RE: Apple-Crop: Mystery disease?
Hi Claude I agree with Dave on dapple apple viroïd hypothesis You will find here after a link on the description of the disease in our book on Viruses diseases of fruit trees. You are lucky its one of very few books that were published in English...!! See in the last page the table with variety sensitivity https://docs.google.com/viewer?a=vpid=explorerchrome=truesrcid=0Bx19mxjKQl22M2MwYTJkOTktNDkyZC00MDE2LTk1OTctNGVlY2Q4Y2IwNmNihl=enauthkey=CNOH89UE Hope this helps, and that the link will work for you. JM Jourdain Jourdain**(at)**Ctifl.fr -Message d'origine- De : apple-crop@virtualorchard.net [mailto:apple-c...@virtualorchard.net] De la part de Claude Jolicoeur Envoyé : dimanche 5 décembre 2010 20:28 À : Apple-Crop Objet : Apple-Crop: Mystery disease? Dear apple-croppers... Last year at this time of the year, we had a fun thread on a mystery apple. This year, I would propose one on a mystery disease... Hopefully it will trigger just as much interesting discussion! I have taken pictures showing the symptoms/damage. Please look here: http://picasaweb.google.com/cjoliprsf/AppleDisease2010 Let me give you a little information on this: - Pictures were taken on August 14 2010 - The size of the apples on the picture is about 1 inch across - The apples didn't grow any bigger during fall - All the apples show the same symptoms - There is only one tree affected in the orchard (a small 1 acre orchard) - Affected variety: Wealthy (there are other Wealthy trees around that are normal) - This appeared about 5 years ago and reappears every year on this particular tree - The affected apples ripen later than normal - actually, they don't really ripen, but they stay attached on the tree until snow. - The foliage is otherwise healthy and the tree normally vigorous - Other trees about 20 feet away do not show any similar symptoms Thanks for looking at this. Claude Jolicoeur Orchardist and cider maker Zone 4, Quebec -- The 'Apple-Crop' LISTSERV is sponsored by the Virtual Orchard http://www.virtualorchard.net and managed by Win Cowgill and Jon Clements webmas...@virtualorchard.net. 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 http://www.virtualorchard.net and managed by Win Cowgill and Jon Clements webmas...@virtualorchard.net. Apple-Crop is not moderated. Therefore, the statements do not represent official opinions and the Virtual Orchard takes no responsibility for the content.
RE: Apple-Crop: Patulin in Apple
Hi Jose In very few words... from my basic knowledge For apple the main source of patulin is penicillium fungi mould in our conditions (western Europe), this could be different in other climates. Other fungi are producing toxins... To avoid the occurrence of penicillium mould on fruit, in my knowledge, its only a storage problem, not an orchard one. Mainly You can take prophylaxis arrangements : Clean the storage room, and measure the efficiency through air intake microbial analysis Keep clean the sorting/packing machines Avoid bruises, micro wounds on fruits that can be open doors to fungi And then Sort out fruit that are colonized by the fungi. Of course fungicide can help. Penicillium strains can be resistant to some chemical families. You have to check the specific regulations for post harvest drenches. But in our conditions, with good storage conditions, patulin would not be a problem. It can be a plague in very bad storage for industrial process, kind of conditions that make growers scream... JM Jourdain Ctifl France De : apple-crop@virtualorchard.net [mailto:apple-c...@virtualorchard.net] De la part de Jose Manuel Pereira Cardoso Envoyé : samedi 4 décembre 2010 23:39 À : Apple-Crop Objet : Apple-Crop: Patulin in Apple Hi Patulin is a mycotoxin produced by fungi (or molds) commonly found on apples. I ask if someone know some tecnology to reduce patulin in storage house in cold room. Best regards -- JMP CARDOSO
Re: Apple-Crop: Useful review on colony collapse disorder
Good review of CCD. We should all pause and consider every time we add a product to the spray tank. On a side note I was waiting for a sandwich in a shop in Hollis NH and was perusing the cooler where they have some very interesting imported beer and saw and purchased an Irish cider known as Magners Oringinal. Even my wife enjoyed it and she is not one for much beyond wine. What can Con tell us abut it? Art Kelly Kelly Orchards Acton, ME 2010/12/2 Con.Traas con.tr...@ul.ie http://www.lab-times.org/editorial/e_173.html Con Traas, Life Science Dept., University of Limerick. Office SR2-009 Ph. 061 202905 M. 086 6091998
Re: Apple-Crop: Patulin in Apple
