Manure application increases pasture crop production and minimizes manure storage costs. Excess N not absorbed by pasture vegetation can leach past the root zone and into ground water. A yearlong study was conducted on grazing pastures at 2 dairy farms to monitor potential nitrate (NO3) movement from the surface through the soil profile toward ground water. Precipitation, irrigation, manure app...

The over-application of phosphorus, as manure by animal feeding operations, is a threat to surface water quality. Concentration of animal feeding operations and over application of manures to cropland has lead to a build-up of phosphorus on many farms (Greaves et al., 1999). Relative to crop needs, manure slurries contain higher levels of phosphorus than nitrogen. When manure is applied to meet...

Dissemination and knowledge transfer remain a challenge in many fi elds of research. This is especially the case for the application of livestock waste management in developing countries where there an overwhelming volume of material is already available to the farm advisor and the real need is often the transfer of such knowledge to the local level. The object of this project is to package up ...

Excessive consumption of nitrogen (N) to enhance production, which may lead to environmental pollution. While sustainable production is threatened due to low soil fertility and organic matter. This study was carried out as a factorial experiment in the randomized complete block design and three replications at the research field of the University of Jiroft in 2018-2019. The present study invest...

As livestock and poultry farming expands in China, the generation of fecal waste has significantly increased. Inadequate management can contribute to environmental pollution. This study seeks optimize small-scale composting systems address inefficiencies limited automation traditional equipment. We redesigned mixing blades refined ventilation heating system, establishing an efficient mechanism ...

Highlights Steam gasification parameters of cattle manure char were optimized. Effects slow heating and fast modes on analyzed. 1.92 m 3 /kg syngas yield 88.72% C-conversion efficiency obtained at 850 ° C, with heating, 1.66 g/min steam flow rate, K 2 CO catalyst. Abstract . This study investigated the hydrogen-rich gas production from by gasification. The characteristics studied proximate anal...

Integrating thermochemical conversion (TCC) technologies with current animal waste treatment practices can treat and reduce quantities of manure from consolidated animal feeding operations. Additionally, TCC technologies can produce value-added, renewable energy products. These products can meet heating and power needs or be catalytically converted into liquid fuels. The primary objectives of t...