cold-hardy (mid- to upper 20s F), and is good at self-pollinating, as well as pollenizing any other avocado near it (Type A or B). If it has a fault, it is that it is so tall-growing. If you want it to spread, it is important to cut the top out now and then. We have a heavy crop this year, and the first of them have just begun to color up. They tend to peak for us in mid- to late August.
Malcolm Manners
Florida Southern College
Lakeland
Malcolm Manners
Florida Southern College
Lakeland
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Citrus General Discussion / Re: Oranges And Its Sugar Content
« on: May 16, 2019, 12:39:57 PM »
Mangaba, what are you saying? A glass of orange juice does produce a spike in blood glucose, in this case in less than 30 minutes, and in my case lasting a bit over two hours.
At least in Florida-grown oranges (and I assume elsewhere), the mix of sugars tends to be close to 50% sucrose, 23-25% glucose, and 25-27% fructose. That does not vary significantly based on maturity of the fruit; but of course the sugars-to-acids ratio does increase over time. It also does not seem to vary significantly among cultivars of C. sinensis.
Certainly, fiber and pectin will have an effect. In the little experiment I did, it was unfiltered, freshly-squeezed juice, so it would have contained the full, natural levels of both, to the extent they were expressed in the juicing process.
At least in Florida-grown oranges (and I assume elsewhere), the mix of sugars tends to be close to 50% sucrose, 23-25% glucose, and 25-27% fructose. That does not vary significantly based on maturity of the fruit; but of course the sugars-to-acids ratio does increase over time. It also does not seem to vary significantly among cultivars of C. sinensis.
Certainly, fiber and pectin will have an effect. In the little experiment I did, it was unfiltered, freshly-squeezed juice, so it would have contained the full, natural levels of both, to the extent they were expressed in the juicing process.
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Citrus General Discussion / Re: Oranges And Its Sugar Content
« on: May 15, 2019, 07:08:01 PM »
Ok I did the experiment this afternoon. Twelve ounces of freshly harvested and freshly squeezed 'Rhode Red' Valencia juice, with two baseline readings prior, then following my numbers for about 2.5 hours, when the glucose numbers had come back down. It was less of a spike than I would have expected (I had not had orange juice in perhaps 10 years!), although there was a clear spike.
Whole fruits seem to have very little effect, in that the fiber and cellular structure slows down absorption much more than does expressed juice. Still, I'm pleased with these numbers.
Whole fruits seem to have very little effect, in that the fiber and cellular structure slows down absorption much more than does expressed juice. Still, I'm pleased with these numbers.
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Citrus General Discussion / Re: Oranges And Its Sugar Content
« on: May 15, 2019, 02:15:01 PM »
I've read several research reports since this morning. What they seem to claim is that orange juice (today) doesn't affect fasting blood sugar (tomorrow morning). I can believe that. They also say it doesn not affect a1c levels. I can also believe that, assuming one is careful with other aspects of the diet. Still, I don't like the fact that my blood glucose will shoot above 200 if I drink a glass of orange juice. I suppose I should try it, and then keep record of how quickly it comes back down. If I do so, I'll report here.
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Citrus General Discussion / Re: Oranges And Its Sugar Content
« on: May 15, 2019, 04:41:18 AM »
Millet, have you tried it? As a type-II diabetic, I cannot dring orange juice. I know of nothing that will spike my blood glucose faster or higher than OJ. And our Bio department uses OJ, rather than Glucola, when they track glucose tolerance with students, since it does the same thing and tastes so much better.
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Citrus General Discussion / Re: Budd blood orange
« on: May 15, 2019, 04:35:11 AM »
I have not grown it, but it was introduced to Florida specifically because it would develop better color under our warm-nights conditions than some of the more traditional varieties.
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Citrus General Discussion / Re: Dr. Malcolm Manners
« on: May 15, 2019, 04:31:50 AM »
Hi folka. I've found you. Thanks Millet. Malcolm
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