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Hello All. I sorting out with the TA the marking of labs and their return to you. They will be emailed back to you so you can see how you did. take care, Mario
Due to issues with my email server from time to time I just wanted to ask if labs have been sent out yet?
What is the purpose of the priming effect in humus?
This was from the SOM 1 lecture.
Hello Jennifer. There is no purpose to the priming effect. It does have an effect though. An increase in microbial activity with addition of labile material results in release of extracellular enzymes by soil bacteria and fungi. These enzymes are released by microbes to depolymerize the labile carbon. However, the enzymes also encounter humus and work to depolymerize the humus. This is the priming effect, an increase in degradation of stabilized carbon as a result of addition of labile carbon materials to soil. I hope this helps understand the priming effect better. take care, Mario
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