The present qualified work of investigation " Evaluation of dose of charitable microorganisms in culture of Chinese onion (allium fistulosum) var. red chiclayana, under conditions agroclimaticas of the valley of Muds ", had as specific aims: To determine the ideal dose of the charitable microorganisms that presents better results in the production of Chinese onion (allium fistolosum), to conditions agroclimáticas in the valley of Muds, To realize the economic analysis of the treatments. lt was established in the Horticultura! Property in the country " The Pacific Ocean ", In the District and province of Muds, (DBCA) was in use the statistical design of Blocks completely at random, with four blocks, five treatments and with a total of 20 experimental units it were EM'S Dose: To=Testigo; T1=1.00 l/ha T2=1.5 l/ha; T3=2.00 l/ha; T4=2.5 l/ha. The most relevant conclusions were that the treat...