Arizona republican., 1920-01-23
Great Demand in Valley for Dairy Product

flying bacteria may be chief benefit from sulphur fertilization. Bacterial counts are made from our sulphur and gypsum plats as well as check plats by the bacteriological department, Oregon Agricultural college, and indicate that greater numbers of bacteria are asso- ciated with the larger fields and with the use of superphosphate as we'll as sulphur
 Tn 1912 pr. Reimer, working with acid phospate and calcium sulphate on the Southern oregon Experiment station. found that increase in crop yield se- cured by these fertilizers could be pro- duced by the use of elemental sulphur and was probably due to sulphate con- tained. The writer working independ- ently in Deschutes Valley. Oreg., the same' season found that calcium sul- phate and potassium sulphate and acid phosphate gave substantial increases in yields over untreated plats or plats treated with potassium chloride In the experiments by Reimer and Tartar, elemental sulphur was found to give even more marked increase in crop yield. During the following years more extensive trials have shown an aver age in crease in DeschuteS valley of about one and one-fourth tons an acre from applications of sulphur in su1- phafe. In some experiments gain of two and even three tons more alfalfa has been obtained in one season. Grain crops have shown 20 per cent increase from sulphur fertilization. though this may have been an indirect benefit. Eight pounds flowers of sulphur or about 200 pounds calcium sulphate have been found sufficient. The former benefits crops for at least four years while the latter form acts more promptly. Best results may be expect cd where sulphur is applied.
 Tn southern Oregon increases as high as 800 per cent have been secured by Dr. Reimer. The other fertilizer ele- ments have been eliminated as not giv- ing substantial increases in yields on crops like alfalfa; whereas, all the fer tilizerS containing sulphur have given increas ses. No injurious effect has been noted from heavy applications of sul phur in that section.
 Use of sulphur on different soils and at different rates in variuos sections of Oregon strongly indicates that sul- phur is of value to many soils of the state that lack sufficient of that essen tial element to permit continued farm ing in increased yields. Acid soils in Willamette valley have shown little or no response to sulphur treatment though calcium sulphate is commonly used and is beneficial to 1egumes Use
 
 Tot past the experiment stage and should be used only on a small scale for experimental purposes. Fertile loam at Medford and the Umatilla sand, which latter is low in organic matter, have not responded to sulphur treat ment. Sulphur may eb expected to be profitably used on alfalfa in the arid and semiarid sections of Oregon, espe- ciaIly in connection with irrigation These soils are alkaline and contain relatively large amounts of lime. Sul- phur trials by the writer during the past five years have doubled alfalfa yields in Goose Lake valley, increased the yield by one and one-fourth tons an acre in Deschutes valley, and by two tons an acre in trials in Klamath Basin. Other trials have given very increases in yield in Baker and Grand Ronde valleys. In Colum- bza Basin less benefit has been derived from sulphur trials. This may be due to the low organic content of the sandy soils near the Columbia and the mat ter is under investigat tion-
 It is estimated that 600,00 pounds 1 2f calcium sulphate have been used in !