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aren't they all pretty much temperate, in need of chill hours to fruit?
No. The So shan fruited here where there is zero chill hours.

So shan, Elaeagnus latifolia, is also nitrogen fixing. BTW, the So shan fruit also has much bigger fruit than goumi.

Girdling with wire is a pretty old method. Taking to recalcitrant trees with a cricket or baseball ball, tyre iron or pipe is also old and popular. Withholding water until a specific level of stress is experienced is also widely practiced. If a tree or branch 'thinks' it will or is dying it has only one shot at immortality.
I don't recommend anyone hitting their trees, driving nails, or running over their tree with their tractor. Girdling with a wire, making a cut, or witholding water can be very precisely controlled methods. These other brute methods cannot be precisely controlled and are very likely to cause permanent damage or even kill the tree. Ihe idea is to stress the tree just the right amount, not to torture or mame the tree.

Hahaha , Oscar , remember running over his longan trees with his tractor wasn't that what an Israeli guy ( yahoo rarefruit group ) did , forgot his name , but it worked ....
You talking about Ariel? Ye his techniques were so "genius" that, maybe he should run for president of the USA?  ;)

Tropical Fruit Discussion / Re: Developing a hybrid mango variety
« on: May 20, 2017, 11:03:30 PM »
I haven't done it, but heard from breeders that it's extremely laborious because the flowers are so small, and you have to do a very large number to get a few to take.

Tropical Fruit Discussion / Jim West Presentation in Puna, Hawaii
« on: May 19, 2017, 09:58:59 PM »
Jim is here in Hawaii on a short visit from Ecuador, and will be giving a talk on thursday May 25, from 9 AM to 12:30 at Hawaiian Sanctuary, right outside of Pahoa. It is on the 12 mile marker on Highway 130. There is no admission charge. You can see more details here:

Tropical Fruit Discussion / Re: Robotic Apple Picker
« on: May 18, 2017, 10:58:37 PM »
There is nothing in this report about making the robotic picker be able to work on different fruits. Ofcourse that would make it a lot more useful, and also a whole lot more compicated, and so the cost would skyrocket.
I don't think this kind of picker would be suitable for small orchards, only mega plantings.
Yes apples are a large crop, one of the most cultivated fruits.

Can be propagated from seed, air layer, or grafting. They are slower growing and fruiting than mangoes. Time will depend on where you live?

I believe you mentioned that they are slow at first, and then after they get a certain size, grow normally.   this reminded me of Mangosteen, it grows this long tap root, with little of the finer lateral roots.  ( securing its water source )  I did some looking around seems maprang also has this tap root that it concentrates on.   

I bet that giving this tree regular foliar feeding when young, will get it to mature much sooner.  like with Garcinia.
Yes that's right, on both things.

Tropical Fruit Discussion / Re: Robotic Apple Picker
« on: May 18, 2017, 06:43:32 AM »
The thing about a robot is there is a large capital investment,  but low operating costs. Multiple picks wouldn't add much to cost like it would with human labor.

Yes, so it's only good for extremely large operations. Either that or as a rent out only unit during harvest season.
If a robot costs only $1 million, and labor cost is a high $20/hr.  you still would be able to hire workers for 50,000 hours. That's a lot of repeat picking.

Here is a photo of Kai maprang next to Mayong chid maprang:

Both trees were very productive. The Mayong Chid was more productive. I just picked in one day about 50 pounds of fruits off that one Mayong Chid tree. The tree is about 9 feet tall.

Tropical Fruit Discussion / Re: Robotic Apple Picker
« on: May 17, 2017, 06:55:01 PM »
It's all possible right now. The only question is the cost? If a really sophisticated robots costs $5 million, then how many apples would it have to pick to be cost efficient? I think in time the costs of the robots will go down and it will happen. Was all predicted in early sci-fi movies, like Silent Running.

Tropical Fruit Discussion / Re: Adam Shafran?
« on: May 17, 2017, 05:32:39 PM »
I'm pretty sure he will be at the fruit sale this weekend, so if you can make it out there you will likely get a glimpse of the man himself and also be able to buy some fruit trees.

The lazarus effect?  8)

Tropical Fruit Discussion / Re: Recalcitrant seeds stored in water
« on: May 17, 2017, 05:30:52 PM »
Is this small bump on the right a sprout or a root about to come out? Pretty sure it wasn't there before.
It's an achacha seed.

By the way, is it better to give them light or put them in the dark? In general, not just achacha.

Right kind of bump, but usually it should be at the end of the seed. Anyhow you will be able to tell in  a couple of days if it swells.

