Economic and environmental impacts of production intensification in agriculture: comparing transgenic, conventional, and agroecological maize crops
Adinor José Capellesso, Ademir Antonio Cazella, Abdon Luiz Schmitt Filho, Joshua Farley & Diego Albino Martins
Rising agricultural prices, combined with growing import dependence, have driven Mexico’s food import bill over $20 billion per year and increased its agricultural trade deficit. Mexico imports one-third of its maize, overwhelmingly from the United States, but three million producers grow most of the country’s white maize, which is used primarily for tortillas and many other pluricultural products for human consumption. Yield gaps are large among the country’s small to medium-scale maize farmers, with productivity estimated at just 57% of potential. To what extent could Mexico close this yield gap, using proven technologies currently employed in the country, to regain its lost self-sufficiency in maize? A comprehensive review of the literature highlights the potential for achieving that goal. With a new government coming to power in Mexico, policy options are examined, identifying those most likely to increase both maize productivity and sustainable resource use while reducing import dependence. With climate change likely to constrain input-intensive agricultural productivity growth, these involve an emphasis on farmer-led extension services, the promotion of sustainable agricultural practices, and improved water management, including expanded irrigation.
Laboratory Rodent Diets Contain Toxic Levels of Environmental Contaminants: Implications for Regulatory Tests
Robin Mesnage , Nicolas Defarge , Louis-Marie Rocque, Joël Spiroux de Vendômois, Gilles-Eric Séralin
Mexico has recently taken significant steps towards promoting the bioenergy sector. Adoption of bioenergy is perceived as an opportunity to develop alternatives to fossil fuels, to foster economic development and to meet international commitments to reduce greenhouse gases. However, such opportunities are accompanied by concerns such as the effect of biofuel production on deforestation rates – concerns that may be addressed through policy instruments and proper program design. Therefore, this country report contains an analysis of the legal and institutional frameworks related to Mexico’s bioenergy sector.
El calentamiento global o "cambio climático" es el mayor reto ambiental que enfrentaremos en este siglo. Sus impactos ya se están verificando y, de no tomar medidas preventivas de inmediato, serán mucho más severos.