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| Titel: |
Soil clay mineralogies in relation to fertility management: Effect of soil clay mineral compositions on potassium fixation under conditions of wetland rice culture |
| Auteur: |
Bajwa, Iqbal |
| Verschenen in: |
Communications in soil science and plant analysis |
| Paginering: | Jaargang 11 (1980) nr. 10 pagina's 1019-1027 |
| Jaar: |
1980 |
| Inhoud: |
To evaluate the impact of soil clay mineralogy on the utilization efficiency of potassium fertilizers by rice, potassium fixation studies were made on fourteen soil clays having a range of mineralogical compositions. Soil clay with monomineralic beidellite fixed the highest proportion (76%) of the added potash, followed by clays containing either dominant or major vermiculite (51-66%). Fixation was significantly less severe (<35%) in vermiculitic clays containing hydrous mica. All the clays with mineralogical suites without beidellite or vermiculite, but consisting of montmorillonite, chlorite, hydrous mica, halloysite, kaolinite, and x-ray amorphous material did not fix appreciable amounts (<18%) of the applied potassium. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
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