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 Farming and Gardening in Puna
 Inducing Longan to flower with potassium chlorate.
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1voyager1
Kamaaina

USA
734 Posts

Posted - 10/08/2018 :  11:08:39  Show Profile  Reply with Quote
I ran across this a while ago:

https://hilo.hawaii.edu/panr/writing.php?id=255

I'd like to try a foliar application of this in December to see if I can induce flowering for the next season.

Is there a chemical supply house here on BI?

I have found instructions on how to make it, and a mainland supplier that say they can ship to all 50 states.
I find that claim to be a bit doubtful.








1voyager1
Kamaaina

USA
734 Posts

Posted - 10/10/2018 :  15:56:37  Show Profile  Reply with Quote
The nearest chemical supply house I can find is in Honolulu.
I checked out the mainland supplier that said they could ship to all 50 states.
The order is placed for a 30g bottle, enough for 15 liters of spray application, way more than I need for the upcoming season.

It is coming by UPS SurePost.
They will deliver to the Pahoa PO within a week, or so they estimate.

I did not think UPS could fly it here, but they apparently can.
It would have been more expensive for home delivery by UPS Ground.

A new set of leaves are growing on the Longan right now.
I should be ready for the next growth set in December.
Hopefully, we'll get a batch of Longan fruit next season.

EDIT:
The tree was put in for M'Lady.
She prefers Longan to Lychee or Rambutan and is getting tired of waiting for the fruit.
I put the tree in about 4 or 5 years ago.
They are notorious for taking a long time to begin fruiting.


Edited by - 1voyager1 on 10/10/2018 16:03:40
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Mangosteen
malihini

USA
59 Posts

Posted - 10/11/2018 :  12:20:40  Show Profile  Reply with Quote
Where in Hilo have you checked and been told that they don't carry it?

There are so many places in town that sell farm fertilizers and chemicals.

Longans can be found in the markets year round now so some farmers are spraying and if farmers are spraying, potassium chlorate is available locally.
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1voyager1
Kamaaina

USA
734 Posts

Posted - 10/11/2018 :  13:45:51  Show Profile  Reply with Quote
Potassium chlorate is not a standard agricultural fertilizer.

It is a vigorous oxidizer whose primary use, as far as I know, is in fireworks and similar pyrotechnics.
That is why I thought it couldn't be flown to Hawaii.
I guess, because it is an oxidizer, not an actual explosive, it is allowed in small quantities, at least on flights with no passenger service.
It is noted for being able to start fires when it comes into contact with a fuel, such as sugar granules.

How it was thought of to induce longan flowering is beyond my ken.

What you say may be true.
But, I have only 1 tree, not an orchard.
Quantities that may be available from BEI or other ag suppliers, are not feasible for my uses.
Plus, I do not want to be storing a large quantity of it indefinitely.

As it is, it is costing me almost $25 to get a $4.50 30g bottle shipped in.
It should allow me to treat the tree once a year for 7 years or more.


Edited by - 1voyager1 on 10/11/2018 14:12:06
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shave_ice
Da Kine

373 Posts

Posted - 10/11/2018 :  18:38:37  Show Profile  Reply with Quote
People figured out that potassium chorate induces flowering in longans when they noticed that all the longan trees spontaneously started flowering after fireworks were set off around the trees after Chinese New Years. The reason why you see longan in the markets year round is because farmers are able to artificially induce flowering throughout the year. This technique does not work with lychee or rambutan however, even though they are all in the same family.
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shave_ice
Da Kine

373 Posts

Posted - 10/11/2018 :  18:43:22  Show Profile  Reply with Quote
Chlorax bleach will work too.
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terracore
Punatic

5125 Posts

Posted - 10/13/2018 :  13:27:40  Show Profile  Reply with Quote
If it is available locally, I would think that BEI or CPS would carry it.

When I was a kid we bought potassium nitrate from the local pharmacy. Surprisingly the pharmacist sold us a bottle, but not before yelling out not to blow our fingers off.
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Durian Fiend
Da Kine

USA
445 Posts

Posted - 11/03/2018 :  16:05:18  Show Profile  Reply with Quote
What cultivar is it? If it's a decent one then you shouldn't have to do that. Diamond River is the best because it's a more tropical variety. It produces every year, prolifically.
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