1903.] PUBLIC DOCUMENT — No. 33. 115 



of potash plot, where the planting had been completed, 

 that germination was imperfect ; while on the other plot, 

 where the seed was put in after the shower, the stand of 

 plants was good. When the plants were finally thinned 

 and vacancies filled, it was found necessary to use some 

 plants from the sulfate of potash plot to fill vacancies on 

 the other plot. The summer proved so cool that the crop 

 did not fully mature on either plot, as growth was unusually 

 slow. The yields are shown in the table : — 



Muriate v. High-grade Sxdfate of Potash. — Cabbages, Yields 



per Acre. 



Muriate of 

 Potash. 



High-grade 



Stjltate 

 of Potash. 



Hard heads (miniber), 

 Hard lieads (pounds), 

 Soft heads (pounds), 



2,648 

 26,063 

 22,650 



3,420 

 35,550 

 18,263 



It will be noticed that the total yield of hard heads on 

 the sulfate of potash was materially greater than on the 

 other plot. The merchantable value of the hard heads on 

 the two plots, at l/^ cent per pound was, respectively, for 

 the muriate of potash $130.32, for the sulfate $177.75 ; the 

 sulfate, therefore, gave a crop worth $47.43 per acre more 

 than the muriate. The sulfate in the quantity used cost 

 less than 70 cents per acre more than the muriate. The 

 result of this year is in exact 'agreement with the result 

 obtained in 1899, when, as this year, the season was rather 

 cold and rain}'. When the seasons are hot and relatively 

 dry, the difference between the two salts is comparatively 

 small, and sometimes the muriate gives a slightly better crop 

 than the sulfate. It seems evident, however, that on all 

 except the lightest soils the sulfate is the safer of the two 

 potash salts to employ for the cabbage crop. 



3. Potatoes {Sulfate v. Muriate of Potash) . 

 The potatoes grown in this experiment occupied two 

 plots, 15 and IG. For the two preceding years these plots 

 had been in clover, the clover sod being turned on April 15. 



