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Titolo:
AUTOTROPHIC NITRIFICATION IN ACID TEA SOILS
Autore:
HAYATSU M; KOSUGE N;
Indirizzi:
NATL RES INST VEGETABLES ORNAMENTAL PLANTS & TEA,DEPT TEA AGRON KANAYA SHIZUOKA 428 JAPAN
Titolo Testata:
Soil Science and Plant Nutrition
fascicolo: 2, volume: 39, anno: 1993,
pagine: 209 - 217
SICI:
0038-0768(1993)39:2<209:ANIATS>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
FOREST SOIL; HETEROTROPHIC NITRIFICATION; NITROGEN MINERALIZATION; NITRIFYING BACTERIA; HEATH SOIL; ACETYLENE; PH;
Keywords:
ACID TOLERANT; NITRIFICATION; TEA SOIL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
32
Recensione:
Indirizzi per estratti:
Citazione:
M. Hayatsu e N. Kosuge, "AUTOTROPHIC NITRIFICATION IN ACID TEA SOILS", Soil Science and Plant Nutrition, 39(2), 1993, pp. 209-217

Abstract

Investigations to analyze the nature of nitrification in acid soils were carried out in the laboratory using 2 soil types from a tea field. The optimum temperature for the nitrification activity in these soilswas 25-degrees-C and the activity was inhibited above 35-degrees-C, suggesting that the nitrifying bacteria became adapted to the soil conditions. The optimum NH4+-N concentrations for nitrification ranged between 20 and 200 mg N/100 g of soil and the activity decreased at a concentration above 300 mg N. The effect of acidity on nitrification was studied by using soil samples amended with various amounts of CaCO3. Although the pattern of NO2- production changed, the rate of ammonia oxidation was not influenced by the addition of CaCO3. The nitrificationactivity was completely inhibited by the addition of nitrapyrin or acetylene. These results suggest that acid-tolerant or acidophilic autotrophic nitrification occurs in acid tea soils in Japan.

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Documento generato il 05/12/20 alle ore 13:48:45