Graduate Thesis Or Dissertation
 

The concentration of nutrients in the tissue of ten white spruce provenances grown on an acid and a basic soil

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  • The experiment described in this paper was designed and carried out to study the ability of five provenances of white spruce of acid soil origin and five provenances of basic soil origin grown on an did and a basic soil to utilize and respond to the five macro-nutrient elements N, P, K, Ca and Mg as determined by analysis of the plant tissue produced. The purpose was to determine if some of the variability found in the growth performance of this species may be related to differential concentrations of required nutrients in the plant tissue. The ten provenances were grown in the two soils in three split plots. Two plots were unfertilized and the third was fertilized. Nutrient content of seed and plant tissue was obtained for the five elements. Exchangeable K, Ca and Mg and available P were determined for the two soils. The concentrations of nutrients in the seed of the ten provenances are similar except for calcium which was double in the basic provenances. This appears to be luxury consumption. No relationship was apparent between the concentrations of nutrients in the seed and the produced tissue. Analysis of variance revealed significant differences in concentrations of nutrients in the tissue between the soils (P, K, Ca and Mg) and with fertilization (P and K). The interaction of tree type X soil was highly significant for K. The well known K Ca and K - Mg interactions are prominent. However, the basic provenances contain more K when grown on the basic soil than did the acid provenances. These same basic provenances contain less K on the acid soil than did the acid provenances. It appears that the basic provenance possesses an inherited ability to obtain required quantities of this element in the face of possible adverse quantities of Ca and Mg. Ca, Mg and P concentrations in the tissue appear to reflect the supply available in the soil. Growth of the ten provenances was generally poor on the basic soil. Further study with a range of soils is required to confirm if the apparent variation between acid and basic soil origin provenances was of genetic or soil origin.
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