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Messages - pagnr

Pages: [1] 2 3 ... 5
1
Citrus General Discussion / Re: Grafting onto fast flowering Poncirus
« on: January 15, 2022, 05:37:15 PM »
In my experience, I budded a seedling scion wood to 5 year old Flying Dragon. These FD stocks had nearly all flowered fruited at this age.
The FD trees budded with the seedling grew well and promptly flowered and fruited.
The original seedling has not yet flowered.
The FD trees were in 5 litre pots, so bigger than the usual FD seedlings, but not overly large trees,
i.e. it was not like top working a big rootstock.
Mostly Citrus are grafted to young immature stocks, so this wouldn't show up.

I think it is worth investigating grafting onto early flowering rootstocks.
Since the fast flowering trifoliata is a small plant, you may lose some vigour ??
There may be a chemical/hormone flowering factor transmitted to the scion from the flowering aged stock.
Most Citrus are complex hybrids of several "species", there may be competing genes for flowering time.
This may be why there is no clear answer to advancing flowering time, but many anecdotes.
Also it may not work equally for all Citrus types, depending on the ancestry.

2
If it is macrophylla aka Alemow or Colo from the Phillipines, the fruit are cooked whole in stews.
If you want to use it in a restaurant, you might try Ponzu type dressings with the juice ??

3
"Looks like a large kaffir lime."

Looks like Citrus macrophylla,
and since it's related to KL I can see why you said that.
It is a rootstock variety in USA, so could pop up from suckers or failed grafts.
The foliage doesn't have the double leaf / enlarged petiole of KL or other Papedas.

4
Citrus General Discussion / Re: Texas naval orange variety
« on: January 12, 2022, 05:03:14 PM »
I think there are varieties of Citrus that do better in Texas.
Also preferred Orange varieties that do better in Texas from a commercial standpoint, i.e. colour, sweetness, ripening time , freeze tolerance etc.
That's just from bits of info that have stuck in my mind.
Probably Texas Citrus organisations or Ag extension etc would have good info.
There are probably historic early varieties right thru to new varieties as the industry changed.

5
Citrus General Discussion / Re: Low Biuret Urea
« on: January 06, 2022, 05:16:52 PM »
Here is some Low Biuret Urea application info from an Australian company
https://www.incitecpivotfertilisers.com.au/~/media/Files/IPF/Documents/Use%20Directions/Use%20Directions%2002%20Liquifert%20Lo-Bi.pdf
This product would have to be sourced from a farm supply shop.

6
I have Ammonium sulfate 21-0-0  Do I have to worry about BIURET in my feed

I wouldn't think so, you could contact the manufacturer to see if there is any Urea as impurities.
Do you normally use Ammonium Sulphate  ?? It may tend to drop pH, but that may be useful to balance hard water.
You may want to consider Ammonium toxicity problems, rather than Biuret toxicity.
Just watch the strength of your feeds, and don't apply in cool dull weather.

https://www.pthorticulture.com/en/training-center/ammonium-toxicity/

7
Citrus General Discussion / Re: Remaking the Australian Red Lime Hybrid
« on: January 01, 2022, 06:08:36 PM »
Fingerlimes have a tendency to produce numerous male flowers and drop fruitlets. It's probably more certain to pollinate into a good fruit setter like Rangpur, Calamondin etc to recover hybrid seed. If you are not particularly keen on producing a "Lime", a mandarin or Blood orange might also be a good seed parent.

8
Citrus General Discussion / Re: Remaking the Australian Red Lime Hybrid
« on: December 31, 2021, 06:07:28 AM »
I actually prefer to use the Blood Limes when full sized but still green as 'limes'.
When red ripe, I don't think they can quite match a good red Finger Lime.
Citrange are you growing a Blood Lime cutting or grafted on rootstock ??

