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Published: May 12, 2018, 1:16 a.m.

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This week, I had the pleasure of interviewing a great farmer and friend of mine, Klaas Martens. Klaas has been farming for more than 30 years and has driven the adoption of sustainable farming practices through his work with numerous national organizations and advisory committees. This episode contains some really great information from Klaas\\u2019s many years of experience developing sustainable farming systems.

In this episode, we talk about the cultural practices that form the basis of weed control, how Klaas thought he had discovered a pathogen that could become a new herbicide, and what it turned out to be, how to see and monitor field variables, crop rotations, and how Klaas has managed the weed control on his farm in upstate New York for the past 30 years.

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This show is brought to you by\\xa0AEA, leaders in regenerative agriculture since 2006.

If you are a large-scale grower looking to increase crop revenue and quality, email\\xa0hello@advancingecoag.com\\xa0or call\\xa0800-495-6603 extension 344\\xa0to be connected with a dedicated AEA crop consultant.

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Episode 8 - Klaas Martens - Highlights

2:50 - Going from conventional farming to completely organic

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3:40 - Having to unlearn some things from a university education

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4:20 - Klaas was noticing that his observations in farming were contradicting his learned models and assumptions

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5:15 - What have been the memorable moments that have lead Klaas to where he is today?

• Learning that cultural practices form the basis of all weed control - chemicals are auxiliary only
• Cultural practices are everything you do in the tending of your fields - what you do to set up the situation the crop is growing in
• What happens if you abandon a field? See the crop rotation in nature

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10:20 - Why was Klaas looking for info in books written before 1945?

• These chemicals were all recent - agriculture had existed long before
• Knowledge was lost when chemicals came long

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12:00 - How does this relate to how Klaas manages crops and weeds on his operation?

• Klaas realized work today will have results later
• Reframing from \\u201cHow do I kill it?\\u201d to \\u201cWhy is this here? What is its function?\\u201d
• Klaas started to study what various weeds and pests actually did in the soil - How do you read what the soil is trying to tell you?

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15:00 - The weed that frustrated Klaas and made it seem organic farming was going to be impossible\\xa0

• Pests were moving in because they were attracted to unhealthy weeds

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18:00 - John\\u2019s experience with Canadian thistles

• There is an organism that lives on the deeper roots of Canadian thistles that it needs to survive - it can only live in anaerobic soil

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21:30 - What advice would Klaas give to growers to emulate some of his success?

• Shifting soil biology leads to shifting weed populations
• Changing the microbiology of the soil

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24:50 - What practices lead Klaas to this result?

• Diverse rotation
• Cover crops - tried not to have soil uncovered over winter
• The importance of the smell of the soil
• We are looking above ground at the plants when we should be looking below ground at the soil

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27:00 - Healthy Soils, Sick Soils by Dr. Franz Sekera and Margareth Sekera

• Sekera took soil and put it under a microscope to see what he could see - discovering the organisms were water living
• Soil breaking down at 70 degrees F

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31:00 - \\xa0Klaas\\u2019s experience with producing dry beans and mustard

• Klaas had a great experience with dry beans, but it dropped very significantly over the years
• Klaas\\u2019s rotation wasn\\u2019t reducing pathogens, it was promoting them
• Some plots had great looking beans, some had beans that died - Some crops made the problem worse, some didn\\u2019t have an effect, and some resulted in very healthy beans.
• One that was very beneficial was yellow mustard

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36:00 - How did Klaas\\u2019s weed profile change after incorporating these changes?

• The soil was trying to say something - that\\u2019s why the mustard kept coming up

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37:40 - What is Klaas\\u2019s crop rotation?

• 20-30 different crops
• Flexible - Klaas wants to respond to what the soil is telling him
• They used a basic rotation, but they worn it out

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41:30 - What are the variables Klaas is monitoring?

• Fields having a certain color point to different problems. Yellow points to sulfur. Blue is often a phosphorus indicator. White can be potassium or calcium.
• These are little data points, still need to do soil testing\\u2019

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45:40 - How has Klaas seen the ecosystem evolve in regards to disease and insect resistance?

• Bugs don\\u2019t hit healthy plants
• Using epsom salts instead of insecticides when plants are low on magnesium
• Insects will avoid plants when all three magnesium, sulfur, molybdenum are adequate supply

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51:00 - Putting on a nutritional application resulting in all insects disappearing.\\xa0

• Plants can launch a defence when they have supplied proper nutrition

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52:30 - Most nutritional imbalances are not a result of deficiencies, they are the results of excess of products that growers apply.

• Overapplication causes imbalances

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53:40 - \\xa0What does Klaas believe to be true about modern agriculture that others do not believe to be true?

• The soil is basically screaming when the farmer is doing something they shouldn\\u2019t be - in the form of weeds, insects, etc. These are the symptoms.
• We aren\\u2019t dealing with the underlying problem
• Too reliant on point and shoot solutions

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56:00 - What are some books or resources that Klaas would recommend?

• Weeds by Walter Conrad Muenscher
• Soil Grass & Cancer by Andre Voisin
• Use what you already know and draw your own conclusions on your farm

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1:00:45 - What is a question Klaas wishes John had asked?

• \\u201cWhere do we find help and guiding in managing our farms?\\u201d
• No one person is the source of knowledge for these topics
• Sharing observations and ideas with other farmers is invaluable - but also to keep yourself and others grounded

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