ISSN:
1573-5036
Keywords:
Microbial biomass
;
32P
;
33P
;
P flux
;
P transformation
;
Rhizosphere
;
Wheat
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Summary Wheat plants labelled with33P were grown in thin layers of soil amended with32P-labelled fertiliser. Roots were separated from the soil during plant growth by a porous membrane to overcome difficulties in measuring microbial P in rhizosphere soil. Over the 22 day growth period, net movement of33P out of healthy growing roots varied from 0.9–4.9% of the total33P translocated to the root. Over the same period the plants took up 12.0% and the microbial biomass 14.1% of the fertiliser32P. On drying and rewetting of the soil after the plants were harvested, a large proportion of root P moved into soil fractions while32P appeared to accumulate in the biomass and stable P forms.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02383229
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