EFFECT OF DIFFERENT AMENDMENTS ON YIELD AND COMPOSITION OF OATS GROWN ON A SOIL DERIVED FROM SERPENTINE MATERIAL
- 1 October 1968
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Soil Science
- Vol. 48 (3) , 301-305
- https://doi.org/10.4141/cjss68-041
Abstract
Additions of Ca(OH)2 and/or organic matter to an unproductive soil with a high content of extractable Ni and a low Ca:Mg ratio (< 0.5) increased the yield of oat tops about four-fold, doubled the Ca:Mg ratio (0.4 to 0.8) and markedly reduced the concentration of Ni in the plants. These changes in the plant were associated with marked reductions in extractable Ni and a two-to five-fold increase in the Ca:Mg ratio in the soil after cropping. Additions of CaSO4 improved Ca:Mg ratios in both plants and soil but had little effect on yield. Apparently, the higher soil pH following addition of Ca(OH)2 and the complexing effect of organic matter were each effective in reducing Ni toxicity.Keywords
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