Many measures have been proposed to mitigate gaseous emissions and other nutrient losses from agroecosystems, which can have large detrimental effects for the quality of soils, water and air, and contribute to eutrophication and global warming. Due to complexities in farm management, biological interactions and emission measurements, most experiments focus on analysis of short-term effects of i...

that are in excess of the crop P removal. Excess P can accumulate in the soil and can increase P in runoff. Pote To utilize manure P for crop production, P release and plant availet al. (1996, 1999) found increased P loss in runoff as ability needs to be quantified. An incubation study was conducted to determine P availability from swine (Sus scrofa) and cattle (Bos tauthe soil P test increased...

We investigated the structure of bacterial communities present in livestock manure-based composting processes and evaluated the bacterial succession during the composting processes. Compost samples were derived separately from swine manure, dairy manure and sewage sludge. The structure of the bacterial community was analyzed by polymerase chain reaction-denaturing gradient gel electrophoresis (...

The moisture and manure contents of soils at cattle feedlot surfaces vary spatiotemporally and likely are important factors in the persistence of Escherichia coli O157 in these soils. The impacts of water content (0.11-1.50 g H2O g(-1) dry feedlot surface material [FSM]) and manure level (5, 25, and 75% dry manure in dry FSM) on E. coli O157:H7 in feedlot soils were evaluated. Generally, E. col...

A compilation of N balance data (n = 1801) was partitioned into four groups to define the mean excretion of manure and N and to develop empirical equations to estimate these excretions from Holstein herds. Mean excretion of manure for cows that averaged 29 kg/d of milk production was 3 kg/d per 1000 kg of body weight (BW) more than the value for dairy cows reported by the American Society of Ag...

Background & Aim: Rosemary (Rosmarinus officinalis L.) is an evergreen and aromatic plant that is used in pharmaceutical and cosmetic industries-health. Little research has been reported on the greenhouse production of this plant. This paper presents the effects of municipal solid waste compost (MSWC) and cattle manure on rosemary growth in pots at greenhouse. Martial & Methods: Munic...

Pasture runoff can contribute to elevated concentrations of nutrients, solids, and bacteria in downstream waters. The objective of this study was to determine the effects of vegetative filter strip (VFS) length on concentrations and transport of nitrogen, phosphorus, solids and fecal coliform in runoff from plots treated with cattle manure. Three plots with dimensions of 2.4 × 30.5 m were used....

BACKGROUND Residues of veterinary medicinal products (VMPs) enter the environment via application of manure onto agricultural areas where in particular antibiotics can cause phytotoxicity. Terrestrial plant tests according to OECD guideline 208 are part of the environmental risk assessment of VMPs. However, this standard approach might not be appropriate for VMPs which form non-extractable resi...

This study aimed to evaluate the nutrient losses by leaching as a function of the type of incorporated organic residues into the soil, as well as the accumulation in the melon crop. The experiment was developed in a greenhouse of the UFC/CCA. The soil was a Ultisol, collected in the layer of 0-10 cm. A completely randomized design considering four replications was adopted. The treatments tested...

The persistence of naturally occurring campylobacteria in aerobic compost constructed of manure from beef cattle that were administered chlortetracycline and sulfamethazine (AS700) or from cattle not administered antibiotics (control) was examined. Although there were no differences in population sizes of heterotrophic bacteria, the temperature of AS700 compost was more variable and did not bec...