Know when to sample manure

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When should you sample manure to get the most accurate analysis? Experts at Iowa State University say that samples taken at application, or as close to it as possible, give the best results. These samples are usually well-mixed and representative of manure.

You generally won’t have results in time to make immediate adjustments in your application rate. But, you can apply the results to subsequent applications, including those involving commercial fertilizer. And the results will help create a sampling history for your manure-management plan.


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Marty Zaluski, state veterinarian, Montana Department of Livestock

Question: How do current trichomoniasis regulations affect the movement of cattle across state lines? What can be done to simplify the situation?

Answer: As of July 2014, 26 states have interstate trichomoniasis (trich) regulations, with nearly that many different regulatory requirements. But unlike Baskin-Robbins® ice cream, variations in trich regulations for different states make life more complicated. Areas where states’ regulations differ generally fall into four categories:
a)    Type of test — culture or polymerase chain reaction (PCR)
b)    Duration of test-negative status — usually from 30 to 60 days
c)    Whether pooling of samples is accepted
d)    Age of bulls that can be exempted from testing — usually from 12 to 24 months of age  Read More…

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