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Mathematical modelling of ammonia volatilization from slurry stores and its effect on Cryptosporidium oocyst viability

Published online by Cambridge University Press:  27 March 2009

G. D. Ruxton
G. D. Ruxton
Affiliation:
Scottish Agricultural Statistics Service, King's Buildings (JCMB), Mayfield Road, Edinburgh EH9 3JZ, UK
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Summary

A simple mathematical model is shown to provide reasonably good predictions of time series data on ammonia loss from three experiments on slurry stores. The model produces predictions of changes in the distribution of ammonia with depth. Experimental evidence suggests that ammonia concentrations above a critical value appear to destroy the viability of Cryptosporidium oocysts. Using this criterion, the model predicts that, even under the most favourable circumstances, oocysts are unlikely to remain viable in slurry stores except in the top few centimetres. The effect of stirring the slurry is considered.

Information

Type
Crops and Soils
Information
The Journal of Agricultural Science , Volume 124 , Issue 1 , February 1995 , pp. 55 - 60
Copyright
Copyright © Cambridge University Press 1995

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