A long term trial (Cheng & Yingchun, 2012) over 11 Years conducted at China Agricultural University’s Qu-Zhou experiment station found that the long-term application of EM compost gave the highest values for the measured parameters and the lowest values in the control plot. The application of EM in combination with compost significantly increased wheat straw biomass, grain yields, straw and grain nutrition compared with traditional compost and control treatment. Wheat straw biomass, grain yields, straw and grain nutrition were significantly higher in compost soils than in untreated soil. This study indicated that application of EM significantly increased the efficiency of organic nutrient sources.
Cheng, H., & Yingchun, Q. (2012). Long-term effective microorganisms application promote growth and increase. European Journal of Agronomy.