TY - JOUR
T1 - Influence of soil parameters on the effect of 3,4-dimethylpyrazole-phosphate as a nitrification inhibitor
AU - Barth, G.
AU - Von Tucher, S.
AU - Schmidhalter, U.
N1 - Funding Information:
Acknowledgements We thank Dr M. Munzert for his support on statistical subjects and A. Bengel for the determination of the catalase activity (both Bavarian State Institute of Soil Cultivation and Plant Production). Our thanks also go to Henriette Heinrich for expert technical assistance. This research was supported by the Bundesministerium für Bildung und Forschung (BMBF), Bonn, Germany (project no. 423-40003-0339812) and by BASF, Lud-wigshafen, Germany.
PY - 2001
Y1 - 2001
N2 - Nitrification inhibitors specifically retard the oxidation of NH4+ to NO2- during the nitrification process in soil. In this study, the influence of soil properties on the nitrification-inhibiting effect of 3,4-dimethylpyrazole-phosphate (DMPP), a newly developed nitrification inhibitor, has been investigated. Based on short-term incubation experiments, where the degradation of DMPP could be largely disregarded, the oxidation of the applied NH4+ was more inhibited in sandy soils compared with loamy soils. The influence of soil parameters on the relative NO2- formation could be described by a multiple regression model including the sand fraction, soil H+ concentration and soil catalase activity (R2=0.62). Adsorption studies showed that the binding behaviour of DMPP was influenced markedly by soil textural properties, viz. the clay fraction (r2=0.61). The adsorption of DMPP was found to be an important factor for the inhibitory effect on NH4+ oxidation in a short-term incubation (r2-0.57). It is concluded that the evaluated soil properties can be used to predict the short-term inhibitory effect of DMPP in different soils. The significance of these results for long-term experiments under laboratory and field conditions needs further investigation.
AB - Nitrification inhibitors specifically retard the oxidation of NH4+ to NO2- during the nitrification process in soil. In this study, the influence of soil properties on the nitrification-inhibiting effect of 3,4-dimethylpyrazole-phosphate (DMPP), a newly developed nitrification inhibitor, has been investigated. Based on short-term incubation experiments, where the degradation of DMPP could be largely disregarded, the oxidation of the applied NH4+ was more inhibited in sandy soils compared with loamy soils. The influence of soil parameters on the relative NO2- formation could be described by a multiple regression model including the sand fraction, soil H+ concentration and soil catalase activity (R2=0.62). Adsorption studies showed that the binding behaviour of DMPP was influenced markedly by soil textural properties, viz. the clay fraction (r2=0.61). The adsorption of DMPP was found to be an important factor for the inhibitory effect on NH4+ oxidation in a short-term incubation (r2-0.57). It is concluded that the evaluated soil properties can be used to predict the short-term inhibitory effect of DMPP in different soils. The significance of these results for long-term experiments under laboratory and field conditions needs further investigation.
KW - 3,4-Dimethylpyrazole-phosphate
KW - Adsorption
KW - Nitrification inhibitor
KW - Short-term incubation
KW - Soil texture
UR - https://www.scopus.com/pages/publications/0034886107
U2 - 10.1007/s003740100382
DO - 10.1007/s003740100382
M3 - Article
AN - SCOPUS:0034886107
SN - 0178-2762
VL - 34
SP - 98
EP - 102
JO - Biology and Fertility of Soils
JF - Biology and Fertility of Soils
IS - 2
ER -