Thursday, April 6, 2017

Mined Over Matter

There are numerous studies about the reduction of food value in our modern fruits and vegetables.  It seems that the carrot you eat today is not as packed full of our bodys' essentials as it was years ago.

Modern ag practices have shouldered much of the blame.  The trend has been bigger and bigger and quanity over quality.  Yield is the primary concern and minute compromises of quality are ignored.  If the customer can not see the difference then it is not a significant difference?

Ever increasing yields by means of genetic manipulation, high rates of synthetic fertilizers, and high rates of herbicides and pesticides are all commonplace.  But the often overlooked result of those practices can be the root cause of substance depletion in our food supply - the resulting depletion of soil organic matter (SOM).

SOM has been mined out of our soils for decades.  That practice has necessitated replacing those nutrients with high levels of fertilizer to maintain economical yields.  The trend for big ag and everything getting larger and more expensive creates the demand for evolving crops with higher yields.

Yield is king!  To make margins profitable in the modern ag economy, you must continually improve yield.  There is zero tolerance for imperfections that would compromise yields.  High rates of herbicides and pesticides to the rescue!

All of those practices destroy the biology at work in the soil.  Improving the soil has not been a concern of big ag.  Could that be the reason for the decline in nutrition of our food supply?

I have been taking steps and making decisions to improve the soil on my farm for five years now.  I started out with an average SOM of less than one percent.  This is typical for my area of farm ground that is continuously tilled.  Ironically, our farms was certified organic for six years and that contributed to the destruction of organic matter.  Organic farmers have few options for controlling pesky weeds, so they often resort to additional tillage.

Pulling iron through your top soil kills the micro organisms at work trying to reproduce and increase your SOM.  It's analogous to raking scars on your skin.  The health of your skin and body would seriously be compromised from that continual practice.

For five years I have been instituting conservation ideas and the SOM appears to be responding to those efforts.  This laboratory data that I am basing this assumption on was the source of some controversy last year.

My field man has a lot of years of experience in this valley.  He has not witnessed such improvements in SOM and immediately concluded that the laboratory erred.  I suspect that I am his first "no-till" client.  I base this assumption on looking at farmers' fields whenever I have to drive somewhere (without running off the road!).  This areas farmers are prominently traditionalist, so it wasn't a surprise when he told me that he has not seen much change from one percent in SOM.  "The ground here is not capable of that much improvement."

He went on to educate me of the massive amounts of dump truck loads of importing material that it would mathematically require just to raise a single acre by a single percentage point.  I didn't offer any argument to the contrary because you cannot be too sure about these things initially.  Time will ultimately tell the truth, but a related university study came to mind that illustrates the great mass that life can accumulate out of "nothing-ness".

This particular agricultural university study was to identify the source of the mass required to grow a massive tree.  Measures were regularly recorded of the contained soil, the water added, and the mass of any added fertilizer.  They concluded that the mass supplied to grow the massive tree came out of the air!  The masses recorded from the soil, water, and fertilizer were negligible.

This leads me to believe that the magic in nature can create tons or living matter from the air that we breathe.  Providing of course that we do our part to keep conditions favorable for life.  So that has been my fundamental guiding principle: provide favorable conditions to support life in the soil.

Food, shelter, and clothing?  Life in the soil is not all that different.  It needs food, water, and sunlight.  What it doesn't need is harmful disturbances: tilling, poisons, or pH imbalances.  It's taken a lot of patience and tolerance for less than perfection to improve conditions for the soil life.  The explosion of earth worm populations are a good indicator.

My most recent laboratory tests, along with other observations, lead me to believe that I am on the right track.  My SOM has improved from less than one percent to average about three percent.  Another macro-indicator, the Cation Exchange Capacity (CEC) has also improved from single digits to average in the middle teens.  These improved numbers along with field observations of the soil composition and our increasing yields with lower additional fertilizer inputs all point to improving conditions for the matter that really matters on our farm.

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