Combining genetic improvement with natural resource management

Abstract

Ultimate success in exploiting the genetic capabilities of plants to grow in nutrient-stressed environments of the semi-arid tropics (SAT) requires a holistic view of food systems to ensure that genetic selections for improved yields on nutrient-poor soils will actually be adopted by farmers. This session focused on using existing knowledge of soil fertility and plant nutrition to develop farming technologies that could increase crop productivity on the nutrient-depleted soils of small-farm holders in the SAT. Knowledge gaps were identified for future research opportunities in low-nutrient input farming systems. Additionally, the important role that simulation models can play in synthesizing existing knowledge, determining future research and development needs, and in providing information applicable to policy and economic decision-making was discussed. Brief overviews of the papers presented during this session follow.