ISSN:
1573-5036
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Summary A quantitative estimate is made of the amount of nitrogen symbiotically fixed by a legume crop growing under normal field conditions. The method involves simultaneous determinations of the “AN” values by the legume and a non-nodulating crop, using15N-labelled nitrogen fertilizer. The fertilizer is applied at a low rate to the legume crop to avoid interference with the symbiotic N fixation process, but at a normal rate to the non-nodulating crop. The amount of symbiotically fixed nitrogen expressed in kg N/ha is calculated by multiplying the difference in A value between the legume and the non-nodulating crop with the % utilization of fertilizer N by the legume crop.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01928534
