Results 141 to 150 of about 56,624 (248)

Organic pig production – With particular reference to Danish production conditions [PDF]

open access: yes, 2005
While there is a markedly growth in organically farmed land and in the organic food sector as such in Europe and North America, the organic pig sector has not developed correspondingly in most countries.
Hermansen, John E., Kongsted, Anne Grete
core  

THE EFFECT OF CHEMICAL AND ORGANIC FERTILIZATION ON PHYTOPLANKTON AND FISH PRODUCTION IN CARP (CYPRINIDAE) POLYCULTURE SYSTEM [PDF]

open access: yesRevista Bio Ciencias, 2010
This study reports the effects of sheep and pig liquid manure, and chemical fertilizer on the phytoplankton, primary productivity and aquaculture production in the cultivation of carp in semi-rustic ponds.
Ponce-Palafox JT   +9 more
doaj  

Indicators of resource use and environmental impact for use in a decision aid for Danish livestock farmers [PDF]

open access: yes, 1999
Farmers lack well documented sets of farm level indicators to allow their own evaluation of environmental impact and to stimulate the development of more environment friendly farming practices.
Halberg, Niels
core  

Effects of high-temperature isochoric pre-treatment on the methane yields of cattle, pig and chicken manure

open access: yes, 2013
Cattle manure, dewatered pig manure and chicken manure were pre-treated in a high-temperature reactor under isochoric conditions for 15 min at temperatures between 100 and 225 ◦ C with 25 ◦ C intervals to study the effect on their methane yield ...
MOLLER, Henrik Bjarne   +3 more
core   +2 more sources

Migration and Transformation of Cd in Pig Manure-Insect Frass (Hermetia illucens)-Soil-Maize System. [PDF]

open access: yesInt J Environ Res Public Health, 2022
Wang X, Wu N, Ma Y, Wang Z, Cai R, Xu X.
europepmc   +1 more source

Compost quality optimization through Plackett-Burman’s design

open access: yesInternational Journal of Recycling of Organic Waste in Agriculture
Purpose: This research aimed at compost quality optimization through Plackett-Burman’s design application. This statistical method was used to identify and evaluate key factors that impact compost quality and determine its optimal levels.
Luis Felipe Ortiz-Dongo   +4 more
doaj   +1 more source

Energy input and output of a rural village in China - the cas of the "Beijing Man village" /District of Beijing [PDF]

open access: yes, 2006
The rapid development of the economy has created an increasing demand for energy in China. The limited resources of fossil energy are a risk for the development of China.
Cong, Lin   +5 more
core  

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