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Effects of vesicular-arbuscular mycorrhiza on the availability of iron phosphates to plants
N.S. BOLAN, A.D. ROBSON and N.J. BARROW
Plant and Soil
Vol. 99, No. 2/3 (1987), pp. 401-410
Published by: Springer
Stable URL: http://www.jstor.org/stable/42936496
Page Count: 10
You can always find the topics here!Topics: Phosphates, Plants, Clover, Agricultural soils, Mycorrhizas, Plant growth, Plant roots, Infections, Phosphorus, Potassium
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The effect of inoculation with a mycorrhizal fungus on the growth of subterranean clover and of ryegrass was measured using three sources of phosphorus with different solubilities. These were (in order of decreasing solubility): potassium dihydrogen phosphate, colloidal iron phosphate and crystalline iron phosphate. Mycorrhizal infection increased growth more for subterranean clover than for ryegrass for all sources of phosphorus. For both species the greatest benefit from mycorrhizal inoculation was obtained with the least soluble source of iron phosphate. It is suggested that the mycorrhizas were able to explore the soil more thoroughly and hence were able to locate and use the point sources of phosphorus in the insoluble iron phosphates.
Plant and Soil © 1987 Springer