Introduction

Wheat is the number 2 staple crop in the developing world. Its geographic distribution is truly global. From the humid lowlands of northern Mexico to the dry plains of Kazakhstan, wheat is sown on more than 200 million ha of developing country farmland.

While many wheat farmers grow their crops on relatively large farms, large numbers, especially in the eastern Indo-Gangetic Plains of India, Bangladesh and Nepal are resource poor, with little land. The demand for quality wheat products like bread and chapatti in developing countries is increasing with the rising population and urbanisation but the farming systems impose major constraints on the environment and the future capacity to produce.