The present work was driven in the experimental field of the 1 found Aucaloma of the U.N.S.M., county of you Lick Region San Martin (Peru), located geographically to 6° 29' South Latitude and 76° 21' Longitude West to an altitude of 650 msnm. The objective of the experiment was to evaluate the residual effect of 15 dose of the magnesic amendment calcium after of sixteen months of application in the floor, on the yield of the cultivation of bean caupí and to carry out the economic analysis of the best treatments. You uses the statistical design of block complete randomizado (BCR) with tour repetitions and 15 treatments. To check the studied variables, you uses the variance analysis and the test from Duncan to 0,05% of probability. The characteristics of the floor were of sandy texture franc, sour reaction (pH 5.76) content of organic matter (3,22%), with match readiness (12ppm), contai...