ISSN:
1573-5036
Keywords:
Biological nitrogen fixation
;
Blue-green algae
;
Deep placement
;
Nitrogen fertilizers
;
Wetland rice
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Summary The effect of different methods of nitrogen fertilizer application on the algal flora and biological nitrogen fixation (Acetylene-reducing activity) in a wetland rice soil was studied in pot and field experiments. Broadcast application of urea inhibited nitrogen fixation and favored the growth of green algae. In contrast, deep placement of urea supergranules (1–2 g urea granules) did not suppress the growth of N2-fixing blue-green algae and permitted acetylene-reducing activity on the soil surface to continue virtually uninhibited.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02139650
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