ISSN:
1573-5036
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Summary The effects of plants on NH4- and NO3-N transformations were studied on a clay loam soil pH 7.7, organic carbon 2.4%, and total N 0.25%. Without plants 80% of the extractable NH4-N from a 0.3 ppm addition was nitrified in one hour, and 100% in one day. The disappearance of NH4-N was increased from 20%, where plants were not grown, to 50% where barley plants were grown for two weeks. Only 5% of the NO3-N added to soil disappeared in the absence of plant growth, but 40% disappeared with plants. N also disappeared when added to soil from which growing plants had recently been removed. Several hypotheses, including transformation to gaseous forms, are advanced to explain the disappearance.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01372865
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