Tsetse-fly and the disease it transmits, trypanosomosis, remain an enormous disease challenge in the 37 countries of sub-Saharan Africa where the impact continues to be manifest in disease burden, increased level of poverty and decreased agricultural productivity. The impact also extends over an estimated 10 million km2 (a third of the African continent) of land area, a third of which contains ...

Ammonia emissions are associated with many agricultural operations including animal and poultry operations, waste and wastewater treatment operations, and fertilizer and manure land applications. The fate of ammonia released to atmosphere is affected by interaction with other gases, aerosols, and fine particles. These interactions affect the gas-to-particle conversion. This process alters ammon...

The huge changes in agricultural activities, which may be amplified by the forthcoming Common Agriculture Policy reform, call the future of crop-livestock systems into question and hence the impact of these changes on landscapes and biodiversity. We analyzed relationships between agriculture, landscape and biodiversity in south-western France. The study area covered about 4,000 ha and included ...

Wolves (Canis lupus) have expanded their distribution into areas of the midwest United States that have not had wolves for several decades. With recolonization of wolves into agricultural areas, there is increasing concern of wolf–livestock conflicts. To assess the risk wolves may pose to livestock, we initiated a 3-year study investigating the activity patterns, movements, habitat use, visitat...

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considering the importance of the impact of subsidy reform on the agricultural sector, the study aimed at understanding consequences of changes in the rates of production subsidy using general equilibrium model based on input-output table in the year 2001.the study conducted based on three scenarios containing step, down and finally removed rates of production subsidy. the effects on production...

this article analyses spatial political, economic and social contexts of successful of farming and livestock development in the area of Ili river valley (AoIRV). AoIRV is located on Xinjiang Uygur Autonomous Region (XUAR), where is a vital and historical agricultural area in this region. In the Context of ‘Western Development Drive’ of China, central government enhance the support for western r...

A dramatic increase in agricultural production can be observed during the past decades in Brazil, mostly due to increases in yield. Furthermore the sugarcane production increased based on area expansion, mainly over pasture areas. In the same period Brazil became a leading global beef producer. Brazilian official agricultural statistics time series data on agricultural production from 1980 unti...

This paper outlines sectoral economic changes that have occurred in China and Vietnam following their market reforms and rapid economic growth. Bothe economies have experienced increased urbanization and a decline in the relative contribution of agriculture to GDP and to employment. There has been considerable movement of labor from agricultural to nonagricultural employment. Such movements are...