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The “Rhizosphere Effect” on the Nutritional Groups of Soil Bacteria
Author(s) -
Lochhead A. G.,
Rouatt J. W.
Publication year - 1955
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1955.03615995001900010011x
Subject(s) - rhizosphere , bacteria , agronomy , nutrient , biology , environmental science , ecology , genetics
The effect of the growing plant on the balance between certain nutritional groups of soil bacteria is discussed in the light of a paper by Wallace and King who reported findings at variance with those obtained in this laboratory. Since the “rhizosphere effect” is considered to be the influence exerted by the growing plant in its immediate environment, rhizosphere and control samples from field tests should be regarded as a unit. The control samples taken by Wallace and King bore no direct relation to the location of the plants whose rhizosphere effects were under study; their procedure was therefore radically different from that used in this laboratory and consequently any precise comparison of results is vitiated. One of the most characteristic rhizosphere effects is believed to be the preferential stimulation of bacteria requiring amino acids and data from experiments with a variety of crops are presented.