Pretreatment of soil samples before NO3-N analysis.
1981 ◽
Vol 29
(1)
◽
pp. 15-22
Keyword(s):
N Level
◽
Storage of sandy, loam and clay soil samples at 35 deg C or 70 deg C for 2-3 days reduced the NO3-N level in the soils. Freezing (-20 deg C), refrigeration (-4 deg C) or storage at room temperature for 2-3 days had little effect on NO3-N levels, although low or room temperature storage for 2 months increased NO3-N levels in the loam and clay soils. Freezing or refrigeration of the sandy soil for 2 months reduced NO3-N levels, while long storage at room temperature markedly increased NO3-N levels in this highly organic soil. (Abstract retrieved from CAB Abstracts by CABI’s permission)
2020 ◽
Vol 41
(3)
◽
pp. 131-152
1981 ◽
2013 ◽
Vol 46
(50)
◽
pp. 505307
◽
2011 ◽
Vol 76
(4)
◽
pp. S262-S268
◽
Keyword(s):
Keyword(s):
Keyword(s):
Keyword(s):
2019 ◽
Vol 292
◽
pp. 012042
2007 ◽
Vol 55
(20)
◽
pp. 8231-8236
◽