9
Citrus General Discussion / Re: Remaking the Australian Red Lime Hybrid
« on: December 30, 2021, 11:44:06 PM »
Here is the info from the PVR patent application

Origin and Breeding Open pollination: ‘Australian Blood’ lime was identified from progeny of open-pollinated seedlings grown from seeds of a zygotic seedling of Rangpur lime grown adjacent to a row of Citrus australasica var. sanguinea seedlings (red-flesh finger limes). Rangpur lime is a citrus rootstock cultivar that yields acid mandarin-like fruits. It has the botanical name of Citrus x limonia (Watson et al, 1984). The seedlings from which the ‘Australian Blood’ lime was identified were culled from other seedlings of the zygotic Rangpur lime seedling based on the obvious Citrus australasica habit and characteristics that they displayed. As a consequence of these characteristics, it is assumed that the pollen parent of the Australian Blood lime was a seedling of C. australasica var. sanguinea. The seedlings with C. australasica habit and characteristics were rowed out for field evaluation and monitoring for growth habit, fruit yield and characteristics. The Australian Blood lime was selected in 1990 when 12 trees were propagated as rooted cuttings for further evaluation. Selection criteria: it was selected for the culinary qualities of its striking red, highly aromatic acid fruits. ‘Australian Blood’ lime will be propagated vegetatively by grafting or budding to standard citrus rootstocks.
Breeder: Dr. S.R. Sykes, CSIRO Plant Industry (Horticulture Unit), Merbein, VIC.

This info from here, http://www.gondwananativelimes.com.au/australian_native_red_lime.html

Some other articles say that Ellendale Mandarin is the other parent. Not sure why this is reported.

There are a couple of assumptions in the above, i.e. that a red Finger lime was the parent, assumed because the Blood Lime has red pigmented fruit.
This may not be 100% correct, as another non red/red Finger lime could possibly contribute red genes to an orange fruited Rangpur.

As far as I know some of the Finger Lime parents used by CSIRO came from from the USA collections, possibly seed introductions.
I did grow one of these Finger Limes some years ago, from CSIRO budwood. It was a cherry red small fruit, with cherry flavour.
Not sure if that was the assumed parent.

ps The CSIRO Merbein is now closed. Not sure if the PVR patent has expired yet ??
I once saw some F2 selections from Blood Lime at a Farm Field Day, looked like bigger bumpy finger limes.

10
Citrus General Discussion / Re: Merry Christmas
« on: December 28, 2021, 05:25:15 AM »
Anyone dreaming of a white Christmas ??
We don't have those in Australia, It's summer and 37'c here on Christmas day, i'd say it was probably hotter than that.
No snow here, maybe a white Emu instead.
https://www.abc.net.au/news/2021-12-28/eddie-white-emu-central-qeensland-population-decline/100703728
and another in the mountains
https://www.abc.net.au/news/2019-10-15/rare-white-emu-finally-photographed-in-nsw-paddock/11604166

11
Citrus General Discussion / Re: Sanbokan - Anyone else growing it ?
« on: December 24, 2021, 03:43:17 PM »
As I can get plenty of the classic Citrus around here from farms, (Oranges and Mandarins), the Sanbokan is a standout for me. I really enjoy the sweet lemon flavour.
It also has a fragrant element that you can't get from just adding sugar to Lemon Juice.

12
Citrus General Discussion / Re: An identification request for CitrusPages.
« on: December 24, 2021, 03:37:35 PM »
The seeds don't look like pure Citron seeds, or even Lemon seeds.
Agree, It's more likely a hybrid, but that is expected.
I wonder what this fruit is used for ?? That's a lot of lime / lime juice in one hit.
The Alemow or Colo, Citrus macrophylla is cooked whole in stews in the Phillipines.

13
I think it was discussed on the forum here ?
https://tropicalfruitforum.com/index.php?topic=45565.0

14
Citrus General Discussion / Re: Good citrus books?
« on: December 19, 2021, 12:16:15 AM »
The works of Chozaburo Tanaka from Japan are also classic Citrus texts. They especially covered many obscure Citrus types unknown in the West.
Although he tended to name types as species, a trend that has been reversed to name all Citrus and relatives in the Citrus genus.
Genetic analysis has recently revealed complexity of Citrus evolution, including the male / female direction of crosses, multiple ancestors, back crosses etc.
This has left me with the impression that Tanaka was able to perceive some of this complexity now revealed, which is partly why he differentiated many types most would simply place together.

15
Citrus General Discussion / Re: How to bring a neglected citrus tree back
« on: December 18, 2021, 10:10:24 PM »
For severely neglected trees, nearly any fertiliser should get a response.
I would probably first go for a low to medium N, organic based, to give some soil microbe stimulation. Or at least include some soil stimulation.
As for pruning, you may as well remove any damaged growth etc, rather than resurrect the tree with it still there.
For plants with previous heavy leaf loss, maybe prune back the top third, especially naked twigs, rather than trying to get every bud to flush.
Sometimes heavy flushing on tired plants leads to growth stagnation.

