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Effect of Form of Nitrogen and pH on Growth of Blueberry Plants
Author(s) -
Oertli J. J.
Publication year - 1963
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1963.00021962005500030031x
Subject(s) - citation , nitrogen , mathematics , library science , computer science , chemistry , organic chemistry
P can utilize either ammonium or nitrate nitrogen and they grow well in culture solutions over a considerable pH range. In nature, there are, however, a number of plant species which occur predominantly on acid soils and are, for this reason, occasionally called acid loving plants. The family of the Ericaceae has a large number or representatives of such plants. Cain' investigated the nitrogen nutrition of blueberries and explained the restriction of this species to acid soils through specificities in the nitrogen nutrition. He came to the conclusion that NO3-N was a poor source of N for blueberries and that it might even be unavailable or injurious because it raised the pH within the leaves and caused iron precipitation. Cain, furthermore, suggested that blueberries are restricted to acid soils because in these soils available N is mainly present in the more suitable form of NH4-N. Similar claims were