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This is a response from Jan McCaman about the powdery mildew. Thanks Jay!! ________________________________ From: Jay McCaman [mailto:[log in to unmask]] Sent: Thursday, March 01, 2007 11:23 AM To: Vicki Morrone Subject: Re: What do youknow about Powdery mildew?? From Acres U.S.A. (Mar 84, p6) nitrogen applied at the wrong time can increase it. From The New Farm (Feb 95, p 42) 1% Neem oil in water can reduce it. From Acres U.S.A. (Oct 81, p 24) soil problems may include; low calcium, high magnesium, low boron, and very low copper. This can be influenced by the nitrogen mentioned above. It is my opinion that nutritional conditions are the root of disease pressures. Tissue testing could help. I have wondered about the tissue test standards. Are they based on averages and what will produce good yields or are the based on plants that are immune to insects and diseases. At the organic conference Saturday I plan to present data from an organic consultant that show the connection between sap pH, brix, and aphid pressure on beans. Jay ----- Original Message ----- From: Vicki Morrone <mailto:[log in to unmask]> To: [log in to unmask] Sent: Wednesday, February 28, 2007 11:10 AM Subject: What do youknow about Powdery mildew?? Dear Readers (those who farm/garden especially) Are any of you familiar with a treatment to prevent powdery mildew by applying a corn based chicken feed to the soil near the plants? We at MSU recd this query and cannot find or have heard of such info. Do any of you have info about this topic or something similar? Thanks for any answers. To share with everyone hit "reply all" to share with just Vicki please hit "reply" Vicki Vicki Morrone Organic Vegetable and Crop Outreach Specialist Michigan State University C.S. Mott Sustainable Food Systems 303 Natural Resources Bldg. East Lansing, MI 48824 517-353-3542 517-282-3557 (cell) 517-353-3834 (fax) http://safs.msu.edu/ http://www.mottgroup.msu.edu/ If you would like to access a searchable archive of the all the previous Mich-Organic listserv postings copy this URL and paste in your browser address field http://list.msu.edu/archives/mich-organic.html If you would like to access previous postings to the Mich-Organic listserv you can copy and paste the following URL into your browser address bar http://list.msu.edu/archives/mich-organic.html