ISSN:
1573-0867
Keywords:
alfalfa
;
gneiss
;
Italian ryegrass
;
maize
;
mineral K
;
pak-choi
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Abstract The ability of plant types to release mineral K from little weathered gneiss for a mixture of particle size fractions of less than 10 mm, as well as for two separated size fractions (2 mm〈D〈5 mm, and 1 mm 〈D〈2 mm) were compared in pot experiments with maize (Zea mays L. cv. ND60), pak-choi (Brassica campestrisL. ssp.chinensis (L.) Mokina. var. cammunis Tsen et Lee, cv. Wuyueman) and two alfalfa cultivars (Medicago sativa L. cv. Asta and Haifei). Release of mineral K was significantly stimulated by maize, pak-choi and ryegrass, implying a direct mobilization of mineral K by plant roots. The net release of mineral K was greatly influenced by plant species. Among these, the more profound release of mineral K was observed with maize and ryegrass. Besides, the mobilization of mineral K was negatively correlated with the particle size of gneiss. The difference in net release of K from gneiss between two size fractions decreased in the order: maize 〉 ryegrass 〉 pak-choi.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1009826111929
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