http://www.freepatentsonline.com/6300121.html
http://www.ipo.uc.edu/index.cfm?fuseaction=technologies.results&item_number=093038 http://library.pchrd.dost.gov.ph/index.php/news-archive/724 Generally, lead in soil is hardly taken up by plants. Even in farm soils amended with sewage sludge, this metal is minimally taken up by roots — the reasons being the presence of organic matter (OM sequesters the metal to an unavailable form) and the high pH of soil (typically around pH 5.5 to seven). Ken Hargesheimer -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://list.communitygarden.org/pipermail/community_garden_list.communitygarden.org/attachments/20090430/c9791245/attachment.html> _______________________________________________ The American Community Gardening Association listserve is only one of ACGA's services to community gardeners. To learn more about the ACGA and to find out how to join, please go to http://www.communitygarden.org To post an e-mail to the list: [email protected] To subscribe, unsubscribe or change your subscription: http://list.communitygarden.org/mailman/listinfo/community_garden_list.communitygarden.org
