The absorption characteristics of copper by alfalfa [Medicago sativa] and orchardgrass [Dactylis glomerata]
1990
Harada, I. (College of Dairying, Ebetsu, Hokkaido (Japan)) | Shinohara, I. | Okada, S.
Alfalfa (Medicago sativa L.) and Orchardgrass (Dactylis gromerata L.) were grown on by 8 fertilizer treatments in 4 soil types, for 5 years from 1977. The main results were as follows: 1) Copper concentrations in forage grown on different soils were 4.35+-3.19 - 8.52+-1.81 ppm in alfalfa and 4.85+-2.46 - 7.46+-2.46 ppm in orchardgrass. 2) Copper concentration in alfalfa by different fertilization was 7.49+-1.11 ppm. The concentration of MCF, CF and -N plots were lower than those of the average treatment plot, also, that of -P plot and NF plot were higher than those of the average. 3) Copper concentrations absorbed by plant were 7.43+-3.06 ppm in alfalfa and 6.69+-2.55 ppm in orchardgrass. Namely, alfalfa showed a higher uptake than that of orchardgrass, and interspecific difference of copper absorption by plant was recognized. But the difference was not clear in standard deviation. 4) Copper content in alluvial soil was 2.63 ppm and was higher than other soil. Namely, the contents of copper were 2.47 in alluvial soil, 0.78 ppm in peat soil and 0.33 ppm in diluvial soil respectively. 5) Copper contents in soils under different fertilization were lower in MCF and -N plots, and higher in SO4, Cl and NF plots
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