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Uptake of fertilizer nitrogen and soil nitrogen by rice using15N-labelled nitrogen fertilizer (1980)

Reddy, K. R. ; Patrick, W. H.

Springer

Plant and soil 57 (1980), S. 375-381

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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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