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Effect of vanadium on the growth of soybean seedlings

J. F. Wang and Z. Liu
Plant and Soil
Vol. 216, No. 1/2 (1999), pp. 47-51
Published by: Springer
Stable URL: http://www.jstor.org/stable/42950592
Page Count: 5
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Effect of vanadium on the growth of soybean seedlings
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Abstract

Pot experiments were conducted in a glasshouse to investigate the effects of vanadium (V) on the growth of soybean seedlings in two soils. As the concentration of V added to the fluvo-aquic soil (Fluvaqents) exceeded 30 mg V kg⁻¹ soil, the dry matter yields of shoots and roots were significantly decreased (>1% LSD), and the leaves of soybean seedlings turned yellow and withered and the roots were short and beginning to rot. In the red earth (Oxisols), no marked stunting was observed (<5% LSD), even when the concentration of V added to the soil was as high as 75 mg V kg⁻¹. As the concentrations of vanadium in soybean seedling were closely related to the concentration of soluble vanadium in soil solutions at pH 5-9 in the soil equilibrium solution, the fluvo-aquic soil had lower adsorption capacity for V than the red earth, there was much higher concentration of soluble V in the soil solution, so the symptom of V toxicity appearing in the plants grown on fluvo-aquic soil was easily observed. In addition, the ratio of the total Mo to the total V in shoots decreased slightly with increase of concentration of V added to soils.

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