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1.atin America 1.ondon acid agricultural production annual Asia average biodiversity biological biopesticide biotechnology capita carbon cereal production chemical China climate change Colloquium conservation consumption Daniel Janzen decades decline demand demographic gift denitrification developing countries disease diversity ecological economic ecosystems effects environment environmental services estimates export farmers food production food security future genes genetic resources Green Revolution growth rate harvest hectares host plant resistance human hybrid impacts important improved increase INMAN inputs insect International irrigated land levels maize major Mexico million tons molecular natural enemies nitrogen cycle nutrient output pathogens per-capita cereal pest control pesticides phytoextraction plant resistance population growth precision agriculture projections protein recent reduced regions rhizosecretion rice root rougbly scenario species sub-Sabaran Africa sustainable teosinte tion transgenic plants trends tropical varieties wheat wildland garden world cereal world food world population yield potential