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Topics - shaneatwell

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Tropical Fruit Discussion / Multiple rootstock tech as disease treatment
« on: January 14, 2014, 11:41:01 AM »
Simon posted this a while ago and I'm curious if there are documented examples of multiple rootstock technology being used to treat or prevent disease, especially in citrus or avocado?

Thanks for all the information.  The repots on interplanting with Guava is really interesting.  Too bad I still can't find a place that sells Seedless Vietnamese Guava, they are extremely delicious.  I will be picking up a few pherimone traps to protect my citrus.  The research regarding Genetically modified citrus with the Spinach gene looks promising.  I remember reading somewhere that there was some sort of ailment killing many citrus trees and trees were eventually saved by multiple rootstock technology.  The additional rootstock added to existing trees were resistant to whatever disease or ailment was affecting the fruitcrop tree. 

Tropical Fruit Discussion / Arbor w/ pull down walls = greenhouse?
« on: December 02, 2013, 12:28:28 PM »
I'm thinking of building an arbor/pergola like this (but longer and with more posts):

with retractable roof/walls like this to pull down in the winter:

Would appreciate your help with comments/suggestions. I anticipate that leaf clutter could be an issue on top (where I plan to grown grape or kiwi), and that the tracks might corrode (especially with the moisture inside the greenhouse). Any other potential problems? Countersuggestions? I want the openness of an arbor in the summer, and will have a table there for entertaining/hanging out.

Tropical Fruit Discussion / Does a pool moderate cold temps?
« on: November 30, 2013, 07:52:56 PM »
Has anyone measured how a pool affects yard temps and how far it extends? Specifically at near or just freezing.

Tropical Fruit Discussion / Longan on Carrotwood graft update
« on: November 23, 2013, 07:01:13 PM »
Update on the graft I mentioned in this thread:

About 4 months ago simon_grow kindly donated a kohala longan tree to me so that I could experiment on grafting it to an established carrotwood. Intergeneric and interspecific grafts have fascinated me since I started getting into growing, mainly for the chance at converting well established trees to something that fruits. I've had my eye on our backyard carrotwood, a sapindaceae member, for a while. Lychee, guarana, rambutan are all family members. Ackee, another family member, actually has the most resemblance in terms of fruits. But of the edible sapindaceae, Longan is probably the best established in socal in terms of cold tolerance and fruiting reliability.

Lychee and longan graft best using an approach method so I figured that's what I'd have to do and simon's longan allowed me to try.

I hoisted the pot into the branches, secured it and approach grafted two limbs. I shaved off what was probably 1/4th of the bark in a 4" stretch on each side of matching limbs. Bound them together with twine (the stuff from the center of baseballs) and taped with electricians tape. One branch pushed new leaves in two spots just after grafting, the other did nothing. One month after the graft I cut 1/4th of the bark and into the wood below the graft on the longan branch that had leafed out. There was a second wave of new leaves pushing on the leafed branch, which immediately ceased growing after the first cut. I repeated this two more times in successive months, circling the donor branch. At about the 3rd month most of the rest of the donor tree lost its leaves as did the other graft. I had been watering the pot, but perhaps not enough. This last thursday (21NOV2013) at the 4th month I liberated both scions from the donor tree. The leaves on the nice looking graft have looked great for 3.5 months, with no signs of wilt/burn etc. Meanwhile most of the older leaves on the donor tree have shown tip burn and dropped.

I like that one of the grafts has leafed out. I think it indicates that for that one at least I had good cambium matches. But I was a bit bummed to read in The Grafter's Handbook by R.J.Garner that exuberant growth in a intergeneric graft can be a sign of ultimate graft failure (page 52).

Here's a picture from this morning.

Here's when the tree was still tied up.

And here's a closeup of the graft after the first cut.

I've also got 3 syzigium grafts going on my brush cherry and am contemplating a loquot on india hawthorn next.

Tropical Fruit Discussion / polyembryony
« on: October 22, 2013, 12:40:13 AM »
Found an interesting post on polyembryony

I dont think this has been found true experimentally in all mangos:
Nucellar embryos begin development as soon as pollination occurs while zygotic embryos take four weeks to develop; thus, nucellar embryos often crowd out the zygotic embryos.

Tropical Fruit Discussion / mango for sucking from ecuador
« on: October 20, 2013, 01:40:52 PM »
I have a friend in ecuador that loves the mango de chupar sold there. The sucking method has been discussed here once by joeP with regard to the tyler. Does anyone know more about the mango de chupar? Is it an actual variety or just a blanket term for small sweet fibrous mangos that are appropriately consumed this way? If its a variety does it have another name?

Tropical Fruit Discussion / mulberry just dropped leaves
« on: October 16, 2013, 09:46:07 PM »
My pakistan mulberry just dropped all its leaves. Planted it last spring and it flowered and fruited almost immediately. Fruits tasted a bit grassy but not worried about that. After a couple months the leaves turned yellow. Tried a few things and eventually citrus and avocado food. Leaves colored up nicely after that,  were good for a few weeks and then suddenly yellowed, dried and dropped a week ago. Should i be worried? My neighbors mulberry thats only a couple years older is still lush and green.

