Effective Microorganisms (EM) technology for agriculture has been invented by Prof. Higa Japan in late 1970s, but scientific literature about its effectiveness as organic fertilizer in crop production is very few
I used effective micro organism in field and laboratory tests in Hawaii with US Department of Agriculture Research Center on the ginger root crop. It was able to give high quality and yield of ginger root as a supplement. Our studies showed a key practice beside the use of supplementation was the use of stimulants to break the dormancy displaed in the rihizome seed pieces. The use of hot water and ethylene triggering was highly effective for making the growth early and uniform for commerical production purposes. The elimination of pathogenic root knot nematodes is able to be achieved by hot water temperature which makes it my preferred methodology. In a crop like tomato the colonization of the transplant with mycorrhizae and Trichoderma should be tested out under your conditions. EM can be used as a drench and as a foliar application. EM is a useful treatment but does not cover all the tomato issues and problems it can be a good tool as a biological input.