Show Yield of Alfalfa Crop Increased With Gypsum It has hus been known for several years that hat sulphur Increased the yields ields of alfalfa In certain sections of Oregon jut but until recently practically ully nothing had been ileen reported in this line of experimental experimental ex ex- ex- ex work In the Upper Mis Mis- valley the rhe Iowa station recently reported the he re results of of some sOllie trials with gyp gyp- sum suni 20 per cent of which Is sulphur Gypsum is calcium sulphate composed of calcium sulphur and oxygen plus water vater It was use used as a fertilizer as many as years eals ago In European countries Its experimental use with witla general farm crops in various arIous parts part c cof cof of this country has not nut In indicated the I t necessity for its general use These experiments with alfalfa Indicate a n l I I possIbility of ot using to g gypsum goo good I j It II advantage antage A Averaging all aIr trials ioU pounds per acre of gypsum Increases the tle yield of alfalfa by pounds per acre aCle pounds gave poun pounds s pounds rave gave 1075 poun pounds s an and pounds gave eave 1335 pounds of or alfalfa hay pet pcr acre e Increase o er over the check plots no not treated In n no trial did the gypsum fall fail to show an Increase in yield Th The hl highest hest increase was war pounds and the he lowest poun pounds s of alfalfa per acre The Tue I results with oat oata a and aid ld J were vere more variable than with alfalfa and nd were of such character that n not t nearly as much Importance can he be attach attached to them us as with the Increases from rom alfalfa |