ISSN:
1573-5036
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Summary Compared to the behavior of excised barley roots, K uptake by excised roots of vetch was far more responsive to pH and required ambient Ca concentrations 100 fold higher to overcome the deleterious effect of low pH. At pH values above 7, however, the addition of very low concentrations of Ca markedly depressed the uptake of K by vetch roots, less so for barley. Potassium uptakes by vetch roots in the presence of Ca led to K being sequestered into a non-exchangeable form and this process was dependent upon aerobic metabolism. The degree of specificity for Ca appeared to be much higher for vetch roots than for barley roots. Some of the differences in response to Ca between vetch and barley may be related to the higher exchange capacity of vetch roots.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02185823
