THE EFFECT OF LIME ON NITROGEN MINERALIZATION AS MEASURED BY GRASS GROWTH

The effect of rates of lime and nitrogen on the growth of ryegrass (Lolium perenne) was measured in a pot experiment using two yellow-brown earth steepland soils (pH 5.1 and 5.3). Nitrogen or raising the soil pH above 5.8-6.0 markedly increased growth on both soils. Negative lime × N interactions on...

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Bibliographic Details
Published in:Plant and soil 1981-06, Vol.60 (2), p.177-186
Main Authors: EDMEADES, D. C., JUDD, M., SARATHCHANDRA, S. U.
Format: Article
Language:English
Subjects:
Acid soils
Bacteria
Calcareous soils
Grassland soils
Loam soils
Orchard soils
Organic soils
Soil biochemistry
Soil fungi
Soil plant interactions
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Summary:The effect of rates of lime and nitrogen on the growth of ryegrass (Lolium perenne) was measured in a pot experiment using two yellow-brown earth steepland soils (pH 5.1 and 5.3). Nitrogen or raising the soil pH above 5.8-6.0 markedly increased growth on both soils. Negative lime × N interactions on both soils together with other data indicated that an increase in the rate of mineralization of N was the major effect of lime. Numbers of bacteria and fungi as measured by plate counts were not increased by liming and hence the increased rate of mineralization of N was attributed to increased microbial activity.
ISSN:0032-079X
1573-5036
DOI:10.1007/BF02374102