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Messages - lebmung

Pages: [1] 2 3 ... 10
1
Citrus General Discussion / Citrus tristeza virus test
« on: Today at 12:03:22 PM »
Has anyone used these Citrus tristeza virus on site tests? It's handy when you get a new citrus tree.

https://orders.agdia.com/agdia-immunostrip-for-ctv-isk-78900

2
Nice video, the method is called micrografting.

3
Tropical Fruit Discussion / Re: How to prevent Mango from blooming
« on: October 15, 2018, 06:41:50 PM »
Use a nitrogen fertileser such as urea heavily. Also use an auxine to promote apical growth.

4
Tropical Fruit Discussion / Re: Papaya questions
« on: October 13, 2018, 10:57:06 PM »
What would happen it's like this: left papayas will continues to grow and make new flowere.
They will not be bigger or ripe faster. The one will no fruit will continues to make flowers.
When the temperature drops everything stops, growth, fruit and flower. Papaya needs heat. That is the decisive factor.
Low temperatures and water will kill them

5
Citrus General Discussion / Re: Rootstock id
« on: October 13, 2018, 04:40:29 AM »
Yes,it seems like it belongs to papeda group. My spelling mistake.
A kaffir lime was grafted on this. Then a freezing cold killed the scion, but not the rootstock. So I left it grow to harvest some future rootstock.
I don't know the exact species.

6
Citrus General Discussion / Re: Femminello Sfusato
« on: October 13, 2018, 03:40:23 AM »
Small twigs can be shipped in an envelope then you can graft them. Just get them from a virus free zone.

7
Citrus General Discussion / Rootstock id
« on: October 12, 2018, 08:26:45 PM »
Anyone might know what this root stock is? I got it from Thailand where they graft on it. It grows very well, no iron deficiency symptoms @ ph 7. Drought tolerat.
From my opinion it could be a peptada.



8
Citrus General Discussion / Re: Container soil mix.
« on: October 10, 2018, 03:44:07 PM »
Here is my citrus mix with montmorillonite clay, it looks like perlite and it shrinks when it gets dry.


9
Citrus General Discussion / Re: Container soil mix.
« on: October 10, 2018, 08:28:07 AM »
Little check...Seramis is just clayballs. Can be bought for less than 10$ for a 25 liter bag. I used it for the first time this year. I mix it with CCM Mediterranean soil. Don't know what is better though: perlite or clayballs..

The clay balls are expanded clay during a heat process, which is different form the natural stone.
I use a organic potting mix, which has coarse pet moss and Montmorillonite clay 2-10 mm.
These are not round, I will take a picture. The Montmorillonite clay swells with the addition of water, then it contracts as the water evaporates or is taken by the plant, so it results in more air pockets.
I also add perlite to the mix to make it lighter, as I feel like the soil gets too much water. Perlite is good for the winter but very bad for summer ( more watering, 2 times a day)

10
Tropical Fruit Discussion / Re: Thai Apple (Apple ber, Thai Jujube)
« on: October 10, 2018, 07:55:13 AM »
Thai jujube is a variaty of indian jujube, Ziziphus mauritiana. It survives light frost, very drought resistant, and the fruit is better taste than Chinese jujube.
Depending on the graft you have they are self pollinating with continuous fruiting, even in a small pot during the winter. Very resistant plant.
This is mine in a 2 liters bag. Flowers and fruits on the same young tree.

https://www.facebook.com/plantetropicale/photos/a.1098659693489856/2046680918687724/?type=3&theater

11
Citrus Buy, Sell, & Trade / Re: Fast flowering trifoliata
« on: October 09, 2018, 05:23:59 PM »
That is sad. The post office need to make money to survive like everywhere else. People don't send letters anymore, and they have a big revenue loss.

12
Tropical Fruit Discussion / Re: Banana/Plantain Macropropagation
« on: October 09, 2018, 06:26:57 AM »
Nice, this technique seems much easier than tissue culture, but I think I would just cut into 4th's and prune back to one shoot, don't need that many.  There is some debate here in Thailand about why some tissue cultured bananas are going to seed with many people saying it is because wild bananas are being planted nearby, but I think it is the mutated genes reverting... so another good thing about this technique is that it would likely not cause mutation.

I think will try this method someday, I spent a lot of money this year researching and finding every good seedless strain of banana in Thailand, even more than can be found on this site:  https://bananacenterkp.weebly.com/3610.html

Some of the most expensive edible corms in Thailand are Namwa Dam (black Namwa), Tepanom (praying hand), Mahoi (double-triple flower Cavendish), and Elephant Banana (Tiparod sp.).

