Results 111 to 120 of about 288,874 (227)

The Economics of Manure Utilization: Model and Application [PDF]

A model of manure utilization is developed and applied to four types of transportable manure. Model results highlight important response differences among manure types and generally illustrate the diseconomies of manure production. For example, as manure
Hauck, Larry M., Keplinger, Keith O.
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Biochemical methane potential analysis using cow dung, chicken manure and pig manure under mesophilic conditions [PDF]

, 2019
: In this study, we compared methane production by anaerobic mono-digestion and co-digestion of cow dung, chicken manure and pig manure under mesophilic conditions at the temperature of 37 0 C using a ratio of 1:1.
Matheri, Anthony Njuguna, Belaid, Mohamed, Muzenda, Edison, Mdluli, Nomkhosi Princess   +3 more
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Variation in concentration of climate-active substances in emissions from different types of liquid manure processing systems

Аграрная наука Евро-Северо-Востока
The amount of climate-active substances emissions depends on the technology and the mode of manure processing. Current methodologies for calculating these emissions are based on aggregated coefficients that do not consider climatic zones or the manure ...
E. V. Vasilev, V. I. Bazykin, E. V. Shalavina, S. A. Egorov   +3 more
doaj   +1 more source

Deodorization of pig manure in the piggery [PDF]

Annales de Zootechnie, 1979
Lefèvre, B., Heduit, Michèle
openaire   +2 more sources

Nitrogen and phosphorus uptake from solid and liquid pig manure in perennial and annual cropping systems

, 2018
Applying pig manure in excess of crop demand can result in nutrient loss to water bodies. We studied the effect of liquid and solid pig manures and their N- and P-based application rates on yield and nutrient uptake in annual and perennial cropping ...
Wole Akinremi, Don Flaten, Rezvan Karimi
core   +1 more source

Chemical characteristics of wheat straw (WS), corn straw (CS), wheat root (WR), corn root (CR), pig manure (PM), and cattle manure (CM).

, 2018
Chemical characteristics of wheat straw (WS), corn straw (CS), wheat root (WR), corn root (CR), pig manure (PM), and cattle manure (CM).
Dongchu Li (5746490), Ling Li (38566), Minggang Xu (586843), Mohammad Eyakub Ali (5746484), Yinghua Duan (5746487), Wenju Zhang (566234)   +5 more
core   +1 more source

Environmental systems analysis of pig production [PDF]

, 2004
The aim of this thesis was to develop the SALSA models (Systems AnaLysis for Sustainable Agriculture), and to apply them to studies for the benefit of more sustainable pig production.
Strid Eriksson, Ingrid
core   +1 more source

Dynamics of antibiotic resistance genes during manure composting: Reduction in herbivores manure and accumulation in carnivores

Environment International
The elevated levels of antibiotic resistance genes (ARGs) in livestock manure represent a significant threat to both the environment and human health.
Guoying Wang, Xia Gao, Yu Cai, Guoxue Li, Ruonan Ma, Jing Yuan   +5 more
doaj   +1 more source

Innovations in composting pig manure

Composting manure on farm can emit large quantities of ammonia and smell. This thesis focuses on improving the compost process by analysis of the process control, the feed composition and the bed structure. A low cost solution to the ammonia emission was developed.
openaire   +1 more source

Lime Application Reduces Methane Emissions Induced by Pig Manure Substitution from a Double-Cropped Rice Field

Agriculture
The substitution of chemical fertilizers with organic manure plays a critical role in sustainable crop production. Nevertheless, organic amendments promote the global warming potential (GWP) in rice paddies due to increased methane (CH4) emissions ...
Jinsong Liu, Yuxuan He, Jin Chen, Shan Huang, Yanni Sun   +4 more
doaj   +1 more source