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Titolo:
Effects of humus content, farmyard manuring, and mineral-N fertilization on yields and soil properties in a long-term trial
Autore:
Stumpe, H; Garz, J; Schliephake, W; Wittenmayer, L; Merbach, W;
Indirizzi:
Univ Halle Wittenberg, Landwirtschaftl Fak, Inst Bodenkunde & Pflanzenernahrung, D-06108 Halle, Saale, Germany Univ Halle Wittenberg Halle Saale Germany D-06108 8 Halle, Saale, Germany
Titolo Testata:
JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE-ZEITSCHRIFT FUR PFLANZENERNAHRUNG UND BODENKUNDE
fascicolo: 6, volume: 163, anno: 2000,
pagine: 657 - 662
SICI:
1436-8730(200012)163:6<657:EOHCFM>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Keywords:
farmyard manure; soil organic matter; long-term trial; N fertilization; yield;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
10
Recensione:
Indirizzi per estratti:
Indirizzo: Merbach, W Univ Halle Wittenberg, Landwirtschaftl Fak, Inst Bodenkunde & Pflanzenernahrung, Adam Kuckhoff Str 17B, D-06108 Halle, Saale, Germany UnivHalle Wittenberg Adam Kuckhoff Str 17B Halle Saale Germany D-06108
Citazione:
H. Stumpe et al., "Effects of humus content, farmyard manuring, and mineral-N fertilization on yields and soil properties in a long-term trial", J PLANT NU, 163(6), 2000, pp. 657-662

Abstract

Investigations carried out at Field F3 of the Halle long-term fertilization trials using data from 1974 to 1983 showed that with adequate supply of mineral N-fertilizer soil organic matter (SOM) had no significant effects ofyield. Similarly enhanced SOM did not justify a reduction of mineral N (Stumpe et al., 2000). The studies presented here examine the effects of the SOM differences existing after the termination of those trials in 1986 up until 1997 (then mainly differences of hardly decomposable SOM) in comparisonto farmyard manuring with enhanced mineral N application (3-factor-experiment). As with total SOM, hardly decomposable SOM did not directly affect yields. The effects of FYM treatment observed at lower mineral-N levels were compensated for by enhanced mineral-N supply; The direct effect of FYM (40 t ha(-1)) corresponded to a supply of about 60 kg ha(-1) and the residual effectto about 20 kg ha(-1). The differences of the C-content in the soil at thebeginning of the present studies continued throughout the experimental period of 12 years. In addition, significant differentiation has been caused by FYM and N fertilization in comparison to unfertilized treatments. The major finding is that differences in SOM content do not lead to yield differences on physically good soils (chemozem-like soils) if appropriate compensation by mineral-N fertilization takes place.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/09/20 alle ore 00:36:19