Tropical Fruit Discussion / Re: Robotic Apple Picker
« on: May 17, 2017, 05:26:43 PM »
They're using computer vision so they can at least see the red apples are ripe. Some people were trying to develop a system for self checkout lines at supermarkets to recognize the types of fruits a few years ago but we haven't heard much about it recently. There's also some reflectivity index that the robots could use to determine the ripeness of green fruits I think. Maybe they can even take brix readings of fruits like how the Japanese machine sorts mango by their brix and size without damaging the fruits. They should also be able to determine the hardness of the fruits by doing something like the air blow test they do at optometrist offices. That way they pick fruits that are still shippable but not too unripe.
How can you determine brix without cutting into the fruit?

Tropical Fruit Discussion / Re: Luc's garcinia hunting
« on: May 17, 2017, 05:24:16 PM »
I have seeds available right now. You can order them online from my website, and they don't need to go through customs, as already in USA.

Tropical Fruit Discussion / Re: Luc's garcinia hunting
« on: May 16, 2017, 10:11:21 PM »
Leaves are different, fruits are different, and i think the flowers are also different than intermedia. It must at the very least be a different sub species, in which case it could also get your name added to it.

Tropical Fruit Discussion / Re: Robotic Apple Picker
« on: May 16, 2017, 10:07:36 PM »
You're probably right about quality going down. But this type of robot is a lot more sophisticated than say the robots that picked square tomatoes 35 years ago. Those would just make one pass, pull out the whole tomato plant, and shake vigorously. The tomatoes had to be bred to be super hard to withstand that treatment. Those tomatoes were so tasteless that they were discontiued. These are regular apples. But the apples shown were planted on trellis. I think most apple orchards don't have apples planted on trellis. I wonder if this robot could work on regular apple trees?

Tropical Fruit Discussion / Re: Cherapu update
« on: May 16, 2017, 06:23:01 PM »
Peter, are you hand pollinating at all, or are the bees doing all the work for you? What is a melapona bee? I have not noticed any insects on the cherapu flowers here.

Tropical Fruit Discussion / Re: Adam Shafran?
« on: May 16, 2017, 12:32:40 AM »
Glad you finally posted Adam. All the comments started sounding like an obituary: Adam was such a great guy. HAHAHA

Tropical Fruit Discussion / Re: Luc's garcinia hunting
« on: May 14, 2017, 02:43:35 AM »
I'm glad somebody finally did this. I wish it would have been me. But thanks for the report. Mango + mangosteen together? Two of the best fruits on the planet. Luc will be immortalized with tropical fruit fame.  8) Raul should at least get a footnote in that eternal fame.  ;D

Tropical Fruit Discussion / Re: Mothers Day coming up
« on: May 13, 2017, 10:19:37 PM »
My mother also loves orchids. I used to have to bring her orchids from Hawaii, but now it's very easy to get them in southern California, where she lives. She lives in an apartment so has no backyard. But it must be in the blood because she often tries to grow mangoes from seed and pineapples from crowns on her little shaded patio.  8)

OK, i've eaten many dozens of fruits of both Kai and Mayong Chid maprangs. Both are very tasty, but i like the Kai a bit more. The Kais are sweeter, bigger, and about 2 weeks earlier. Some people have commented they like Mayong Chid better because it has a better sweet/acid balance. But i find the Kai has enough of a tart twist that it's also very full flavored.
Both are really excellent fruits, and i'm really getting much more fond of them the more i eat of them. They're kind of habit forming. And they seem to fulfill a stone fruit craving that most other tropical fruits cannot do. I've been cutting some up also to put in cereal. They cut up very easily. Don't make the messy sticky mess that mangoes do when you cut them. And there is a very good pulp to seed ratio. I'm guessing they would be excellent dried, but have not tried that yet.
The 2 types of fruits look very similar, except that the Kai is a bit larger and more dark orange. I will try to post a photo of both together for comparison later.

Tropical Fruit Discussion / Re: Banana trees "fixing" the soil.
« on: May 13, 2017, 06:31:40 PM »
Btw does anyone know how to deal with nematodes affecting banana? Seems like my banana cant handle them and the plant always topple everytime it fruits.I have since destroy the plant which is nangka banana( At that time i dont know it was nematode issue and i made a mistake by planting a senorita banana at the same spot).I applied carbofuran but still there are some rots on the root.The only banana that can grow without being affected in my neighbourhood is the grey saba banana which is only suitable for cooking and not fresh consumption.Should i find a resistant banana cultivar or are there any method to deal with this issue chemically or other ways?
Nematodes a big problem here also. I've heard that soaking the banana roots in vegetable oil solution before planting helps to kill them. Neem oil might also help as a soak. Feeding them with fish emulsion is said to help. Probably predatory nematodes would really help. Keeping the percentage of organic matter vary high, 5% or higher, helps to feed the predatory nematodes.

Tropical Fruit Buy, Sell & Trade / Re: Looking for Grias cauliflora
« on: May 13, 2017, 06:21:01 PM »
I'm hoping my 2 Grias peruvianus trees start fruiting soon, and then i could add those seeds to my offerings. The trees are getting large enough that maybe it will happen in next 1-2 years. The seeds are large and heavy and that might be part of the reason they are so hard to get.

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