ISSN:
1573-5036
Keywords:
Cations
;
Interaction
;
Mycorrhiza
;
Nodulation
;
Phosphate
;
Trifolium subterraneum
;
VAM
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Conclusions Mycorrhizal fungi increase the rate of phosphate uptake by roots (P inflow) over a range of soil P levels even when mycorrhizal growth increases no longer occur. It is likely that the fungi play a direct part in uptake and translocation of P to the roots. V.A.M. effects on nodulation and N2 fixation are largely indirect, probably resulting from improved P nutrition and growth at low soil P levels. Work on inorganic cation nutrition is much less advanced, but it is already clear that there are interactions between P nutrition and cation uptake which may also be indirect. The pattern of N assimilation (N2 fixation vis-à-vis NaNO3 or (NH4)2SO4 uptake) may modify cation/P interactions. Further work is required to distinguish cause and effect and to clarify the role played by V.A.M. fungi.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02374257
Permalink