16
Citrus General Discussion / Re: Urea Spray
« on: December 17, 2021, 07:16:47 AM »
Going back to the Stone Age or maybe the Far Far Far East...

Or 1500's to 1600's England, where the straw covered dirt floors of commoners houses, horse stables etc were the source of saltpetre for gunpowder.
This resource belonged to the monarch, and was collected by saltpetre men, often in a destructive or disruptive manner.
https://reviews.history.ac.uk/review/1481

17
Citrus General Discussion / Re: Urea Spray
« on: December 16, 2021, 03:57:49 PM »
Personally, I don't think there are health concerns using urine for plants. It is essentially sterile.
It has emergency medical uses, with mid stream urine, i.e. suburn, as urea itself is skin moisturising.
As Galatians said, the N Urea content of Urine is far lower than Fertiliser urea, so it can't be used to make the equivalent concentration sprays.
That said, fertiliser Urea has a lot of problems with loss of N to the atmosphere, so often the effective ammount the plants can get is lower than that applied.
Not sure if more frequent low % urine sprays will give the boost of the the N fertiliser Urea spray.
Biuret is produced by heating Urea in the manufacturing process, so shouldn't be a problem in Urine.
I have used diluted urine to feed weak plants or very small seedlings that I didn't want to risk with stronger fertilisers.
Also had some Citron seedlings with what looked like Biuret problems from fertiliser in old potting mix.
It seemed to correct them, possibly by gently lowering the Biuret %  in the mix ??

18
Citrus General Discussion / Re: Urea Spray
« on: December 15, 2021, 04:51:12 AM »
would spraying with diluted urine serve the same purpose. ??

Just exactly what "equipment'' are you using ??

19
Citrus General Discussion / Re: Grafting citrons
« on: December 15, 2021, 04:49:19 AM »
According to UCR,
"Yuma ponderosa and Cuban Shaddock, are identical. However, the isozyme patterns differ."
So Its not A " Ponderosa" lemon.
Still Ponderosa is probably your best bet.
Can't see why Trifoliata wouldn't work either.
You are trying to save it, you can always graft onto something better down the track.
https://citrusvariety.ucr.edu/citrus/yuma_ponderosa.html

20
Citrus General Discussion / Re: Osmocote Plus is cheap on Amazon right now
« on: December 12, 2021, 03:31:17 PM »
The problem with micro plastics is the micro ones that you can't see, often from other sources.
I think you have to keep in mind the balance of the advantages of the slow release pills vs the negatives.
There are also effects of fertiliser run off to the environment, or loss of Nitrogen to the atmosphere which is wasteful of the manufacturing processes.
Slow release fertilisers can reduce this if used correctly.
Not saying the dead pills are not a problem.
There are other slow release fertiliser technologies, not all are coated products.

Composted chicken manure pellets, with added Zeolite are available in Australia.

21
I grabbed a leaf off my Oroblanco, and it looks very similar to your plant, can't see any major differences.

22
Pictures of your seedling would be useful, to compare with Sweetie / Oroblanco plants. At least it should be possible to tell if your plant looks pretty close, or is way off.

23
Cold Hardy Citrus / Re: Kumquat x Poncirus
« on: December 08, 2021, 03:26:39 PM »
The nice red color is inherited from Flying Dragon, normal Trifoliate and its hybrids have only yellow-orange autumn color.

Rootstock seedlings of the same strain of normal trifoliata are fairly variable as to autumn colour, and to some level when they change colour and how long they hold autumn colour. Weak seedlings, off types and runts can be clearly different in their colour and timing of change.
There are some oranges and reds possible, even verging on maroon.
Stressed or neglected trees, underfertilized etc can also turn colour earlier.

24
Cold Hardy Citrus / Re: Kumquat x Poncirus
« on: December 08, 2021, 05:42:32 AM »
The red foliage phase is rather nice.

25
Citrus General Discussion / Re: LLT lemon and LLT lime
« on: December 07, 2021, 03:38:46 PM »
Looks like an interesting project overall, Citrus and vegetables.

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