Sustainablog

I just got back from three days at one of my favorite ag industry meetings: The Produce Marketing Association “Fresh Summit.”  To those in the industry this is just known as the PMA.   This is an event where the vast majority of the fresh produce and flower industry gathers to show off their products, their new ideas and all the technologies that help process, sort, package and preserve the freshness of the produce.    There are more than a thousand booths and a great many of them offer samples like the one pictured above.  You get to see new and exotic fruits and vegetables, some of which eventually make it into the mainstream (I’ll talk about some examples in a later post).  

So, basically I juist got to spend three days talking to people about produce, traceability, food safety and sustainability - all the while eating delicious produce samples.  If it didn’t cost $700 to get in I’m sure this event would be over-run.  I think they should have an additional week for consumers at some lower cost (maybe with a lottery for who gets to come).  

Anyway, I was encouraged to find that “sustainability” was a major theme this year - far more than two years ago which was the last time I got to go to the PMA.  I could blog for days about what I saw, but I’ll hit some highlights. 

There was a very cool alternative to the traditional cardboard “flat.” Most fresh produce is shipped in case boxes or in “flats” which are the units that retailers put out on the display if they don’t actually transfer the produce into bulk displays.  ECOPACK has come up with something they call a Green Box which is made of stackable flats or trays made of recyclable or returnable plastic that are 1/2 the weight of the cardboard.  The marketing and traceability information is on small sleeves attached to the ends of the tray. The link I will give you is directed to the produce industry, but you can see it’s sustainability focus.

I talked with some folks from  CSX who are involved in shipments of produce by rail.  They have done a lot of work to understand the carbon footprint of their transport and have monthly contests for their train engineers to see who can achieve the best fuel efficiency.  They are working on ways to make rail a more competitive option with trucking, even for fresh produce, by providing points of freight consolidation.  Especially for or those of you who live in places with that thing called “winter,” this is great for increasing the sustainability of your fresh produce supply.

On the trucking front, there was a company called Universal Container Inc. that has developed a refrigerated container technology for fresh produce shipping (could be on trucks, trains or ships) that uses liquid nitrogen for cooling rather than the standard diesel compressor technology.  It consumes little energy and has no carbon, particulate, NOX emissions or noise in operation.  Its only emission is nitrogen gas which is already ~80% of the atmosphere.  There is obviously energy involved in producing the liquid nitrogen, but that is really largely a co-product from companies that are after other atmospheric gases.  I’d like to see a full-blown LCA (Life Cycle Analysis) on this because I’d bet money that this will come out on top in terms of GHG in addition to the air and noise pollution advantages.

There were also some really cool sustainability things in the packaging area.  I’ll put that in a later post.

Perhaps the best example of sustainability innovation by a produce company came from the largest Onion company in the US, Gills Onions.  They put in an anaerobic digester to deal with the waste from their operations and are now generating enough energy to power 460 homes.  

I was encouraged, because even though I met some folks at the PMA who didn’t even have sustainability on their radar, I met far more produce industry people who were on-board with the importance of this issue.   I’m not at all saying that the sustainability challenge has been fully addressed by the fresh produce industry, but I was very impressed with the momentum I observed.

Your are welcome to comment on this site.  You can also email me at feedback.sdsavage@gmail.com.

All images from me, Steve Savage (Not a great photographer).

Today I picked the grapes from my vineyard.  I got 366 usable pounds from my 25 vines even though I lost at least 100 pounds to birds that somehow penetrated my elaborate net system.  The harvest will still give me between 90 and 115 bottles of what I hope will be decent wine - at least as decent as the ‘06 I’m happily sipping right now.

I used the term “Suburban Farmer” as a shameless lure to get folks to read this blog.  To be honest, I’m not a “Farmer”  at all.   I grow grapes as a hobby, and since I am a self-employed consultant, the time I spend growing these grapes has an “opportunity cost” far greater than what the Syrah I bottle will be worth as a reduction in my substantial wine budget.  I think it is great to garden or do home wine making, and I wish even more people had the opportunity to do it.  It is good for body and soul - better than the money I could have made.  But this is still not farming.  I have too much respect for real farmers to call it that.
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This post is going to be another struggle for balance.  The threat from this particular mycotoxin in the food supply is a so large that it makes the risks that worry most people look tame.  It makes the subject of one of my previous posts about another mycotoxin, vomitoxin, look like a virtual non-issue. Aflatoxin is one of the most potent acute toxins known and one of the most carcinogenic.  Because of this the average international tolerance for aflatoxin B1 in food is 4 parts per billion (PPB).  The average tolerance for food for children is 0.2 PPB and for milk 0.05 PPB (USDA ERS publication source for this data).  These are seriously low numbers.  I want to accurately represent the seriousness of this risk.  

