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MYCORRHIZAL INFECTION ON GROWTH AND NITROGEN FIXATION OF PUERARIA AND STYLOSANTHES AND UPTAKE OF PHOSPHORUS FROM TWO ROCK PHOSPHATES
Author(s) -
WAIDYANATHA U. P. de S.,
YOGARATNAM N.,
ARIYARATNE W. A.
Publication year - 1979
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.1469-8137.1979.tb07569.x
Subject(s) - mycorrhiza , phosphorite , phosphorus , symbiosis , stylosanthes , nitrogen fixation , phosphomonoesterase , agronomy , phosphate , inoculation , phosphorus deficiency , biology , nitrogenase , botany , horticulture , nitrogen , chemistry , fertilizer , bacteria , phosphatase , biochemistry , genetics , phosphorylation , organic chemistry
S ummary Growth and nodulation of Pueraria and Stylosanthes , and also nitrogenase activity of Pueraria grown in methyl bromide treated soil were severely retarded unless the plants were infected with vesicular–arbuscular (VA) mycorrhiza or given large amounts (500 mg per kg of soil) of rock phosphate. Added rock phosphate further stimulated growth, nodulation and nodule activity of mycorrhizal plants. Mycorrhizae also enhanced uptake of phosphorus, which was increased further by the addition of rock phosphate. The comparative levels of phosphorus in plants and growth responses were clearly different with respect to the two sources of rock phosphate in both mycorrhizal and non‐mycorrhizal plants. These observations refer in particular to Pueraria ; the treatment effects being less pronounced with Stylosanthes as the uninoculated plants were naturally contaminated with mycorrhizae, but to a lesser degree than those inoculated.