Food for hecause the 'specials^ are not properly compounded, and second y, 

 ^° ^ because the needed plant food can be thus procured at lower 

 142 cost.'''"" 



The continuous use of muriate of potash may so far 

 deplete the soil of Hme that an occasional application of 

 this material may be required in case of such use. The 

 sulphate of potash may be a safer material to use where a 

 growth of clover is desired than the muriate, and therefore 

 it may often be wise to use the sulphate. The high-grade 

 sulphate should be selected. 



These materials should as a rule be mixed just before 

 use, and applied broadcast (after plowing) and harrowed in 

 just before planting the seed. Where Nitrate of Soda is to 

 be used in quantities in excess of 1^0 pounds per acre, one-half 

 the amount of this salt may be ivithheld until the crop is J or 

 ^ inches high, when it may be evenly scattered near the plants. 

 It is unnecessary to cover this, though it may prove more 

 promptly effective in absence of rain if cultivated in. 



The quantities recommended are in most cases moderate. 

 On soils of good physical character it will often prove profit- 

 able to use about one and one-half times the amounts given. 



SUMMARY OF INCREASED YIELDS. 



From Application of 100 Pounds per Acre of Nitrate of Soda. 



_,. . T^ . , It should be pointed out that in the 

 Rise in Price of , , . ^ • 1 >t- r n ^ 



„ T, J .. recorded experiments with JNitrate of Soda 

 Farm Products. ^^ V-> 1 r 1 t 1 i • 



on Money Crops heretofore published in 



Experiment Station Reports and Bulletins, farm products 



were much low^er in price. The prices of agricultural 



products have risen to a high water mark, and in certain 



cases the advance has been to extreme figures, and all farm 



commodities are now higher than they have been for some 



years. Our statements heretofore published, showing the 



Tw • f u fif profit resulting from the crop increases 



JW.arS[lIl Ol "rOnt 1 1 r 'kt- r r' ^ • r 



^ °. due to the use of JNitrate of Soda, if re- 



Greater. J , . 1 r 



arranged on a basis of present values for 



crops, would show more profit than before. It should also 



* U. S. Department Agricultural, Farmers' Bulletin, 65 and 84 (Experiment Station 

 "W ork, II, page 27 ; VII, page 5). 