At the same time I also want to accurately represent the extent to which the commercial food supply is now protected from that risk.  The same ERS document above reported US crop losses in 2003 from mycotoxins in corn, wheat and peanuts of $932 million and another $466 million for testing.  That is all for preventing this toxin from getting to us. There is a lot going on in the background that few people recognize.

Folks in the food industry may well ask “why even bring it up!?”  First of all, this is no secret.  My Google Alert for “Aflatoxin” sends me articles nearly every day.  Also I raise this issue to try to “calibrate risk.”  I saw an entry in a comment string on another blog the other day where someone wrote, “I hope this is a move towards chemical-free food.”  I’ll give that person the benefit of the doubt that they know that all food is made of chemicals (proteins, fats, carbs…).  Their concern was about synthetic pesticide residues.  I doubt that they know about “chemicals” like aflatoxin.  They should.  It is thousands of times more toxic than a typical pesticide residue.

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I’ll come back to the Mycotoxin issue soon.  Instead, I’ll talk today about my serious worries about Climate Change.  

People involved in world agriculture have no patience with the supposed “debate” about climate change.  We are already seeing the effects, and the projections for the future are not encouraging.  The most troubling feature of this phenomenon (and one that occurs even if you don’t believe that it is human-driven) is that we are facing increasing variation in climatic events.  The yearly changes in average temperature or even annual rainfall may not be dramatic, but what we are anticipating is that there will be more extreme weather events.  Climate averages are not what matters for crop production - Variation is.  A few days of intense rain or heat at the wrong time can devastate a crop.  A few weeks of drought can do the same.  A single hail or frost event can make all the difference in what a farmer can harvest.  We have always had those risks for farming and only long term data will demonstrate whether there has been an increasing trend as is predicted.  For instance, It isn’t possible yet to say that the current, extended drought in Australia is caused by elevated greenhouse gasses, but some day we will know whether it was by looking back historically.  Of course that will be too late.  Our actions have to come now.  The other huge threat from climate change is that water supplies will be more limiting in many areas that are irrigated today.  Though that area is much smaller than rain-fed areas, it is very important to the food supply.

Some have predicted that “Global warming” and elevated CO2 will boost crop production in certain areas.  There might be some occasions where higher temperatures will enhance some yields in normally cold areas, but if the warmth comes with other extreme weather events, the benefits will be diminished.  It also turns out that plants can’t really take full advantage of high CO2 levels.  Basically,  there is no real “up-side” of climate change for farming.

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The large-scale Organic dairy cooperative, “Organic Valley” has just sunk to a new low in the practice of “I will market against my farmer neighbors by stoking consumer’s fears.” They announced that they have launched an on-line calculator that is supposed to show you how much pesticide and fertilizer use is avoided when you buy their products.  The news release essentially boils down to the message, “buy our products or you will probably die!”  It also essentially accuses the 97.5% of us who don’t buy Organic of destroying the planet.

When talking about pesticides the press report says: “For adults, exposure through diet has been linked to infertility, Parkinson’s, testicular cancer, birth defects and much more. More than one million children in America age five and under ingest at least 15 pesticides daily. Early exposures are suspected in the sharp rise in health problems including autism, obesity, asthma, brain cancer and other childhood cancers.”  This broad-brush assertion is misleading on so many levels that it is hard to know where to start.  I’m not saying that there have never been any health issues with any pesticide anywhere, but we also have sufficient food in part because of pesticides.  Though many people don’t know it, there are pesticides used on organic crops as well.  Actually, the EPA has done a very good job of regulating pesticide use over the years so that people don’t need to be frightened about their food.

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I need to be very careful in what I say about this topic because it would be easy to scare people beyond what is rational.  I could also also easily make enemies in the Wheat industry which is about the last thing I’d like to do.  I’m going to try to hit the right balance, but it is risky.