The Fe'i looks really cool, looks like there are many different kinds.  I have a variety of Gluay Hin, Saba - https://en.wikipedia.org/wiki/Saba_banana that has the same squarish angular fruits, but it is yellow which usually turns to black.  Recently cut down most of these and filled over, they are coming back up though.  They are difficult to ripen in my climate without turning completely black.

Do you grow Namwa Dam ? Is the stem black like  black balbisiana?

13
Citrus General Discussion / Re: Could you help?
« on: October 07, 2018, 10:55:20 AM »
It seems to be lemon. It has an iron and nitrogen deficiency.
I have a 30 years old lemon that never bloomed. I neglected, it survived from -5C, died back, then started to grow again from roots.
The juvenile period for lemon is long, better graft it.

14
Tropical Fruit Discussion / Re: Is something wrong with my Dream?
« on: October 07, 2018, 10:41:51 AM »
You could be having a wet Dream. Overwatering after planting.

 ;D ;D ;D

15
Tropical Fruit Discussion / Re: rarest papaya on earth. palanda papaya
« on: October 06, 2018, 12:01:49 PM »
Nice job. I am afraid it's a male. Don't kill if someone will have a female and you can share the pollen.

16
Citrus General Discussion / Re: Nitrogen deficiency?
« on: October 06, 2018, 10:51:21 AM »
I don't think I would spry an in ground citrus tree with urea, or other nitrogen sources, in October. Especially in an area as susceptible to cold freezing weather as Citradia's location.

You are right. Sorry I didn't look at the zone you live in. What I wrote would be valid in sub or tropical regions.

17
Tropical Fruit Buy, Sell & Trade / Re: Looking for babaco cuttings
« on: October 06, 2018, 10:45:55 AM »
No it's not. Now they start to have fruit, then then fruit starts to rippen in January-April. After that you cut it and from one Tree you harvest 2-3 cuttings, out of which one roots.
It's quite a difficult plant to grow in pots, watering is the main issue. It root rots easily.

18
Tropical Fruit Discussion / Re: 52 degrees, too cold for potted tropical?
« on: October 06, 2018, 04:55:21 AM »
Growth stops, and if you overwater them they root rot. Keep them dry.

19
Tropical Fruit Discussion / Re: Pot size for pineapple tops?
« on: October 03, 2018, 03:21:21 AM »
I successfully fruited in 1 gallon pot.

20
Citrus General Discussion / Re: Nitrogen deficiency?
« on: October 02, 2018, 03:11:59 PM »
To test if the deficiency it's coming from Nitrogen, I suggest foliage spray of urea.
Low biuret urea applied is absorbed at a 24% rate within an hour for citrus plants. Keep the plants out of direct sun. Apply at lower than 25C, early in the morning or late in the day, but not during the night.

21
The top dies. The temperature can drop to -18C in the night for few days.
Musa sikkimensis and Musa basjoo rhizomes survive in the ground if covered.
Musa balbisiana is a strong candidate until -1C. The Musa balbisiana ‘Kluai Tani’ I grow it from a seed colected in a forest in northern Thailand where temperatures can drop to 2-3C. Not to be confused with Musa balbisiana ‘atia black’ which has a black stem and seeds are readily available in seed shops.

22
What you added should work.
You do need to lower the ph, because like I said above some elements become unavailable.
The mangosteen is a slow growing plant, it likes a sandy red draining soil like 1 peat : 1 loam topsoil : 2 coarse sand. I don't know about your worm castings soil, but if it holds a lot of water then the root system might get damaged. Worm castings should be acidic, so the water source is hard.
The ph would eventually be lower, however keep in mind the salt accumulation in the soil, over time the total salts dissolved will kill the plant.
Rain water in big cities is acidic and full of pollution. To get the best of it, collect rain water after 30 min of raining, the air and the roof will be cleaner.

23
In potted plants to lower the PH from 7 to 6 you should use:
- 1g powder or 1.5 g pellet per liter of soil (1/4 to 1 teaspoon per gallon) in form of elementary sulfur 99,99%
- it takes 6 months with application now in the autumn, if pots go inside it might take 3-4 months.
- a worm cast or humus fertilizer to provide additional bacteria to the soil to breakdown the S

Hard water is the problem, calcium carbonate builds up in pots which increases ph.
Fe found in fertilizers (the cheap Fe chelate) is not available over 6 ph, Mg as well. P over 7 ph.
Foliage spray of Fe is sometimes useless, unless done every other day, which can burn the foliage. Soil application is better.

24
Only seeds. The plants are not very big for cuttings.



25
Citrus General Discussion / Re: Is this phytophthora?
« on: October 01, 2018, 11:11:26 AM »
Then it seems to be an infection which makes its way from the cuts.
Cut the dead twigs then brush the stem with 0.5% Copper Oxychloride which will kill on contact both fungi and bacteria, then keep them in high humidity so stem doesn't dry easily.

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