Byron, Using mycorrhiza inoculate or just those already in the soil AND high phosphorus fertilizer either 'turns off' the fungi and causes them to go dormant or it kills them. You do not get a double effect. Growing plants in ways that foster mycorrhizal growth have many other benefits such as plant health, soil health and tilth. Sincerely, Louis Mensing -----Original Message----- From: Byron.Bromley <Byron.Bromley@Gsd-Co.Com> To: tomato@GlobalGarden.com <tomato@GlobalGarden.com> Date: Monday, April 19, 1999 9:55 AM Subject: [tomato] VAM >If VAM does a number on plants that have that low of P >rating in the soil, whats it going to do for gardeners that >use Miricale Gro 15-35-15 or Bloom 10-60(52?)-10, That >combination really should burn up your plants.