scholarly journals Effects of applications of sewage sludge and fertilizer nitrogen on cadmium and lead contents of grass.

1983 ◽  
Vol 31 (3) ◽  
pp. 227-232
Author(s):  
O.J. Hemkes ◽  
A. Kemp ◽  
L.W. van Broekhoven
Keyword(s):  
Sewage Sludge ◽  
Fertilizer N ◽  
Fertilizer Nitrogen ◽  
Late Autumn ◽  
Permanent Grassland ◽  
Cadmium And Lead ◽  
Autumn And Winter ◽  
Sludge Application

During 5 successive years, 0, 6, 12 or 18 t/ha yr metal-bearing sewage sludge on a DM basis was applied to permanent grassland. Each sludge application was combined with various N treatments. Cd content of the grass increased considerably with increasing amounts of sewage sludge and fertilizer N; Cd content was higher in young than in old grass. The latter also applied to Pb but the increase in Pb content was less and the relation between the supply of Pb and the Pb content of the grass was poor. During the late autumn and winter the increase in Pb content was striking and was probably caused by pollution from the atmosphere. (Abstract retrieved from CAB Abstracts by CABI’s permission)

The effects of sewage sludge on growth and foliar and soil chemistry in pole-stage Corsican pine at Ringwood Forest, Dorset, UK

1991 ◽  
Vol 21 (6) ◽  
pp. 902-909 ◽  
Author(s):  
A. J. Moffat ◽  
R. W. Matthews ◽  
J. E. Hall
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Environmental Effects ◽  
Soil Chemistry ◽  
Litter Layer ◽  
Cadmium And Lead ◽  
Nitrogen Phosphorus ◽  
Sludge Application

An experiment to examine the use of sewage sludge as a fertiliser for pole-stage Corsican pine (Pinusnigra var. maritima (Ait.) Melville) is described. Dominant and codominant trees responded markedly to additions of sludge at rates of 200 and 400 m3•ha−1, increasing sawlog volume by over 50% in treated plots. Foliar analyses suggest that the trees have responded to phosphorus in the sludge. The greatest impact of sludge on the soil occurred in the litter layer; concentrations of nitrogen, phosphorus, calcium, zinc, copper, cadmium, and lead were all greater compared with concentrations of untreated controls. Nevertheless, at rates of sludge application appropriate to fertilising (200 m3•ha−1), additions of heavy metals are considered small and are unlikely to cause adverse environmental effects.

scholarly journals Accumulation of heavy metals in the soil due to annual dressings with sewage sludge.

1980 ◽  
Vol 28 (4) ◽  
pp. 228-237
Author(s):  
O.J. Hemkes ◽  
A. Kemp ◽  
L.W. van Broekhoven
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Field Experiment ◽  
Dry Matter ◽  
Permanent Grassland ◽  
Sludge Application ◽  
Matter Basis ◽  
Term Field

In a long term field experiment 0, 6, 12 or 18 tonnes/ha/yr of sewage sludge (dry matter basis) were applied to permanent grassland. Sludge application markedly increased the contents of Cd, Pb, Zn, Cu, Ni, Cr, Mo, to a depth of 15-25 cm, but Co, Mn and Fe contents were increased only in the surface 5 cm of soil. (Abstract retrieved from CAB Abstracts by CABI’s permission)

scholarly journals Aetiology and epidemiology of viral croup in Glasgow, 1966–72

1974 ◽  
Vol 73 (1) ◽  
pp. 143-150 ◽  
Author(s):  
K. A. Buchan ◽  
Karen W. Marten ◽  
D. H. Kennedy
Keyword(s):  
Retrospective Study ◽  
Influenza A ◽  
Seasonal Distribution ◽  
Late Autumn ◽  
Small Peak ◽  
Causative Agents ◽  
Autumn And Winter ◽  
Viral Croup

SUMMARYA retrospective study of 258 children admitted to Ruchill Hospital, Glasgow, with croup between 1966 and 1972 indicated that the viruses most frequently associated with the syndrome were parainfluenza types 1 and 3 and influenza A. Most cases were admitted in the late autumn and winter months, with a small peak in May and June. This seasonal distribution mirrored the circulation of the main causative agents in the community, parainfluenza 1 being principally associated with the autumn cases, influenza A the winter cases and parainfluenza 3 the summer cases. Two of these ‘croup associated’ viruses showed regular periodicity, parainfluenza 1 occurring biennially in even years and influenza A in most years. The periodicity of parainfluenza 3 is as yet undetermined.

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