Aphids are among the major global pest groups, causing serious economic damage to many food and commodity crops in most parts of the world. This revision and update of the well-received first edition published ten years ago reflects the expansion of research in genomics, endosymbionts and semiochemicals, as well as the shift from control of aphids with insecticides to a more integrated approach imposed by increasing resistance in the aphids and government restrictions on pesticides. The bo...

Tillage agriculture has led to widespread soil and ecosystem degradation. This book reviews research and development initiatives in Africa aimed at building resilient farming systems. It summarises the status of conservation agriculture today, discusses prospects for future development and provides case studies showing its performance in Africa.