The comparative use of nitrate, ammonium and urea fertilizers by oats and wheat as determined by 15N‐techniques
1980 ◽
Vol 11
(3)
◽
pp. 231-250
◽
Keyword(s):
2005 ◽
Vol 125
(1)
◽
pp. 21-30
◽
1996 ◽
Vol 28
(1)
◽
pp. 137-139
◽
Keyword(s):
1990 ◽
pp. 181-198
◽
Keyword(s):