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| Author(s): | Prins, W. H.;
van Burg, P. F. J. |
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| Author Affiliation: | Institute for Soil Fertility, Haren (Gr.), The Netherlands |
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| Title: | The residual effect of fertilizer nitrogen on grassland within one growing season |
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| Section: | Fertilization and water-regime regulation on grassland: Nitrogen fertilization of grass stands with special reference to yield response
Other records with the "Fertilization and water-regime regulation on grassland: Nitrogen fertilization of grass stands with special reference to yield response" Section
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| Source: | International Grassland Congress, Proceedings. Vol. 2, 1977, p. 971-978. |
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| # of Pages: | 8 |
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| Publishing Information: | Leipzig, German Democratic Republic |
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| Keywords: | TIC Keywords: Nitrogen fertilization; Residual effects; Grasslands; Fertilization rates; Soils; Regrowth; Pastures; Nitrogen uptake
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| Abstract/Contents: | "In field experiments it has become clear that at a high level of N fertilization an N reserve can be built up in the soil-plant system which can have a residual effect on the regrowth of a grazed or mown pasture. This residual effect is most apparent when the regrowth is not fertilized with N. In the experiments on clay soil comparisons were made between the amounts of residual N of high- and low-N pretreatments. This was done by calculating the difference between N application and N uptake during the pretreatment period. In the high-N pretreatments this difference was about 80 to 110 kg N per ha higher than in the low-N pretreatments. In the absence of new fertilizer N the residual effect of that quantity of N was found to be equivalent to 25 to 70 kg N per ha at 5 weeks of regrowth. Assuming no losses by leaching or denitrification, this meant a recovery of about 55% in July/August, decreasing to about 25% in September. When fertilizing with N, the residual effect became smaller because it was obscured by the freshly applied N." |
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| Language: | English |
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| References: | 8 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Prins, W. H., and P. F. J. van Burg. 1977. The residual effect of fertilizer nitrogen on grassland within one growing season. Int. Grassland Congress Proc. 2:p. 971-978. |
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MSU catalog number: SB 16 .A33 |
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