16.5 Tiny Bytes: Choosing the Right Soil Phosphorus Test: Olsen, Bray 1, and Mehlich-3 Methods Unveiled

Ag Geek Speak

In this episode, we unpack the intricacies of soil test phosphorus methods and reveal why not all tests are created equal. We break down the specifics of the Bray 1, Olsen, and Mehlich-3 methods, explaining how they each cater to different soil conditions. Whether you're dealing with acidic, neutral, or calcareous soils, understanding the right test for your soil type can make a difference in your phosphorus fertilizer plan.
Ever wondered why a single phosphorus test doesn't fit all fields? We highlight the Olsen method's superiority in the northern Great Plains given the region's calcareous soils and weigh the advantages and limitations of the versatile Mehlich-3 method. The episode also delves into the concept of calibration and the essential role of university-led yield trials in developing precise fertilizer guidelines.

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1. Understanding Soil Phosphorus Test Methods (00:00:00)

2. Understanding Soil Phosphorus Sampling Methods (00:05:31)