Tropical Fruit Discussion / Inter species grafts
« on: October 11, 2013, 05:16:19 PM »
I've been fascinated by the possibility of interspecies grafts this last year, mainly as a means of converting established landscaping trees into fruit bearing trees. I know that there are some reported, but its hard to find information on what's been tried and failed. Stonefruits and citrus have lots of compatibilities. But what about other subtropicals and tropicals?

I have 3 experiments going right now, one of which looks promising. Should be able to report in a couple months.

I'd be interested in hearing your stories.

To the Portuguese and Spanish members, Would anyone be willing to send (or arrange to be sent) some Aguardente de Medronhos, the brandy made from Arbutus Unedo fruit?  I'd of course pay for the bottle(s), shipping and your trouble.

Tropical Fruit Discussion / first taste of jelly or pindo palm fruit
« on: September 29, 2013, 08:23:17 PM »
Not bad. Like a sour green apple with a hint of carbonation.

Or a sour version of a loquot.

Tropical Fruit Discussion / when to fortify or transplant seedlings
« on: August 27, 2013, 09:34:43 PM »
I killed my orangeberry seedlings. Been trying to grow them for six months. Finally got them to germinate in ziplocks using sterile technique. Then they did ok in peat moss and perlite. The root grew at least 2 inches. The seed further split exposing two green faces (capable of photosynthesis?). A stalk emerged and did nothing. Then months later new stalks emerged that split into tiny leaflets at the top. These looked happy but did nothing for a month. So i decided they needed a few nutrients and added a thin layer of worm casings. Plants turned brown in a couple days. So my question is should i have just left them, transfered them to something else or in some other manner helped them along? Web search indicates i should transfer when true leaves appear. Is that what i had? How long can a slow grower survive in nutrient free media?

Tropical Fruit Discussion / sexing flower buds on a papaya
« on: August 24, 2013, 01:30:57 PM »
Per the disection photos on this page i cut open a bud from my mexican papaya seedling. I can see ovary, stigma AND anthers. Yeaa! I ha hermaphrodites.

Continuation of this thread, but i thought it might deserve a new thread because ive not ever seen disection of a bud recommended.

Just discovered this common landscape bush has an edible fruit. Picked four today. Two were large , 3cm, bright red and soft to the touch. Two were small, 1.5cm, dark red and soft to mushy. Guessing the latter were overripe. The larger fruit were grainy with a taste close to unripe strawberries. The smaller were closer to unripe blueberries. Both got more sour towards the end and left some stickiness on the lips. Squeezing the fruit you could see the latex. Where the stem broke off as well. The taste was ok but id not seek it out.

Ive read that the taste can be quite nice so ill keep searching for a good specimen.

Tropical Fruit Discussion / Papaya pushing flowers?
« on: August 13, 2013, 08:52:57 PM »
Of everything I've planted the last 6 months, our mexican papaya has done the best. I've been told I have the 2nd worst soil in san diego county and I have pics to prove it :) . Anyway, I poked about 20 seeds in the ground late winter. Watered them for a couple weeks and nothing happened. It was my 4th attempt so I threw in the towel, mulched the area and planted some kangaroo paw. A month or two later a dozen popped out of the mulch! That was march/april. Culled it down to the 4 strongest over time. 3 have a single stalk with tons of leaves all down the stalk. The 4th branched near the base and has 4 stalks. Now they're all about 3.5ft tall and I think pushing flowers (2nd pic). Very exciting.

Camera messed up the colors, but you get the idea.

These are growing in a 2x2x2ft pit of clay amended with composted steer manure.

As soon as I can sex the flowers, I'll remove two to leave a single male and female.

Tropical Fruit Discussion / branching mexican papaya
« on: July 20, 2013, 12:02:05 AM »
Im growing 4 papayas from seed. Strongest of a dozen that germinated. theyre about 2ft tall now. One has large branches low down. Is that unusual? The other three are all trunk and leaves.

Tropical Fruit Discussion / San Diego Mango lovers
« on: July 12, 2013, 05:20:32 PM »
I'm new here and love the forum. Been trying to find as many different kinds of mangoes as I can in San Diego before I make my final tree selection for planting next spring. Turns out there are quite a few places to buy them in San Diego. I have yet to meet other Mango growers, but I know they exist :)

Convoy area: Ranch 99 (Chinese) on Clairemont, The Fruit Store (tropicals) on Convoy and the Korean grocery next door.
Miramar: Miramar Cash and Carry (Indian), Indian Whole Foods on Black Mountain Road.
Mira Mesa: Vietnamese market behind Target.

I've scored tons of Manila/Ataulfos, Kents and Tommy Atkins, but have also found Haden, Green (dessert?), Carabao, and Kesar. Reportedly C&C also gets Alphonso. Very much looking forward to Keitt when it shows up. Don't know if there'll be anything more exotic than those.

Perhaps this'll help someone, took me a while to find.

Tropical Fruit Discussion / Do Mango trees inosculate?
« on: June 27, 2013, 01:39:06 PM »
When mango trees grow together do they inosculate, fuse cambiums, or do the cambiums remain separate. I've read a couple threads here that show pictures of trees grown together (e.g. two trees from a polyembrionic double seedling) but cant find info on inosculation. Contemplating some tree sculpture with mangos. I guess the only way this would be known is if someone has cut down trees or limbs grown together and examined the fusion region.

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