Hi! Is this true? both fungicides pulled in europe? I know imazalil is used a lot in citrus as well. That's big news. Vincent Le 2010-12-06 à 12:15, Jose Manuel Pereira Cardoso a écrit : Thanks Jean-Marc My problem is when fungicides are no longer approved by the European Commission (imazalil, thiabendazole) in post-harvest treatments, and them fungi will rise, and high levels of patulin willl be found, and I am searching integrated solutions to reduce populations of fungi, and in turn reduce patulin levels. Vincent Philion, agr., M.Sc. Phytopathologiste Laboratoire de production fruitière intégrée Institut de recherche et de développement en agroenvironnement 335, Rang des vingt-cinq Est Case postale 24 Saint-Bruno-de-Montarville (Québec) J3V 4P8 Tél. bureau: 450 653-7368 poste 224 Tél. laboratoire: 450 653-7368 poste 229 Cellulaire: 514-623-8275 Télécopie: 450 653-1927 Verger du parc national du Mont-Saint-Bruno 330, Rang des vingt-cinq Est Case postale 24 Saint-Bruno-de-Montarville (Québec) J3V 4P8 Téléphone et télécopieur : 450 653-8375 Courriel: vincent.phil...@irda.qc.camailto:vincent.phil...@irda.qc.ca Site Internet: www.irda.qc.cahttp://www.irda.qc.ca Avez-vous réellement besoin d'imprimer ce courriel? Si oui, imprimez-le recto-verso! AVIS DE CONFIDENTIALITÉ Ce message peut contenir de l'information de nature privilégiée et confidentielle. Si vous n'êtes pas le destinataire visé ou croyez l'avoir reçu par erreur, nous vous saurions gré d'en aviser l'émetteur. Si ce message vous a été transmis par erreur, veuillez le détruire sans en communiquer le contenu à d'autres personnes ou le reproduire.
RE: Apple-Crop: Mystery disease?
Just for interest, it seems this mystery disease is solved, but we had some Empire apples treated with Agogee last year that looked very similar. Learn from our mistakes! Doug and Leslie Balsillie -Original Message- From: apple-crop@virtualorchard.net [mailto:apple-c...@virtualorchard.net] On Behalf Of Claude Jolicoeur Sent: Monday, December 06, 2010 10:44 AM To: Apple-Crop Subject: Re: Apple-Crop: Mystery disease? A 22:41 10.12.05 -0500, vous avez écrit : I suspect that the apple tree that bears these fruit is infected with the dapple apple/scar skin viroid. Thank you very much Dave and Jean-Marc. The informations you have provided are very informative and useful. In addition, I have found some pictures of this disease on the internet and unfortunately I have to agree with your diagnosis. I say unfortunately because from what I can see, there is no other issue than destruction of the affected tree. There doesn't seem to be any cure! And there is a risk of this viroid to spread to the rest of the orchard - a risk I am not ready to take! This seems to be a pretty exotic and rare disease. I probably have introduced it when I grafted some Wealthy apple on this seedling root in 1986. The source tree was obviously infected. To Jean-Marc, I also found a fiche descriptive en francais from the INRA here: http://www-intranet.angers.inra.fr/dossiers/virus/fichvir4.html where the first picture corresponds to the damage I can see on my tree. Also, the second picture on page 2 of the CTIFL document is very similar to my problem. Thanks for the help. Claude Jolicoeur Orchardist and cider maker Zone 4, Quebec -- The 'Apple-Crop' LISTSERV is sponsored by the Virtual Orchard http://www.virtualorchard.net and managed by Win Cowgill and Jon Clements webmas...@virtualorchard.net. 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 http://www.virtualorchard.net and managed by Win Cowgill and Jon Clements webmas...@virtualorchard.net. Apple-Crop is not moderated. Therefore, the statements do not represent official opinions and the Virtual Orchard takes no responsibility for the content.
Apple-Crop: Apogee: cracking?
I would like to hear more about Apogee-induced cracking of Empire. Does anyone know the particular set of circumstances that result in cracking? I have safely used one or two applications at 4 ounces per 100 gallons on Empire a couple of years, but, having heard of possible cracking, I have not used the 3rd or 4th sprays that would be needed for good vegetative control of my trees on MM106. David Kollas Kollas Orchard Tolland, Connecticut On Dec 6, 2010, at 9:50 PM, Balsillie wrote: Just for interest, it seems this mystery disease is solved, but we had some Empire apples treated with Agogee last year that looked very similar. Learn from our mistakes! -- The 'Apple-Crop' LISTSERV is sponsored by the Virtual Orchard http://www.virtualorchard.net and managed by Win Cowgill and Jon Clements webmas...@virtualorchard.net. Apple-Crop is not moderated. Therefore, the statements do not represent official opinions and the Virtual Orchard takes no responsibility for the content.
