Preserve Agricultural Diversity

The rampant loss of species occurring today is a major environmental concern. It is estimated that 75% of the genetic diversity of agricultural crops has been lost in the last century. Leaning heavily on one or two varieties of a given food is a formula for devastation. For instance, consider that only a handful of varieties of potatoes dominate the current marketplace, whereas thousands of varieties were once available.
Now, dig back to recent history's potato famine in Ireland, where a blight knocked out the whole crop,
which consisted of just a few varieties, and millions of people died of starvation.

Today, most industrial farms also grow just one crop rather than an array of crops on one piece of land. Ignorance is bliss? Or amnesia is disastrous? Crop rotation is a simple and effective technique used in organic agriculture to reduce the need for pesticides and improve soil fertility.
Most conventional food is also extremely hybridized to produce large, attractive specimens, rather than a variety of indigenous strains that are tolerant to regional conditions such as droughts and pests. Many organic farms grow an assorted range of food, taking natural elements and time-tested tradition into account. Diversity is critical to survival.