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Not sufficient Durian Dialogue


Hello all
Marvel f any of you possibly can inform me what’s going on with the most recent flush on my sunan durian. Appear to have loads of die off – tree appears in any other case wholesome and the two timber subsequent to it are high quality


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 appears to be like like harm from a herbivore.
From my analysis herbivores like drier tissue, “extremely hydrated”/”moist” tissue makes digestion tougher and in addition dilutes the solids they require. Once I take brix ranges thought out the yr 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 appears to be like 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 virtually oily shimmer and really feel to them, be fairly lengthy and broad 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 attainable in an orchard spacing solar depth system although. Some secondary plant metabolites seams to be lowered in these form of rising environments, eg. amino acids, fatty acids. I do know individuals 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 section. I’m attempting to check it is Ontogeny.

By the point the tissue reaches to the cover high the age of the tissue or the ontogenetic section might be mature and thus prepared for FULL SUN (aprox max 12H a day for equatorial). And the foundation system can be large by then and capable of maintain sap throughout intense solar.
I feel Ontogeny can be the rationale why horticulturalist Dr. Richard Campbell climbed to the highest of an enormous Mangifera Caesia to get his graft wooden, highest attainable ontogenic section, 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’ve reduce down all of the previous development durian tree’s for mono musang king grids we are going to notice the loss.  A good friend of mine thinks Musang king could 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 attempt a foliar spray of fulvic acid, it is meant it briefly enhance the brix stage within the leaf/tissue and make the leaf and tissue much less fascinating to herbivores. Have not bought the information for that but, simply attempting to get an excellent base of management samples now.

In case you even have steam borers I might say the tree is on it is means out, IME borers are available in at a late state of decline in well being.
You would attempt 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 can be in for lots of intervention, if it is not already to late.

Borers are one of many purpose I do not domesticate durian clones.
The borer an infection price have been totally different when I’ve in contrast farms with seedling tree’s vs vegetive clones, greater 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 need to hear it… However to me it is so self evident and possibly replicate the present excessive durian worth and low availability in Australia. And to make use of systemic pesticides is inhumane IMO because it additionally enters the fruit which unknowing prospects eat. “Systemic” Regarding or affecting the complete physique or a complete 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 trying into toxicology of their merchandise, however ultimately some syn. chemical compounds are taken of the market nevertheless it’s okay for Bayer trigger they bought 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 appropriate it? OM? Ca? Natural acids/chelators?
One a part of our forest have Heavy clay with CEC 5.6 which could possibly be as a result of age of the clay particles right here trigger normally Heavy clay can have greater CEC from what I’ve been informed.

This 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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