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Not sufficient Durian Dialogue


Hello all
Surprise f any of you’ll be able to inform me what’s going on with the most recent flush on my sunan durian. Appear to have a variety of die off – tree appears in any other case wholesome and the two bushes subsequent to it are advantageous


Is it a nutrient deficiency ??
Cheers
Jim

I’m not stunned to see you submit this in October throughout dry climate as to me it seems to be like harm from a herbivore.
From my analysis herbivores like drier tissue, “extremely hydrated”/”moist” tissue makes digestion tougher and likewise dilutes the solids they require. Once I take brix ranges thought out the 12 months of leaves I can see the distinction in what number of leaves I’ve so as to add to the garlic press to get sap out. IMO the leaf’s seems to be a bit shrunken, idk if solely extra water will assist, possibly extra OM and water?

IME Durian leaves in Optimum well being ought to have an nearly oily shimmer and really feel to them, be fairly lengthy and extensive and still have very low visibility of veins (to not yellow) and be fairly thick to not papery. I do not know if that is potential in an orchard spacing solar depth system although. Some secondary plant metabolites seams to be decreased in these form of rising environments, eg. amino acids, fatty acids. I do know folks hate to listen to that because it’s quite simple to setup and handle.
IMO Durio zibethinus doesn’t profit from intense solar in it is juvenile and intermediate part. I’m attempting to check it is Ontogeny.

By the point the tissue reaches to the cover prime the age of the tissue or the ontogenetic part shall be mature and thus prepared for FULL SUN (aprox max 12H a day for equatorial). And the foundation system could be big by then and in a position to maintain sap throughout intense solar.
I feel Ontogeny can also be the rationale why horticulturalist Dr. Richard Campbell climbed to the highest of an enormous Mangifera Caesia to get his graft wooden, highest potential ontogenic part, within the Fruit hunters documentary.
Why do previous durian tree’s produce smaller fruits? Why do taste and texture change with age? Perhaps when we now have lower down all of the previous development durian tree’s for mono musang king grids we’ll notice the loss.  A buddy of mine thinks Musang king may be very inferior to many wild previous development durio zibethinus fruits. And Mon thong is pig meals in contrast IMO. Pigs gotta eat nicely too!
Take a look on the native Borneo pig.

You’ll be able to strive a foliar spray of fulvic acid, it is meant it quickly improve the brix degree within the leaf/tissue and make the leaf and tissue much less fascinating to herbivores. Have not obtained the info for that but, simply attempting to get an excellent base of management samples now.

If you happen to even have steam borers I’d say the tree is on it is approach out, IME borers are available in at a late state of decline in well being.
You could possibly try to cowl the stem with a movie or put a contact pesticide inside the outlet and seal with a plug.
However IMO if the underlying trigger is not corrected you may be in for lots of intervention, if it is not already to late.

Borers are one of many motive I do not domesticate durian clones.
The borer an infection charge have been totally different when I’ve in contrast farms with seedling tree’s vs vegetive clones, larger borer an infection in clones with a graft junction. Have not seen a mature durian chopping or marcott so cannot touch upon that.
I do know none wish to hear it… However to me it is so self evident and possibly replicate the present excessive durian value and low availability in Australia. And to make use of systemic pesticides is inhumane IMO because it additionally enters the fruit which unknowing clients eat. “Systemic” Regarding or affecting your entire physique or a whole organism.
And this Malaysian farmer is rejecting clones for seed grown tree’s:
https://www.youtube.com/watch?v=40k2nP0xkRs

Bayer are all the time a step forward of researchers wanting into toxicology of their merchandise, however ultimately some syn. chemical substances are taken of the market nevertheless it’s okay for Bayer trigger they obtained 10-20 years of gross sales. And the cycle continues.

Does anybody else have Heavy Clay Soil with low CEC? If that’s the case what did you do to right it? OM? Ca? Natural acids/chelators?
One a part of our forest have Heavy clay with CEC 5.6 which may very well be as a result of age of the clay particles right here trigger normally Heavy clay may have larger CEC from what I’ve been informed.

Here is the soil pattern if anybody is :

That’s from a spot on the land that haven’t been cultivated. Solely by Cassowaries ;)

Peace

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