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Soil microorganisms are less susceptible than crop plants to potassium deficiency.
- Source :
-
Archives of Agronomy & Soil Science . Dec2014, Vol. 60 Issue 12, p1807-1813. 7p. - Publication Year :
- 2014
-
Abstract
- To evaluate the relationship between the potassium (K) status in the microbial community and the exchangeable K concentration in soils, the effects of K addition on microbial activity were assessed in cultivated Andisols not having received K fertilizer. Potassium limitation was not observed in the microbial community, even in a soil amended with only nitrogen (N) and phosphorus (P) but not K since 1938, though crop plants in this soil showed severe K deficiency symptoms. Furthermore, in a soil amended with NP + compost, microbial activity was limited by K only after limitation of carbon (C) and N. These results suggest that soil microorganisms demand more C and N than K, even in soils with low K availability, and also that the soil microbial community is less susceptible to K deficiency than are crop plants. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03650340
- Volume :
- 60
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- Archives of Agronomy & Soil Science
- Publication Type :
- Academic Journal
- Accession number :
- 96936160
- Full Text :
- https://doi.org/10.1080/03650340.2014.918960