Journal of Food, Agriculture and Environment
Vol 9,
Issue 1,2011
Online ISSN: 1459-0263
Print ISSN: 1459-0255
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Sensitivity responses of soil nitrate accumulation, pH and EC to soil moisture and N application rate in glasshouse soils compared with field soils
Author(s):
Qiaoxia Yuan 1,
Duanwei Zhu 2*Recieved Date: 2010-10-28, Accepted Date: 2011-01-07
Abstract:Soil incubation was conducted to evaluate the sensitivity responses of nitrate accumulation, pH and electrical conductivity (EC) to soil moisture and N application rate in an open field soil (clay loam) compared with the same soil that had been in an adjacent glasshouse for 5 years. The results indicated that the additional nitrate accumulation arising from the treatments imposed, pH depression and increased EC were greater in the glasshouse soil than in the open-field soil under the same soil moisture and N application rates. The nitrate accumulation rate and pH depression rate increased with increasing soil moisture, and most enhanced at 90% water holding capacity in the glasshouse soil. By contrast, the nitrate accumulation and pH depression rate were the greatest at 70% water holding capacity in the open field soil. These findings provide information on how serious soil salinisation was made worse with different management inputs in particular nitrate application and irrigation regime.
Keywords:Glasshouse,
nitrate accumulation, pH, electrical conductivity, N application rate, soil moistureJournal: Journal of Food, Agriculture and Environment
Year: 2011
Volume: 9
Issue: 1
Category: Environment
Pages: 534-539
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