Nitrification in acid tea soils and a neutral grassland soil: Effects of nitrification inhibitors and inorganic salts

A - Papers appearing in refereed journals

Wickramasinghe, K. N., Rodgers, G. A. and Jenkinson, D. S. 1985. Nitrification in acid tea soils and a neutral grassland soil: Effects of nitrification inhibitors and inorganic salts. Soil Biology and Biochemistry. 17 (2), pp. 249-252.

AuthorsWickramasinghe, K. N., Rodgers, G. A. and Jenkinson, D. S.
Abstract

Nitrification was much slower in five strongly acid (pH 4.0–4.3) soils from tea plantations in Sri Lanka than in a near-neutral grassland soil from the U.K., suggesting that the nitrifiers in these tea soils are close to the lower limit of their pH range. Nitrapyrin effectively inhibited nitrification in all the soils: dicyandiamide was less effective. Low concentrations of KC1 slowed nitrification in the acid tea soils but not in the near-neutral grassland soil. The concentrations of KC1 used (up to 20 mM) were sufficient to cause measurable decreases in soil pH in both acid and neutral soils. It is proposed that this salt-induced decrease in pH is detrimental to nitrifying organisms operating at the limit of their pH range but not to nitrifiers nearer their pH optimum.

Year of Publication1985
JournalSoil Biology and Biochemistry
Journal citation17 (2), pp. 249-252
Digital Object Identifier (DOI)doi:10.1016/0038-0717(85)90123-3
Open accessPublished as non-open access
Output statusPublished
Publication dates
Online12 Nov 2002
Print1985
Publication process dates
Accepted25 Sep 1984
Copyright licensePublisher copyright
PublisherElsevier
ISSN0038-0717

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