Movement of Molybdenum in the Soil and its Effect on Availability to the Plant
1964
Lavy, T. L. | Barber, S. A.
The processes involved in Mo availability to corn and soybeans growing in soil were investigated. Both mass-flow and diffusion were involved. Mass-flow caused Mo to accumulate at or in the root when the saturation extract contained more than 4 ppb. Mo. Diffusion patterns were usually obtained by autoradiographic procedures when the content was below 4 ppb. The saturation extracts of the soils investigated ranged from 2.2 to 8.1 ppb. Mo. The content of labile Mo in the soil varied from 41 to 211 ppb. of soil. The values of Dp/b for Mo varied from 0.5 to 8.4 × 10⁻⁷cm.² sec.⁻¹ and were much larger than for phosphorus.
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