Is there a linear relationship between priming effect intensity and the amount of organic matter input?

▶ Straw mineralization was not limited by mineral N availability. ▶ Priming effect (PE) was a saturating function of the amount of straw added. ▶ PE intensity did not increase linearly with increasing the straw additions. ▶ The effect of PE on the amount of soil-C was lower with higher straw inputs.