With growing awareness of the dangers of an irreversible loss of plant genetic resources for food and agriculture (PGRFA), there has been a major effort devoted to collecting and conserving plant genetic resources. The objective of this study is to assess the level of investments in PGRFA...

Despite favourable ecological and economic results, many developing countries have not yet adopted an integrated pesticide management (IPM). Given rising marginal costs and diminishing marginal benefits from IPM technology transfer, an optimal control framework is used to identify optimal rates...