Getting the first problem out of the way
# 1 Do not Shake pawpaw tree,and look up 3 hard ones almost broke my nose! (eyes teared up)
#2 The pawpaw peduncle borer, Talponia plummeriana, may be the most severe pest (USNM image).
The larvae, which reach a length of 5 mm, feed in fleshy parts of the flower, causing flowers to drop.
This borer is in Whole fruit (so no opening )
Cliff England (Breeder & associated with selling Jerry Lehman seeds one of which is 812 grams almost a kilo)
which has many tree's said it is rare so should NOT be a worry in the USA)
The
USA may have natural moth predators so shipping fresh fruit could be a concern.
Was freaking out when in the woods opened up a fruit for a taste ,
and found two long skinny worms .
see Picture Below On next post
#3
Talponia batesi (Оlethreutidae) was taken in a cherimoya } from Мехico
#4
See also This post
New guanabana disease
http://tropicalfruitforum.com/index.php?topic=32093.msg352791#msg352791#6 like every thing white flies eating roots , and seeds
Using dry sand on new seed bed (I have a propagation method , but that may need a new link to)
#6 North western USA or (better Known as Pacific Northwest PNW region )
Blue stain
pretty sure carried by a fungus on Pine tree's Native there.)
If I can find good links about it.
(but here for now) KYSU
By the way about grafting
A lot of tree's people Graft if they do not like the Variety when Large
Jerry Lehman (midwest) said he doesn't (not with PAWPAW), and His tree's where old Big looking
KYSU (college) said tree's decline after 15 years (on web site)
I saw them They look like they graft onto older root stock
at least the orchard where I searched for fallen old fruit for seeds.
This is KY though (not too far from Jerry's) , I am not certain if they have Hybrids of those Species of pine
or because I read the wood is softer (I know little about grafting so far -- pines soft and grafts well long term ?)
(Sadly Jerry Lehman past away Rest in Peace Jerry Lehman.)
------------------------------------- see link about BLUE STAIN go to second page ------------------
Fungus from conifer has been associated with Blue stain Ceratocystic & leptographium has been to blame.
http://www.pawpaw.kysu.edu/PDF/postman03.pdf 
Topic: Custard apple Family Annonaceae tree diseases / problems Talponia worm in fruit. (Read 739 times)