Living in Harmony with Nature and teaching others to garden the natural (organic) way, with emphasis on practices that lead to NUTRIENT DENSE produce!

Harmony Gardens

Harmony Gardens
Bey Home designed by Stitt Energy Systems, Inc. 2002

Welcome To Our Site

Our intent is simple: to provide useful information on gardening, health and sustainability issues. We will include class and meeting announcements, gardening information, and book reviews. The articles that Calvin writes for Garden Thyme, the Master Gardener Newsletter will be included. We will try to make this site easy to use and relevant.

About Me

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Fayetteville, Arkansas, United States
Harmony Gardens is the home of Calvin and Doris Bey. As the name implies our goal is to live in harmony with the Laws of Nature. We are concerned about the environment, energy efficiency, organic gardening, alternative health, and sustainability issues. We love our Stitt Energy Systems Inc. energy efficient home, which received a First Place NAHB National Award for 2003. Calvin is a retired USDA Forest Service scientist. Each year he teaches classes in Organic Gardening in February and March and again in September. Doris is a retired RN. Calvin and Doris have put their energy efficient house up for sale (by owner). See first post for description, pictures, and house design.

May 14, 2009

Free Nitrogen

Economic crisis or not, we generally like to get things "free." Sometimes there are strings attached and what appears to be free is not such a great deal. Among the thousands of natural phenomena, there are some amazing processes that give us "free" products. The process of photosynthesis is an example. It includes the use of free carbon dioxide, free sun energy, and free rain, all working in connection with a lot of natural minerals. The result is system that makes our food. It can work just fine without any input from us. I guess it is our nature, but we have a tendency to want to control the processes and take credit for things that come naturally.

We know that plants need nitrogen for growing. The nitrogen used by plants does not all come from the soil. The air is 75 percent nitrogen and plants utilize some of it on routine basis. It actually moves into the plant through the stomata, just as does the carbon dioxide. Beyond using the atmospheric nitrogen for growth, some plants are able to take that nitrogen and "fix" it in the soil. The biggest group of nitrogen fixing plants comes from the legume family, which includes peas, beans, peanuts, vetch, black locust trees, and many more.

The nitrogen fixation process is actually a little more complex in that it requires the help of Rhizobium bacteria, which are found naturally in the soil. Caution! Soils that that have had a lot of abuse through the use of high salt fertilizers and pesticides may not contain the necessary bacteria. Without the bacteria, no nitrogen will be fixed. Fortunately, you can purchase the bacteria to re-inoculate bacteria-deficient soils.

I use Austrian winter peas as one of my primary winter cover crops. I plant the peas in September and they grow about 12 inches tall in the fall and then begin to grow again in the spring. By early May they are 2 feet tall and beginning to flower. When they begin to bloom, I cut them off and either leave them right in place for garden mulch, or use them for compost, or sometimes feed them to my red wiggler worms. Corn is heavy user of nitrogen and does very well where the peas have grown.

I dig up some pea plants each fall and spring to see if they are producing nitrogen. The presence of nitrogen is easily detected by the whitish-pink nodules on the roots. The amount of nitrogen that is being "fixed" in my garden appears to be growing each year. The peas are profusely loaded with nodules this spring. I expect there is 100 - 200 pounds of nitrogen per acre on the roots. The picture below with the Austrian winter peas and the nodules show just how the nitrogen fixing system works.

In addition to the accumulation of nitrogen on the roots, the biomass of the vegetation is huge. I weighed a sample of the Austrian winter peas from my garden and estimate that I have 13 tons of organic matter (green weight) per acre. Our farming ancestors knew the value of nitrogen fixing cover crops, crop rotations, green manures, and other similar systems. The same is true of many current alternative and organic gardeners/farmers, the Amish, and others. These are the practices that lead to more sustainable farming.

The real plus in the cover crop-rotational system is that the nitrogen produced in this way is in an organic form and is released slowly, often just the way the plant needs it. It's another example of how important it is to understanding the workings of Nature. This "free" nitrogen story is about as good as it gets in Nature.


Laney said...

Love reading your posts. Where in the Fayetteville area can I buy Austrian winter pea seed?

egp said...

Nice work, your awsome content have forced me to to leave some positive feedback BioBizz TopMaxIs Best for Flowers & Vegetables

Garden 2007

Garden 2007
Heirloom "Country Gentleman" Corn