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biologicals
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Marvin1982
Posted 1/26/2026 21:24 (#11527696 - in reply to #11526288)
Subject: RE: biologicals


Northeast, Nebraska
easymoney - 1/26/2026 05:57

Downwardspiral - 1/26/2026 04:36

I’m trying to learn more about biologicals and the relationship (if any) to southern rust and tar spot.

Any thoughts?


For rust and biologicals, if you have rust, I would spend time researching the disease and not a product.

If rust is present there is nothing a biological is going to do. If you spray a biological on the leaf it's going to interact with the leaf in the way biology does, colonize and compete for food and space. but it's not a fungicide, it's not interfering with the rust feeding on the leaf.

Rust and the other pathogens being as harmful as they are is the results of farming in a system that doesn't build strong healthy plants. And a product in furrow can't fix a system.

We are back to the same conversation of farming in a more biological system to defend against a biological enemy.

There is absolutely a direct correlation between soil health and plant health. When we are doing several passes of fungicide and insecticide, we need to fix the soil before we can fix the plant.


How does full tillage, front loading fertilizer, using many passes of biocides on fragile soil effect plant health

Take them questions to Google or AI and ask for research papers. Happy reading!



I agree with everything you said except the part where you said you can't stop rust with a biological. In 2024 I stopped rust with our biological and it worked better than fungicide. In 2025 it wasn't successful. The difference? Well 2025 we had really low solar radiation during grain fill. That means less photosynthesis, which means less food for the biology to strive and compete against the rust. In fact it was so low that plants couldn't keep up just in general. Brix were running 6 to 8 at that time instead of over 10 like usual. The reason why southern rust was so bad was because our plants food factory was suffering
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