00974naa a2200133 a 450000100080000000500110000800800410001910000170006024501010007726000090017852005860018770000170077377300500079016489462000-06-06       1943    bl ---       0--  u    #d1 aDAVIS, R. M.  aPhytophthora parasitica inoculation and intensity of vesicular-arbuscular mycorrhizae in citrus.  c1943  aShoot weights, root weights, and percentages of healthy roots of mycorrhizal (Glomus fasciculatus) sweet orange inoculated with Phytophthora parasitica (20 or 50 chlamydospores g-1 soil) were greater than those of non-mycorrhizal seedlings at either inoculum density. However, the growth response to mycorrhizal infection was reduced 23 and 58% by inoculation with 20 and 50 chamydospores per g soil, respectively. Mycorrhizal infection was not reduced by P. parasitica at 20 chlamydospores per g soil, but was reduced 72% in seedlings inoculated with 50 chlamydospores per g soil.1 aMENGE, J. A.  tThe Imperial Mycological Institute, 1943, 7p.