ISSN:
1573-5036
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Summary Pot experiments, using Zn65 were conducted on maize (Ganga-5) with different treatment combinations of phosphorus and zinc in sand and soil culture for two consecutive years (1972 and 1973). The deficiency of zinc was induced and a significant reduction in yield was recorded at a high level of P application. In the zinc-deficient plants, the concentration of zinc significantly increased in the roots and the nodes and decreased in the leaves and the internodes. Contrarily, in healthy plants the distribution pattern of the level of zinc and phosphorus in the roots, nodes, internodes, and leaves was recorded to be acropetal and basipetal respectively. In zinc-deficient plants, a significant rise in the pH of leaves and a decrease in the zinc uptake were also recorded. The autoradiographs and radiochemical analysis showed that a high level of P rendered the applied zinc unavailable to the leaves by immobilizing almost 40 per cent or more of the total absorbed zinc in the roots and 20 per cent or more at the nodes of the stem than that with 12 and 6 per cent in the roots and the nodes respectively at the normal dose of P supply (30 ppm P).
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01928525
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