Full TGIF Record # 35420
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Publication Type:
Author(s):Hassink, J.
Author Affiliation:DLO Research Institute for Agrobiology and Soil Fertility(AB-DLO), The Netherlands
Title:Effect of the non-fertilizer N supply of grassland soils on the response of herbage to N fertilization under mowing conditions
Source:Plant and Soil. Vol. 175, No. 2, August 1995, p. 159-166.
# of Pages:8
Publishing Information:Dordrecht, Netherlands: Kluwer Academic Publishers
Related Web URL:http://link.springer.com/article/10.1007/BF00011351
    Last checked: 10/14/2015
    Notes: Abstract only
Keywords:TIC Keywords: Nitrogen recovery; Grassland soils; Nitrogen uptake; Nitrogen efficiency; Nitrogen fertilizers; Application rates
Abstract/Contents:"I tested whether the non-fertilizer N supply of grassland soils (NFNS; N uptake on unfertilized plots)affects the relationships between N uptake and dry matter production, N application and N uptake, N application and dry matter production, as well as the optimum fertilizer application rate. At low N uptake rates the amount of dry matter production per kg of N uptake was negatively correlated with NFNS; at higher N uptake levels the correlation was not significant. The apparent nitrogen recovery of fertilizer N was not correlated with NFNS. The optimum fertilizer application rate was correlated positively with the maximum dry matter production (Max DM) and negatively with NFNS. The relationship optimum fertilizer application = -.81-.08 × NFNS + 0.0375 × Max DM accounted for 89% of the variance in optimum fertilizer application rate between soils at a marginal N effect of 7.5 kg dry matter per kg N applied. So an increase in NFNS of 100 kg N resulted in a decrease of the optimum N application rate of 80 kg N."
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hassink, J. 1995. Effect of the non-fertilizer N supply of grassland soils on the response of herbage to N fertilization under mowing conditions. Plant Soil. 175(2):p. 159-166.
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