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Evaluation of Urea-Urea Phosphate as a Nitrogen Source for No-tillage Production1

โœ Scribed by Urban, W. J.; Hargrove, W. L.; Bock, B.R.; Raunikar, R.A.


Book ID
121520123
Publisher
The American Society of Agronomy
Year
1987
Tongue
English
Weight
184 KB
Volume
51
Category
Article
ISSN
0361-5995

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Urea as a nitrogen source for the phytop
โœ S. Kristiansen ๐Ÿ“‚ Article ๐Ÿ“… 1983 ๐Ÿ› Springer-Verlag ๐ŸŒ English โš– 723 KB

Ambient concentrations of urea in the inner Oslofjjord, Norway, showed a pronounced yearly cycle in 1980, with values in the range 0.1 to 10.0ktg-atNl-1; this cycle resembled that of ammonia although urea concentrations were usually lower. The uptake of urea by phytoplankton was investigated using l