Nitrogen forms, pH and total carbon in a soil incubated with treated sewage effluent

Abstract

In this study, an experiment under controlled conditions was carried out to determine the effects of secondary

Microbial Metabolic Potential Affected by Surplus Wastewater Irrigation in Tropical Soil Cultivated with Tifton 85 Bermuda Grass (Cynodon dactylon Pers. X C. niemfuensis Vanderyst)

“…Soil pH increase observed after 18 months of TSE irrigation is in agreement with Fonseca et al (2007a). This result may be a consequence of the high pH value of TSE [pH (H 2 O) 7.5], stimulation effect of TSE irrigation on microbial activity, suitable moisture conditions, substrate addition, as well as organic matter mineralization.…”

Water type and irrigation time effects on microbial metabolism of a soil cultivated with Bermuda-grass Tifton 85

“…The use of effluent for crop irrigation is an old practice in many countries around the world (Hamilton et al, 2007). However in Brazil, this practice is recent (Fonseca et al, 2007a, 2007b, de Paula et al, 2009). Long-term effluent irrigation has resulted in modifications on several soil attributes (Filip et al, 1999;Bond, 1998; related with high inputs of dissolved minerals and suspended solids.…”