EFFECT OF THE NITRIFICATION INHIBITORS DICYANDIAMIDE, NITRAPYRIN AND THIOUREA ON NITROSOMONAS-EUROPAEA

被引：79

作者：

ZACHERL, B

AMBERGER, A

机构：

[1] Institute of Plant Nutrition, Technical University of Munich, Weihenstephan

来源：

FERTILIZER RESEARCH | 1990年 / 22卷 / 01期

关键词：

dicyandiamide; nitrapyrin; nitrification inhibitors; Nitrosomonas europaea; thiourea;

D O I：

10.1007/BF01054805

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

Effects of the inhibitors dicyandiamide (DCD), nitrapyrin (N-Serve, NS), and thiourea (TU) on growth and metabolism of Nitrosomonas europaea were tested under laboratory conditions. Growth of a pure culture was completely suppressed by 10 ppm NS and 0.5 ppm TU; inhibition by 300 ppm DCD was 83%. Ammonia oxidation and respiration of Nitrosomonas cell suspensions were reduced by 93% (10 ppm NS), 95% (0.5 ppm TU), and 73% (300 ppm DCD). Hydroxylamine oxidoreductase was not affected by high concentrations of inhibitors (200 ppm DCD, 100 ppm NS, 100 ppm TU). Cytochrome oxidase activity was increased by 10% with 200 ppm DCD, not affected by 100 pm TU, and inhibited by 52% with 100 ppm NS. The modes of action thus differed among the tested inhibitors. The merely bacteriostatic effect of dicyandiamide was demonstrated by the reversibility of growth inhibition. © 1990 Kluwer Academic Publishers.

引用

页码：37 / 44

页数：8

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