The effects of the application as fertilizer during ten years of two sewage sludges (aerobically and anaerobically digested, at rates of 400, 800, and 1200 kg of N/ha yr), on the aggregate stability and contents of related organic matter components, microbial biomass and levels of five enzymatic activities (alkaline phosphomonoesterase, phosphodiesterase, urease, arylsulphatase and dehydrogenase) were investigated. The application of both sludges at mid and high rates gave rise to significant increases of organic matter, humified substances and humic acids, but no effects on carbohydrates, microbial gums and aggregate stability were observed. As for biological activity in soils, the high Variability of data led to a general absence of stati...
Changes in soil microbial activities were investigated to examine the effect of aerobically digested...
The benefits and limitation of sewage sludge application as an organic fertilizer need to be investi...
One of the solutions implemented in order to improve the quality of soils exposed to pesticides is t...
The effects of usual or recommended rates of application of five organic amendments (24 t/ha yr of M...
A soil sample was taken from the top 0-20cm at Jaboticabal county, São Paulo State, Brazil, air drie...
Changes in some soil biochemical properties were investigated following repeated applications of aer...
There is a need to improve the way in which wastes, such as sewage sludges, are managed and a potent...
The effects of municipal sewage sludge on biological properties (the microbial biomass, soil respira...
The biological effects of applying sewage sludge (SS) to agricultural soil (at a low rate of 22.5, L...
This study investigated the soil biochemical activity after different amounts of organic materials w...
This study measured the effects of four years of municipal, anaerobically digested sewage sludge app...
The application of sewage sludge is a concern because it may affect the quality of organic matter an...
The aim of this work has been to determine the effect of sterilized and non-sterilized, aerobically ...
Composted sewage sludge (CS) is considered a rich source of soil nutrients and significantly affects...
Successive applications of compost obtained from tannery sludge affected the soil microbial biomass ...
Changes in soil microbial activities were investigated to examine the effect of aerobically digested...
The benefits and limitation of sewage sludge application as an organic fertilizer need to be investi...
One of the solutions implemented in order to improve the quality of soils exposed to pesticides is t...
The effects of usual or recommended rates of application of five organic amendments (24 t/ha yr of M...
A soil sample was taken from the top 0-20cm at Jaboticabal county, São Paulo State, Brazil, air drie...
Changes in some soil biochemical properties were investigated following repeated applications of aer...
There is a need to improve the way in which wastes, such as sewage sludges, are managed and a potent...
The effects of municipal sewage sludge on biological properties (the microbial biomass, soil respira...
The biological effects of applying sewage sludge (SS) to agricultural soil (at a low rate of 22.5, L...
This study investigated the soil biochemical activity after different amounts of organic materials w...
This study measured the effects of four years of municipal, anaerobically digested sewage sludge app...
The application of sewage sludge is a concern because it may affect the quality of organic matter an...
The aim of this work has been to determine the effect of sterilized and non-sterilized, aerobically ...
Composted sewage sludge (CS) is considered a rich source of soil nutrients and significantly affects...
Successive applications of compost obtained from tannery sludge affected the soil microbial biomass ...
Changes in soil microbial activities were investigated to examine the effect of aerobically digested...
The benefits and limitation of sewage sludge application as an organic fertilizer need to be investi...
One of the solutions implemented in order to improve the quality of soils exposed to pesticides is t...