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Messages - Guanabanus

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126
Tropical Fruit Discussion / Re: Guava dieback
« on: November 13, 2017, 10:39:55 AM »
You can also drench with an Azadirachtin-containing product such as Aza-Sol or Molt-X.   Azadirachtin is the true extract from Neem seed.  Do not substitute with Neem seed oil, even if the word "extract" is included in the oil product's name.

127
Tropical Fruit Discussion / Re: Guava dieback
« on: November 10, 2017, 01:32:42 PM »
Soil drenches and foliar sprays of seaweed would probably help.

Potassium sulfate is allowed in organic production to address a proven need.  Certifiers prefer a soil test or a tissue test.

And Potassium Chloride / "muriate of potash" is a natural, mined substance.  It works O.K. when appled frequently in very small amounts.  Too much, and it produces the famous "fertilizer burn" from excess Chloride.

128
Tropical Fruit Discussion / Re: Guava dieback
« on: November 10, 2017, 11:28:32 AM »
If the 20% Potassium fertilizer, mentioned above, is fast release, it is all gone after 6 inches of rain.

Both the posters' pictures probably show deficiencies of Potassium and some other elements, probably including Magnesium deficiency.  This can be from lack of these in the soil, or because of inability of the plant to absorb them, due to root problems, such as nematode attack.

129
PineIslander, does that 'Juliette' tree have any trunk damage on that side of the tree, such as an imbedded strap?

130
The green spots on the new growth look like what often happens from nutritional sprays.

131
Tropical Fruit Discussion / Re: Lemon Zest And Lemon Meringue Mangoes
« on: November 10, 2017, 08:48:07 AM »
Yes, anything that can go wrong, will go wrong sometime.   Besides the epigenetic, environmentally-induced changes, mutations also can occur in any clonal embryo, just as mutations can occur in any branch of a tree.

Notice the different 'Nam Docmai' clones.   We don't know if these arose from self-pollinations or from mutations.

132
Tropical Fruit Discussion / Re: Any success on rollinia cross pollination?
« on: November 08, 2017, 10:33:13 PM »
No.   Lots of attempts.

133
Tropical Fruit Discussion / Re: Guava dieback
« on: November 08, 2017, 10:31:10 PM »
Yes.

Add lots of compost, which suppresses nematode reproduction.

134
Tropical Fruit Discussion / Re: Lemon Zest And Lemon Meringue Mangoes
« on: November 08, 2017, 10:24:39 PM »
Careful....

A clonal embryo in a polyembryonic seed is an exact genetic copy of the maternal parent, which is the tree that bore the fruit in which the seed was found.

A zygotic embryo in a polyembryonic seed is a mix of the maternal parent (seed parent, which provided the ovule) and the paternal parent (which provided the pollen for "plant sex").

There is no such thing as "The Original parent", except as refering to the seed parent, in the case of a clonal embryo ("on-type").  Otherwise, it is "the parents" or "the grandparents" ....

People do get confused, because the word "clone" is often used instead of "variety";  and "clonal propagation" is sometimes said instead of "vegetative propagation."

135
Tropical Fruit Discussion / Re: Please ID unknown flowering tree
« on: November 08, 2017, 10:05:10 PM »
The leaves look like Cacau, but that white flower is not.

The tree also looks like Sunsa / Sunsapote, but I am not familiar with that tree's flower.  ______ platypus.

136
The trunk does look scratched by cats, etc.  If it seems to be on-going, applying stinky sprays to trunk and soil might stop it.  Spraying trunk with fungicides might give it a better chance to heal.

The leaves are deficient in pretty much everything, due to root starvation, from the downward movement of the sap through the phloem having been interrupted by the bark damage.

137
The thicker trunk appears to be the scion.   Double-check when the new foliage grows.

138
"Bark graft" is technical jargon;  it does not imply that anyone is trying to get a graft to take on top of bark.

139
Tropical Fruit Discussion / Re: Great Grafting knife for under $6.00
« on: October 31, 2017, 06:57:42 PM »
Also X-Acto #2 handle.  Blades are good for de-suckering, but never for grafting--- you will cut yourself.

140
I haven't seen any fruiting-size tree of 'Guava' mango.

The others you mentioned have normal, medium vigor and all the usual canopy shape.

141
Those products sound good.

These should reduce the spread of the infection, but aren't likely to kill what is already there.

If only a few leaves are affected, cut them off and put them in the city trash.

142
Little Gem, not little jim.

The initial evaluation of the Phoenix tree by Gary Zill was unfavorable, so he chain-sawed it off near ground level.  From there it grew again and fruited. 
Then he liked it a lot!

143
GOZP, your picture of tender new growth probably shows Iron deficiency, and possibly the other deficiencies I already mentioned.

144
Probably Mango Bacterial Black Spot

Spray with Copper and other anti-bacterials

145
Not fruit fly--- they are only interested in ripening fruit.

Possibly damage from Psylids or stink bugs, etc.

Possibly fungal infection, such as anthracnose.  Spray with Copper or other fungicide, at mild rates, to not harm the flowers.

146
Probably deficiencies of Copper and Zinc.

Please photograph again when the leaves harden up.

147
Tropical Fruit Discussion / Re: How to open a mango seed. . . .
« on: October 20, 2017, 10:29:49 PM »
After the clippers, an oyster knife sometimes is handy.

148
Tropical Fruit Discussion / Re: Any Info on Cotton Candy Mango?
« on: October 20, 2017, 10:27:22 PM »
It would probably stiffen up with less Nitrogen, and more Copper, Calcium, and soluble Silicate.

149
Tropical Fruit Discussion / Re: Birula vs Lisa
« on: October 20, 2017, 07:13:00 AM »
The 97---1 atemoya, selected by the late Bob and Vivien Murray on Pine Island, Florida, is also delicious.

The skin of the fruit is highly susceptible to fungi.

I am not familiar with Birula / Super Lisa.

150
Tropical Fruit Discussion / Re: Cherimoya fruit problem
« on: October 20, 2017, 07:01:06 AM »
Probably deficiency of Boron and Calcium.

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