Apple-Crop: Apple maggot in plums

[Los, Lorraine]

Hello all,

I am working with a grower with a significant apple maggot problem in part of 
his orchard.  In addition to apples, maggots (fly larvae) were also found in 
plums.  This is the first time I have seen this.  I am assuming they are apple 
maggot.  Can anyone help with the following questions?

1)   Do any other maggots infest plums?
2)   There are peaches & nectarines adjacent to this area.  I have not seen 
any literature suggesting that apple maggots get into peaches & nectarines, but 
want to be sure.  Has anyone seen apple maggots in peaches or nectarines at a 
heavily infested site?

We'll definitely hang AM traps in the plums next year!!

Thanks,
Lorraine


Lorraine Los

Fruit Crops IPM Coordinator

Plant Science Department, U-4067

University of Connecticut

Storrs, CT  06269-4067

(860)486-6449 (Phone)

(860)486-0682 (Fax)

lorraine@uconn.edu

Re: Apple-Crop: Apple maggot in plums

[Harold J. Larsen]

Lorraine,

You might have a different species of Rhagoletes fruit fly instead of 
the apple maggot species. You might be able to obtain adult flies to ID 
by placing the infested fruit onto moist, sandy soil put a plastic bag 
in a box to allow the larvae to finish growing and then crawl out of the 
infested fruit and down into the moist soil to pupate. Once the pupae 
are formed, you can keep them in a cool room for a couple of months 
(some of our entomologist participants may have more info on specifics 
here), sieve the soil to harvest the pupae, and then store them at room 
temperature in a screened lid container to let the adult flies emerge 
from the pupae. Once you have adult flies, compare the wing patterns. 
The wing patterns for Rhagoletes species are pretty specific and 
comparison with wing patterns for the emerged adults should facilitate a 
correct ID.


Harold L.

--
Dr. Harold Larsen, Interim Manager - WCRC
Res. Pathologist & Ext. Fruit Dis. Specialist
Colo. St. Univ., WCRC - Orchard Mesa
3168  B  1/2  Road
Grand Junction, CO  81503-9621
Ph:  (970) 434-3264, x-205
FAX:  (970) 434-1035
EMail:  harold.lar...@colostate.edu 




Los, Lorraine wrote:


Hello all,

I am working with a grower with a significant apple maggot problem in 
part of his orchard. In addition to apples, maggots (fly larvae) were 
also found in plums. This is the first time I have seen this. I am 
assuming they are apple maggot. Can anyone help with the following 
questions?


1) Do any other maggots infest plums?

2) There are peaches & nectarines adjacent to this area. I have not 
seen any literature suggesting that apple maggots get into peaches & 
nectarines, but want to be sure. Has anyone seen apple maggots in 
peaches or nectarines at a heavily infested site?


We’ll definitely hang AM traps in the plums next year!!

Thanks,

Lorraine

Lorraine Los

Fruit Crops IPM Coordinator

Plant Science Department, U-4067

University of Connecticut

Storrs, CT 06269-4067

(860)486-6449 (Phone)

(860)486-0682 (Fax)

lorraine@uconn.edu





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The 'Apple-Crop' LISTSERV is sponsored by the Virtual Orchard 
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RE: Apple-Crop: Apple maggot in plums

[Los, Lorraine]

Hello Harold, 

I will try to rear out to get adults. 

Thanks,
Lorraine

Lorraine Los
Fruit Crops IPM Coordinator
Department of Plant Science and Landscape Architecture, U-4067
University of Connecticut
Storrs, CT  06269-4067
(860)486-6449 (Phone)
(860)486-0682 (Fax)
lorraine@uconn.edu
 
-Original Message-
From: apple-crop@virtualorchard.net [mailto:apple-c...@virtualorchard.net] On 
Behalf Of Harold J. Larsen
Sent: Monday, August 31, 2009 2:27 PM
To: Apple-Crop
Subject: Re: Apple-Crop: Apple maggot in plums

Lorraine,

You might have a different species of Rhagoletes fruit fly instead of 
the apple maggot species. You might be able to obtain adult flies to ID 
by placing the infested fruit onto moist, sandy soil put a plastic bag 
in a box to allow the larvae to finish growing and then crawl out of the 
infested fruit and down into the moist soil to pupate. Once the pupae 
are formed, you can keep them in a cool room for a couple of months 
(some of our entomologist participants may have more info on specifics 
here), sieve the soil to harvest the pupae, and then store them at room 
temperature in a screened lid container to let the adult flies emerge 
from the pupae. Once you have adult flies, compare the wing patterns. 
The wing patterns for Rhagoletes species are pretty specific and 
comparison with wing patterns for the emerged adults should facilitate a 
correct ID.

Harold L.

-- 
Dr. Harold Larsen, Interim Manager - WCRC
Res. Pathologist & Ext. Fruit Dis. Specialist
Colo. St. Univ., WCRC - Orchard Mesa
3168  B  1/2  Road
Grand Junction, CO  81503-9621
Ph:  (970) 434-3264, x-205
FAX:  (970) 434-1035
EMail:  harold.lar...@colostate.edu 



Los, Lorraine wrote:
>
> Hello all,
>
> I am working with a grower with a significant apple maggot problem in 
> part of his orchard. In addition to apples, maggots (fly larvae) were 
> also found in plums. This is the first time I have seen this. I am 
> assuming they are apple maggot. Can anyone help with the following 
> questions?
>
> 1) Do any other maggots infest plums?
>
> 2) There are peaches & nectarines adjacent to this area. I have not 
> seen any literature suggesting that apple maggots get into peaches & 
> nectarines, but want to be sure. Has anyone seen apple maggots in 
> peaches or nectarines at a heavily infested site?
>
> We'll definitely hang AM traps in the plums next year!!
>
> Thanks,
>
> Lorraine
>
> Lorraine Los
>
> Fruit Crops IPM Coordinator
>
> Plant Science Department, U-4067
>
> University of Connecticut
>
> Storrs, CT 06269-4067
>
> (860)486-6449 (Phone)
>
> (860)486-0682 (Fax)
>
> lorraine@uconn.edu
>



--

The 'Apple-Crop' LISTSERV is sponsored by the Virtual Orchard 
 and managed by Win Cowgill and Jon 
Clements .

Apple-Crop is not moderated. Therefore, the statements do not represent 
"official" opinions and the Virtual Orchard takes no responsibility for 
the content.







--

The 'Apple-Crop' LISTSERV is sponsored by the Virtual Orchard
 and managed by Win Cowgill and Jon
Clements .

Apple-Crop is not moderated. Therefore, the statements do not represent
"official" opinions and the Virtual Orchard takes no responsibility for
the content.