68 TOMATOES. 



the amount of said increase would amount to $15; the cost of the ap- 

 plication would approximate one-third of said sum. 



"The sweet potato tests demonstrate that muriate of potash can 

 be used with average profit of eight to one." 



GEORGIA, 1890. 

 By R. J. Redding, Director. Bulletin No. 11. 



"The results indicate that mixed minerals with larger rations of 

 nitrogen are productive of the largest yield, and greatest earliness. 



"The effect of nitrogen depends upon the presence of the mineral 

 elements — phosphate and potash." 



MARYLAND, 1889. 

 By W. H. Bishop, Horticulturist. Annual Report. Soil — Clayey- 

 loam mixed with gravel. 



"Thus there are indications from this experiment that the regu- 

 lating ingredients in a fertilizer for tomatoes on this soil are nitrogen 

 and potash, while phosphoric acid has less effect." 

 By H. J. Patterson, Chemist. Annual Report. The effect of fer- 

 tilizers on the composition. 



The results indicate: "That potash has the effect of producing 

 a fruit with more dry substance, accompanied by a slight decrease in 

 the sugar and an increase in the acid. This, when considered with 

 the increase of the yield, is favorable to the use of potash." 



1890. 

 By the Horticulturist and Chemist. Bulletin No. 11. 



"Potash appears to increase the crop more than either of the other 

 elements of plant-food, and nitrogen stood next in this respect. . . . 

 Nitrate of soda and muriate of potash can be recommended as a 

 special fertilizer for the tomato." ^ 



Summary by H. E. Alvord, Director. 



"Potash alone as muriate gave good results; better than some 

 mixtures. 



"Nitrate and muriate of potash can be recommended as special 

 fertilizers for the tomato. 



"The vines and roots of the tomato are very rich in potash." 



1891. 

 Annual Reporl for 1891, page 411. 



"Plots 3 and 9 have equal quantities of phosphoric acid, and the 

 latter has potash also. This addition of potash appears to have in- 

 creased the crop nearly 50 per cent, in 1890, and to have more than 

 doubled it in 1891, " ^ 



