Episode 183: Jim Dunlop’s Strategies to Break the Ammonium Cycle
By John Kempf
PermaNews Brief
Key Takeaways
Jim Dunlop shares innovative strategies for optimizing plant health and crop yields.
- Small sugar additions balance nitrogen effectively
- Boron levels enhance calcium movement in plants
- Pre-mixed nutrients reduce application costs
- Pinion product mitigates powdery mildew risks
- Combining fertigation boosts growth and fruit size
Why It Matters
Understanding plant metabolic health can lead to better crop yields and sustainability in agriculture.
What to Do Next
Listen to the podcast episode to learn practical approaches.
Permaculture Context
What Jim Dunlop's work with AEA signals for permaculture practitioners isn't just a set of agronomic tweaks — it's a deeper validation of something regenerative growers have long suspected: that plant health is fundamentally about metabolic harmony, not input volume. The "ammonium death spiral" he describes is precisely the kind of cascade failure that emerges when we treat soil and plant nutrition as a simple addition problem rather than a dynamic, interconnected system. For someone managing a homestead, a food forest, or a market garden using regenerative principles, the practical takeaway is significant: before reaching for more calcium, more nitrogen, or more of anything, diagnose the underlying bottlenecks — sugar levels, boron availability, pH balance — that determine whether any input actually reaches its destination inside the plant. This kind of precision thinking doesn't require a corporate agronomist; it requires slowing down, learning to read your plants, and understanding that resilience is built through systemic balance. In a world of increasing climate volatility, crops that metabolize efficiently under stress are not a luxury — they are the foundation of a genuinely sustainable food system.
Recommended for: Farmers and agronomists looking to optimize crop health.
Jim Dunlop is a senior agronomist with Advancing Eco Agriculture (AEA) whose journey into agriculture began after serving in the Marine Corps. He used the GI Bill to study biology and chemistry at CSU Stanislaus. While there, he started a CSA farm in the Yosemite foothills, which grew significantly as he collaborated with organic growers. Jim later managed a pasture livestock operation on California's Central Coast and spent a year traveling the country in an RV to visit diverse farms. He eventually settled in Oregon's Columbia Gorge, transitioning from a compost facility to managing orchards for Mike Omeg, where he first discovered AEA. Today, Jim is working to build the AEA business in the Pacific Northwest. He works with conventional and organic growers across a variety of crops, including tree fruit, berries, vegetables, and livestock pasture. In his role, Jim uses his years of experience, sap analysis and AI to pinpoint plant metabolic bottlenecks, helping growers overcome environmental stress and unlock peak crop performance. In this episode, John and Jim discuss: How adding small amounts of sugar to foliar sprays stops a destructive "ammonium death spiral" by balancing nitrogen and raising sap pH. How addressing a plant's foundational sugar and boron levels successfully unlocks calcium movement into new leaves far better than heavy doses of foliar calcium alone. The way using AEA's pre-mixed nutrient blends rather than standard tank mixing helps farmers cut application costs while achieving identical sap movement. The impressive field trial results of AEA's Pinion product in successfully making powdery mildew less active in highly susceptible conventional cherry orchards. The powerful synergy of pairing fertigation and foliar applications together to trigger rapid shoot growth and maximize fruit size. Resources To learn about working with AEA, please visit: https://advancingecoag.com/land/consulting/ To buy and see what Pinion can do for you, ple
Source: advancingecoag.com
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