Mycotoxins

Most people don’t know that Mycotoxins are a very real issue in our food supply.  These are nasty, natural chemicals that are produced by certain fungi that infect crops. This is not something new.  In Medieval times there was a wide-spread neurological disorder called “Ergotism.” It was caused by mycotoxins in the rye crop produced by a disease called “ergot.” The poor people who lived off of rye, rather than wheat, were disproportionately effected.

Mycotoxins are still an issue today.  2009 has been a particularly bad year for a toxin called “vomitoxin” in wheat, barley and pasta wheat.  Its not a secret, but unless you read the farm press or trade news, you would never know.  Sometime do a Google News search for “vomitoxin.”  If there is rain when these grains are flowering, they can become infected with a fungus called Fusarium graminierum. The disease starts by reducing the farmer’s yields, but it can also produce a toxin in the remaining grain called deoxynivalenol (more commonly called DON toxin).  The trade term, “vomitoxin,” comes from the physical response that animals have if they are fed too much of this contaminated grain (which is obviously not pretty).

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Lots of people in America are worried about their food - usually not about having enough food, but mostly about things that might be in their food that could potentially hurt them or their children.  People also worry about the environmental impacts of food production.  At one level I’m glad that people are engaged in this way and I do believe that there are legitimate concerns.   I happen to think that some of the fear about food is misplaced.

I believe that much of this fear stems from a limited understanding of toxicology, molecular genetics, and also what farming is actually about today.  Very few Americans have any real contact with farming.  Frankly, some of this fear is also driven by the activities of businesses and organizations with a vested economic interest in alarming people.

I’ve been working as an agricultural scientist for 32 years.  I’ve had the opportunity to learn about lots of crops grown all over the world.  I’ve been involved with all sorts of different technologies.  I’ve seen huge changes in agriculture over time. So from all of this experience, do I worry about anything to do with food?  Yes, absolutely I do worry! But my list of worries is a little different from the norm

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Dr. Norman Borlaug passed away this weekend at 95.  He left behind an amazing legacy of contribution to humanity.  It is likely that he saved more human lives than any other person in history.  He did it by developing far more productive wheat than had ever been grown.  His “short stature” wheat had shorter, thicker stems so that it could hold bigger heads of grain that would otherwise “lodge” (collapse over on to the ground where it can’t be harvested).  It was also resistant to the devastating wheat disease called “Stem Rust.”  This wheat ended up feeding millions of people around the world, particularly in Pakistan and India in the 1960s.  Borlaug’s breakthrough was a key part of the “Green Revolution” and it did much to address the hunger and poverty issues of the time.  For this, and his life-time of additional work Bourlag recieved the Nobel Peace Prize, the Presidential Medal of Freedom and the Congressional Gold Metal .  Only Martin Luther King, Elie Wiesel, Nelson Mandela and Mother Teresa have received all of these commendations.  He was also awarded the National Medal of Science and a host of other awards from around the world.  There is an excellent article about the life and career of this remarkable man in the Des Moines Register.

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Sean Daily, Green Living Ideas’ Editor-In-Chief, talks about Fair Trade, organically grown Yerba Mate energy drinks with David Karr, Co-Founder of Guayaki.

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There is an old saying in the fresh produce industry: “Produce is purchased based on appearance, not by taste.”  This is unfortunately often true.  People buy their fruit and vegetables based on how fresh and blemish-free they look.  They don’t normally have the chance to do taste comparisons.  The reality is that lots of fruits and vegetables look better than they taste.

Fortunately, there have been some produce improvements that break through this “appearance” paradigm.  I’ll describe just four examples that are favorite of mine and about which I have some background information (don’t worry, no-one is paying me to promote these).

The Golden Pineapple

It used to be that buying a fresh pineapple was a high risk investment.  They were fairly expensive and much of the time they were so acidic that you would burn the roof of your mouth.  The Pineapple Research Institute in Hawaii developed a much sweeter, lower acid hybrid called 73-114, but for years it could never be commercialized because it couldn’t be successfully shipped to the US from either Central America or Hawaii.  Finally, the fruit company, Del Monte and the post-harvest technology company FMC figured out a a way for it to make it to US markets.  They found a particular food-safe wax that changed the gas exchange (CO2, water, oxygen…) such that the fruit could stay alive during shipping.  Del Monte launched this as “Del Monte Gold” in 1997.  Since then many companies have introduced “Golden Pineapples” and pineapple consumption has been rising ever since.

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