From Annuals to Perennials
Conservation, Food Plants - Annual, Food Plants - Perennial, Plant Systems, Rehabilitation, Seeds, Structure — by Craig Mackintosh December 19, 2009
Permaculture is all about mimicking natural systems – patterning our agriculture and other critical human needs on the symbiotic processes we observe all around us. If you compare nature’s methods we see that stable natural plant systems are polycultures, and perennial, whereas our modern industrial agriculture is the exact opposite – largely being monocultures and annuals.
But, imagine if the annual crops we rely on the most, grains and pulses, could be made to grow perennially instead. No end/beginning of year ploughing, no annual replanting, etc. It would save enormous amounts of time and energy on cultivation and planting, and allow soils to remain undisturbed for longer, with immense benefits to soil life, structure, organic matter and carbon content.
The video below highlights this out-of-the-box permaculture thinking. The Land Institute in Kansas has been working solidly on engineering annuals into perennials (by way of natural plant breeding – not by gene gun). They take ancient wild, perennial varieties of grains, and cross them with their modern annual counterparts, and repeat, and repeat, until they end up with a harvestable product from a plant that doesn’t have to be resown every year. Or at least that’s the aim. This is still a work in progress, but their purpose is "to develop an agricultural system with the ecological stability of the prairie and a grain yield comparable to that from annual crops".
The implications/benefits of this are hard to exaggerate – both in terms of energy/time expenditure for farmers, but also in terms of the health/structure of soil that doesn’t have to be cultivated nearly so often and the potential biodiversity (stability) that could be achieved with mixes of these polycultures.
With populations growing, the gap between nature’s way, and ‘our’ way, needs closing. We must find ways to eat that don’t undermine the very resources of soil, water and air that that eating depends on. This is the kind of ‘genetic engineering’ that I can endorse, and is the kind of research for the public good that should be aided by all governments that give a hoot about the future.
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