Diversify Crops To Prevent Global Climate Change Agricultural Damage

From "Diversifying crops may protect yields against a more variable climate" on ScienceBlog:

Adaptation to ongoing climate change is considered a policy priority for agriculture. The survey, by Brenda B. Lin of the Australian Commonwealth Scientific and Industrial Research Organization, documents multiple instances of farmers protecting economically important crops, such as rice and other cereals, alfalfa, and coffee, from outbreaks of pests and disease, often associated with climate change, or simply from changed physical conditions. The farmers succeeded by switching from growing a single variety of crop to growing a broader range of species or varieties, either at the same time or in rotation, or by introducing structural variety into uniform fields.