Achieving better understanding phosphorus (P) flows through urban ecosystems is needed to conserve P, as non-renewable phosphate rock deposits become depleted and the global human population increases. A baseline mass flow analysis (MFA) for P developed for the Twin Cities Watershed (TCW, which includes most of the Minneapolis-St. Paul metropolitan region) showed that most P input was stored in...

We use a model of agricultural sources of ammonia (NH3) coupled to a chemical transport model to estimate the impact of U.S. food export on particulate matter concentrations (PM2.5). We find that food export accounts for 11% of total U.S. NH3 emissions (13% of agricultural emissions) and that it increases the population-weighted exposure of the U.S. population to PM2.5 by 0.36 μg m(-3) on avera...

Nigeria is a dominant economic force in sub-Saharan Africa with a strong economy as well as booming oil and agricultural sectors. However, over-dependence on the production and export of oil as well as food imports has rendered the economy vulnerable to global price fluctuations. The increasing spate of fluctuations in the world price of oil affects not only the economic sector but also agricul...

This study aims to examine the impact of the China–ASEAN Free Trade Area (CAFTA) on China’s international agricultural trade and its regional agricultural development, using the Global Trade Analysis Project model and the China Agricultural Decision Support System. Our analysis showed that: (i) CAFTA will improve resource allocation efficiencies for both China and ASEAN and will promote bilater...

The main purpose of the study is to analyze current state agricultural production, explore processing opportunities and identify areas for improving public policy increase export potential. A statistical, systematic approach, analysis generalization methods were used in research work. article provides an role increasing production exportoriented products, competitiveness quality, technological ...

Relations between riverine export (load) of total nitrogen (N) and total phosphorus (P) from 133 large agricultural watersheds in the United States and factors affecting nutrient transport were evaluated using empirical regression models. After controlling for anthropogenic inputs and other landscape factors affecting nutrient transport-such as runoff, precipitation, slope, number of reservoirs...

Plant diseases are a significant constraint to agricultural productivity. Exotic plant diseases pose a continued threat to profitable agriculture in the United States. The extent of this threat has increased dramatically in the 1980s and 1990s due to the expansion of international trade in agricultural products and frequent movement of massive volume of people and goods across national boundari...