ISSN:
1573-5036
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Summary The nitrifying population of a low-fertility New Zealand grassland soil was found to be very small and the soil did not accumulate NO3-N when perfused in the laboratory with (NH4)2SO4. The population of nitrifying bacteria, and the ability of the soil to nitrify on incubation, could be increased by field treatment with urea. The increased population developed in the presence of urea appeared to persist longer if lime was also applied to the soil. The limiting effect of substrate concentration on the population of nitrifying bacteria, which was observed in this soil, may help to explain the failure of some other grassland soils to accumulate NO3-N.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01350243
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