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COMPARATIVE EFFECTS OF FOLIAR‐OR SOIL‐APPLIED NITRATE ON VESICULAR‐ARBUSCULAR MYCORRHIZAL INFECTION IN MAIZE
Author(s) -
AZCÓN R.,
GOMEZORTEGA M.,
BAREA J. M.
Publication year - 1982
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1982.tb03414.x
Subject(s) - glomus , inoculation , biology , nitrate , mycorrhiza , shoot , agronomy , phosphorus , fungus , nutrient , arbuscular mycorrhizal , botany , symbiosis , horticulture , bacteria , chemistry , ecology , genetics , organic chemistry
SUMMARY Various concentrations of nitrate were applied either to the rooting medium (soil) or to the foliage of maize ( Zea mays L.) plants inoculated or not inoculated with the vesicular‐arbuscular mycorrhizal fungus Glomus mosseae. Certain levels of foliar‐applied nitrate and of soil‐applied nitrate had similar effects on growth of non‐mycorrhizal plants and on concentrations of nitrogen and phosphorus in their shoots. However, when the effects of these concentrations on inoculated plants were compared, plants with soil‐applied nitrate always developed much less infection. These results are further evidence that soil nitrate influences mycorrhizal development by acting on the establishment of infection rather than on spread within the root.