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Messages - Guanabanus

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Stresses, such as cold soil and droughts, certainly make roots less able to fight off infections.

Did you add potting soil or compost to the planting hole?

Check with a magnifier lens, for mites. 

Or it might have phytophthora root rot.  The stems already look shriveled.

Looks good enough.

Maybe it has some urea in the soil mix or in the fertilizer--- and no Nickel, so can't make urease enzyme.

Yes.  We have also done that using palm fertilizer on potted mangos, with 0.22% B.

What kind of soil were those mangos planted in?

Go ahead and plant.  On a tree with that many branch tips, there will almost always be some new growth somewhere.

I don't know of any variety that doesn't get MBBS sometimes.

Interesting.  I have never seen leafhoppers bothering mangos.  I don't know what the pits are from--- maybe the leafhopper?

In the lower part of the picture are two angular black spots;  maybe Mango Bacterial Black Spot.

Tropical Fruit Discussion / Re: What Is This Fruit?
« on: April 13, 2022, 09:27:50 AM »
Number one, yes.  Also known as Australian Beach-Cherry.

First photo may be of a slight excess of fertilizer, especially of urea.
Second may be a little anthracnose.

No big worries so far.

I put pruned (and cut into straight sections) branches (less than 1 inch diameter of wood) and fallen leaves on the ground under fruit trees of any kind.

When sugar-apples are leafless, or nearly leafless, don't water them.

Also make sure it has some gypsum or lime.

No decomposable ammendment is likely to improve planting holes for mangos--- way likelier to sicken.

In soil mixes, 10% peat is great (up to 20%)  (by volume).

Spiders or spider-mites or webworms.

Tropical Fruit Discussion / Re: Annona Pests
« on: March 23, 2022, 06:27:23 PM »
Any stressed tree. 

I doubt your avocado has the wilt, if it actually grows back, and actually keeps on fruiting for years.

Tropical Fruit Discussion / Re: Annona Pests
« on: March 23, 2022, 01:22:25 PM »
Ambrosia beetles, and others, are attracted to stressed trees.  Stressed by cold or heat, soggy soil or dry soil, nutritional deficiencies, etc.

A lot of smuggling does go on, into the country, and into states that have their own border regulations.  The regulations exist to protect agriculture from new pests and diseases.  Countries that have carefully enforced these regs have saved themselves from a lot of trouble and expense and from a lot of poisoning.

Not all bringing in of plant materials without a permit can justifiably be accused of being "smuggling."

When a passenger writes a declaration that the passenger is bringing in plant material, but, nevertheless just gets waved through,
that is due to officials' refusals to perform their duties, not to passengers' acts of smuggling.

This has been going on for some 30 years, to reduce long lines and backups of arriving air passengers, after baggage pickup, that a minor official is sent
to stand among the crowd, vetting their declarations, and then selecting who should go to which line or to just be waved on out.  (The main interests are suspicions of illegal entry, or carrying explosives or weapons or illegal drugs or lots of cash.)

Many times in the late 1980's and early 1990's I came back from plant business trips bringing in seeds and graftwood or bare-rooted plants, working under my employer's seed importation and plant importation post-entry-quarantine permits, with pre-hired broker ready to pick up parcels at airport USDA office and transport to USDA "smokehouse" for careful inspection, including micro-scopic, and then to be picked up there by me  Things went reasonably smoothly.

But, then there was the last time I came in, under entirely the same documentation and arrangements.  A selector person was there, insistently trying to wave me on out.  I stubbornly insisted that my luggage must be inspected per plant importation regulations, and I showed him my permit.  When I became the only person going through the agriculture line, the new crew socializing there were suddenly very irritated and treating me as though I were a violator, even though I was holding the importation permit up vertically for them to see, and showing them the suitcase that needed to be sent over for inspection.  Perhaps they had never seen a permit?  I asked to see their supervisor, and was taken to their back-room office, where an experienced and familiar face quickly got things back onto normal procedure.

That experience was so unsettling that I have referred to it many times since--- never advantageously to me, as I end up getting viewed as some sort of rebel or nut-case, or as a confused person who has unrealistic expectations of governmental duties performance.

Meanwhile, dozens of new pests and infections are coming in--- profitably so, for the agricultural-chemical industries.

Several times, over the years, I have heard from persons in possession of plant materials that seemed odd.  Those persons have told me that they had declared the stuff, but were just waved through.  I have no occasion to doubt their sincerity--- and I am not a salaried offical at the airport.

Tropical Fruit Discussion / Re: Annona Pests
« on: March 11, 2022, 12:20:46 PM »
If soap spray dries quickly, it accomplishes little or nothing.  Only spray in slow-drying conditions.

Multiple micro-nutrient deficiencies--- especially Manganese deficiency.  Look for chelated micro-nutrients.  Also treat soil with granular Sulfur.

Don't fix what isn't broken.

Typical decline from planting in compost.  Not likely to improve until pruning, digging up, and planting on a sandy mound.

Give that compost to bananas;  they will love it.

If most or all of the leaves of a mango planted in the ground were killed, it does not need to be watered;  watering would just encourage root rots.

Watering well should be done days before a freeze.

Powdery Mildew.

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