ISSN:
1573-5036
Keywords:
Ammonium
;
Fertilizer-N efficiency
;
Flooded soils
;
Native soil N
;
N-15 isotope
;
N loss
;
Uptake
;
Urea
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Abstract Data from five field experiments using labelled nitrogen fertilizer were used to determine the relative effects of soil nitrogen and fertilizer nitrogen on rice yield. Yield of grain was closely correlated with total aboveground nitrogen uptake (soil+fertilizer), less closely correlated with soil nitrogen uptake and not significantly correlated with fertilizer nitrogen uptake. When yield increase rather than yield was correlated with fertilizer nitrogen uptake, the correlation coefficient was statistically significant.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02211694
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