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FACTORS AFFECTING THE ABILITY OF PLANTS TO ABSORB PHOSPHATE FROM SOIL

1958; Wiley; Volume: 9; Issue: 1 Linguagem: Inglês

10.1111/j.1365-2389.1958.tb01902.x

2056-5240

R. Scott Russell, E. W. Russell, P.G. Marais,

Soil Carbon and Nitrogen Dynamics

Summary Barley, rye, and cabbage have been used as test plants to measure labile soil phosphate by the Larsen procedure. In some soils higher values are given by rye and cabbage than by barley. These differences are believed to reflect the greater ability of cabbage and rye to lower the free energy of phosphate in the external medium. Thus, in soils contai& ncaring large quantities of labile phosphate at a low potential, sources of phosphate that are inaccessible to barley are accessible to the other two species.